#!/usr/local/bin/perl -w
# -*- perl -*-
# Makefile. Generated from Makefile.in by configure.
eval 'case $# in 0) exec /usr/local/bin/perl -S "$0";; *) exec /usr/local/bin/perl -S "$0" "$@";; esac'
if 0;
# automake - create Makefile.in from Makefile.am
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
# Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
# Originally written by David Mackenzie <djm@gnu.ai.mit.edu>.
# Perl reimplementation by Tom Tromey <tromey@redhat.com>.
package Language;
BEGIN
{
my $perllibdir = $ENV{'perllibdir'} || '/share/automake-1.7';
unshift @INC, $perllibdir;
# Override SHELL. This is required on DJGPP so that system() uses
# bash, not COMMAND.COM which doesn't quote arguments properly.
# Other systems aren't expected to use $SHELL when Automake
# runs, but it should be safe to drop the `if DJGPP' guard if
# it turns up other systems need the same thing. After all,
# if SHELL is used, ./configure's SHELL is always better than
# the user's SHELL (which may be something like tcsh).
$ENV{'SHELL'} = '/bin/sh' if exists $ENV{'DJGPP'};
}
use Automake::Struct;
struct (# Short name of the language (c, f77...).
'name' => "\$",
# Nice name of the language (C, Fortran 77...).
'Name' => "\$",
# List of configure variables which must be defined.
'config_vars' => '@',
'ansi' => "\$",
# `pure' is `1' or `'. A `pure' language is one where, if
# all the files in a directory are of that language, then we
# do not require the C compiler or any code to call it.
'pure' => "\$",
'autodep' => "\$",
# Name of the compiling variable (COMPILE).
'compiler' => "\$",
# Content of the compiling variable.
'compile' => "\$",
# Flag to require compilation without linking (-c).
'compile_flag' => "\$",
'extensions' => '@',
# A subroutine to compute a list of possible extensions of
# the product given the input extensions.
# (defaults to a subroutine which returns ('.$(OBJEXT)', '.lo'))
'output_extensions' => "\$",
# A list of flag variables used in 'compile'.
# (defaults to [])
'flags' => "@",
# The file to use when generating rules for this language.
# The default is 'depend2'.
'rule_file' => "\$",
# Name of the linking variable (LINK).
'linker' => "\$",
# Content of the linking variable.
'link' => "\$",
# Name of the linker variable (LD).
'lder' => "\$",
# Content of the linker variable ($(CC)).
'ld' => "\$",
# Flag to specify the output file (-o).
'output_flag' => "\$",
'_finish' => "\$",
# This is a subroutine which is called whenever we finally
# determine the context in which a source file will be
# compiled.
'_target_hook' => "\$");
sub finish ($)
{
my ($self) = @_;
if (defined $self->_finish)
{
&{$self->_finish} ();
}
}
sub target_hook ($$$$)
{
my ($self) = @_;
if (defined $self->_target_hook)
{
&{$self->_target_hook} (@_);
}
}
package Automake;
use strict 'vars', 'subs';
use Automake::General;
use Automake::XFile;
use Automake::Channels;
use File::Basename;
use Carp;
## ----------- ##
## Constants. ##
## ----------- ##
# Parameters set by configure. Not to be changed. NOTE: assign
# VERSION as string so that eg version 0.30 will print correctly.
my $VERSION = '1.7.9';
my $PACKAGE = 'automake';
my $libdir = '/share/automake-1.7';
# Some regular expressions. One reason to put them here is that it
# makes indentation work better in Emacs.
# Writing singled-quoted-$-terminated regexes is a pain because
# perl-mode thinks of $' as the ${'} variable (instead of a $ followed
# by a closing quote. Letting perl-mode think the quote is not closed
# leads to all sort of misindentations. On the other hand, defining
# regexes as double-quoted strings is far less readable. So usually
# we will write:
#
# $REGEX = '^regex_value' . "\$";
my $IGNORE_PATTERN = '^\s*##([^#\n].*)?\n';
my $WHITE_PATTERN = '^\s*' . "\$";
my $COMMENT_PATTERN = '^#';
my $TARGET_PATTERN='[$a-zA-Z_.@%][-.a-zA-Z0-9_(){}/$+@%]*';
# A rule has three parts: a list of targets, a list of dependencies,
# and optionally actions.
my $RULE_PATTERN =
"^($TARGET_PATTERN(?:(?:\\\\\n|\\s)+$TARGET_PATTERN)*) *:([^=].*|)\$";
my $SUFFIX_RULE_PATTERN =
'^(\.[a-zA-Z0-9_(){}$+@]+)(\.[a-zA-Z0-9_(){}$+@]+)' . "\$";
# Only recognize leading spaces, not leading tabs. If we recognize
# leading tabs here then we need to make the reader smarter, because
# otherwise it will think rules like `foo=bar; \' are errors.
my $MACRO_PATTERN = '^[.A-Za-z0-9_@]+' . "\$";
my $ASSIGNMENT_PATTERN = '^ *([^ \t=:+]*)\s*([:+]?)=\s*(.*)' . "\$";
# This pattern recognizes a Gnits version id and sets $1 if the
# release is an alpha release. We also allow a suffix which can be
# used to extend the version number with a "fork" identifier.
my $GNITS_VERSION_PATTERN = '\d+\.\d+([a-z]|\.\d+)?(-[A-Za-z0-9]+)?';
my $IF_PATTERN = '^if\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*)\s*(?:#.*)?' . "\$";
my $ELSE_PATTERN =
'^else(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
my $ENDIF_PATTERN =
'^endif(?:\s+(!?)\s*([A-Za-z][A-Za-z0-9_]*))?\s*(?:#.*)?' . "\$";
my $PATH_PATTERN = '(\w|[/.-])+';
# This will pass through anything not of the prescribed form.
my $INCLUDE_PATTERN = ('^include\s+'
. '((\$\(top_srcdir\)/' . $PATH_PATTERN . ')'
. '|(\$\(srcdir\)/' . $PATH_PATTERN . ')'
. '|([^/\$]' . $PATH_PATTERN . '))\s*(#.*)?' . "\$");
# This handles substitution references like ${foo:.a=.b}.
my $SUBST_REF_PATTERN = "^([^:]*):([^=]*)=(.*)\$";
# Match `-d' as a command-line argument in a string.
my $DASH_D_PATTERN = "(^|\\s)-d(\\s|\$)";
# Directories installed during 'install-exec' phase.
my $EXEC_DIR_PATTERN =
'^(?:bin|sbin|libexec|sysconf|localstate|lib|pkglib|.*exec.*)' . "\$";
# Constants to define the "strictness" level.
use constant FOREIGN => 0;
use constant GNU => 1;
use constant GNITS => 2;
# Values for AC_CANONICAL_*
use constant AC_CANONICAL_HOST => 1;
use constant AC_CANONICAL_SYSTEM => 2;
# Values indicating when something should be cleaned.
use constant MOSTLY_CLEAN => 0;
use constant CLEAN => 1;
use constant DIST_CLEAN => 2;
use constant MAINTAINER_CLEAN => 3;
# Libtool files.
my @libtool_files = qw(ltmain.sh config.guess config.sub);
# ltconfig appears here for compatibility with old versions of libtool.
my @libtool_sometimes = qw(ltconfig ltcf-c.sh ltcf-cxx.sh ltcf-gcj.sh);
# Commonly found files we look for and automatically include in
# DISTFILES.
my @common_files =
(qw(ABOUT-GNU ABOUT-NLS AUTHORS BACKLOG COPYING COPYING.DOC COPYING.LIB
COPYING.LESSER ChangeLog INSTALL NEWS README THANKS TODO acinclude.m4
ansi2knr.1 ansi2knr.c compile config.guess config.rpath config.sub
configure configure.ac configure.in depcomp elisp-comp
install-sh libversion.in mdate-sh missing mkinstalldirs
py-compile texinfo.tex ylwrap),
@libtool_files, @libtool_sometimes);
# Commonly used files we auto-include, but only sometimes.
my @common_sometimes =
qw(aclocal.m4 acconfig.h config.h.top config.h.bot stamp-vti);
# Standard directories from the GNU Coding Standards, and additional
# pkg* directories from Automake. Stored in a hash for fast member check.
my %standard_prefix =
map { $_ => 1 } (qw(bin data exec include info lib libexec lisp
localstate man man1 man2 man3 man4 man5 man6
man7 man8 man9 oldinclude pkgdatadir
pkgincludedir pkglibdir sbin sharedstate
sysconf));
# Declare the macros that define known variables, so we can
# hint the user if she try to use one of these variables.
# Macros accessible via aclocal.
my %am_macro_for_var =
(
ANSI2KNR => 'AM_C_PROTOTYPES',
CCAS => 'AM_PROG_AS',
CCASFLAGS => 'AM_PROG_AS',
EMACS => 'AM_PATH_LISPDIR',
GCJ => 'AM_PROG_GCJ',
LEX => 'AM_PROG_LEX',
LIBTOOL => 'AC_PROG_LIBTOOL',
lispdir => 'AM_PATH_LISPDIR',
pkgpyexecdir => 'AM_PATH_PYTHON',
pkgpythondir => 'AM_PATH_PYTHON',
pyexecdir => 'AM_PATH_PYTHON',
PYTHON => 'AM_PATH_PYTHON',
pythondir => 'AM_PATH_PYTHON',
U => 'AM_C_PROTOTYPES',
);
# Macros shipped with Autoconf.
my %ac_macro_for_var =
(
CC => 'AC_PROG_CC',
CFLAGS => 'AC_PROG_CC',
CXX => 'AC_PROG_CXX',
CXXFLAGS => 'AC_PROG_CXX',
F77 => 'AC_PROG_F77',
F77FLAGS => 'AC_PROG_F77',
RANLIB => 'AC_PROG_RANLIB',
YACC => 'AC_PROG_YACC',
);
# Copyright on generated Makefile.ins.
my $gen_copyright = "\
# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
# Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
";
# These constants are returned by lang_*_rewrite functions.
# LANG_SUBDIR means that the resulting object file should be in a
# subdir if the source file is. In this case the file name cannot
# have `..' components.
use constant LANG_IGNORE => 0;
use constant LANG_PROCESS => 1;
use constant LANG_SUBDIR => 2;
# These are used when keeping track of whether an object can be built
# by two different paths.
use constant COMPILE_LIBTOOL => 1;
use constant COMPILE_ORDINARY => 2;
## ---------------------------------- ##
## Variables related to the options. ##
## ---------------------------------- ##
# TRUE if we should always generate Makefile.in.
my $force_generation = 1;
# Strictness level as set on command line.
my $default_strictness = GNU;
# Name of strictness level, as set on command line.
my $default_strictness_name = 'gnu';
# This is TRUE if automatic dependency generation code should be
# included in generated Makefile.in.
my $cmdline_use_dependencies = 1;
# From the Perl manual.
my $symlink_exists = (eval 'symlink ("", "");', $@ eq '');
# TRUE if missing standard files should be installed.
my $add_missing = 0;
# TRUE if we should copy missing files; otherwise symlink if possible.
my $copy_missing = 0;
# TRUE if we should always update files that we know about.
my $force_missing = 0;
## ---------------------------------------- ##
## Variables filled during files scanning. ##
## ---------------------------------------- ##
# Name of the top autoconf input: `configure.ac' or `configure.in'.
my $configure_ac = '';
# Files found by scanning configure.ac for LIBOBJS.
my %libsources = ();
# Names used in AC_CONFIG_HEADER call.
my @config_headers = ();
# Where AC_CONFIG_HEADER appears.
my $config_header_location;
# Directory where output files go. Actually, output files are
# relative to this directory.
my $output_directory;
# List of Makefile.am's to process, and their corresponding outputs.
my @input_files = ();
my %output_files = ();
# Complete list of Makefile.am's that exist.
my @configure_input_files = ();
# List of files in AC_CONFIG_FILES/AC_OUTPUT without Makefile.am's,
# and their outputs.
my @other_input_files = ();
# Where the last AC_CONFIG_FILES/AC_OUTPUT appears.
my $ac_config_files_location;
# List of directories to search for configure-required files. This
# can be set by AC_CONFIG_AUX_DIR.
my @config_aux_path = qw(. .. ../..);
my $config_aux_dir = '';
my $config_aux_dir_set_in_configure_in = 0;
# Whether AM_GNU_GETTEXT has been seen in configure.ac.
my $seen_gettext = 0;
# Whether AM_GNU_GETTEXT([external]) is used.
my $seen_gettext_external = 0;
# Where AM_GNU_GETTEXT appears.
my $ac_gettext_location;
# TRUE if we've seen AC_CANONICAL_(HOST|SYSTEM).
my $seen_canonical = 0;
my $canonical_location;
# Where AM_MAINTAINER_MODE appears.
my $seen_maint_mode;
# Actual version we've seen.
my $package_version = '';
# Where version is defined.
my $package_version_location;
# TRUE if we've seen AC_ENABLE_MULTILIB.
my $seen_multilib = 0;
# TRUE if we've seen AM_PROG_CC_C_O
my $seen_cc_c_o = 0;
# Where AM_INIT_AUTOMAKE is called;
my $seen_init_automake = 0;
# TRUE if we've seen AM_AUTOMAKE_VERSION.
my $seen_automake_version = 0;
# Hash table of discovered configure substitutions. Keys are names,
# values are `FILE:LINE' strings which are used by error message
# generation.
my %configure_vars = ();
# This is used to keep track of which variable definitions we are
# scanning. It is only used in certain limited ways, but it has to be
# global. It is declared just for documentation purposes.
my %vars_scanned = ();
# TRUE if --cygnus seen.
my $cygnus_mode = 0;
# Hash table of AM_CONDITIONAL variables seen in configure.
my %configure_cond = ();
# This maps extensions onto language names.
my %extension_map = ();
# List of the DIST_COMMON files we discovered while reading
# configure.in
my $configure_dist_common = '';
# This maps languages names onto objects.
my %languages = ();
# List of targets we must always output.
# FIXME: Complete, and remove falsely required targets.
my %required_targets =
(
'all' => 1,
'dvi' => 1,
'pdf' => 1,
'ps' => 1,
'info' => 1,
'install-info' => 1,
'install' => 1,
'install-data' => 1,
'install-exec' => 1,
'uninstall' => 1,
# FIXME: Not required, temporary hacks.
# Well, actually they are sort of required: the -recursive
# targets will run them anyway...
'dvi-am' => 1,
'pdf-am' => 1,
'ps-am' => 1,
'info-am' => 1,
'install-data-am' => 1,
'install-exec-am' => 1,
'installcheck-am' => 1,
'uninstall-am' => 1,
'install-man' => 1,
);
# This is set to 1 when Automake needs to be run again.
# (For instance, this happens when an auxiliary file such as
# depcomp is added after the toplevel Makefile.in -- which
# should distribute depcomp -- has been generated.)
my $automake_needs_to_reprocess_all_files = 0;
# Options set via AM_INIT_AUTOMAKE.
my $global_options = '';
# Same as $suffix_rules (declared below), but records only the
# default rules supplied by the languages Automake supports.
my $suffix_rules_default;
# If a file name appears as a key in this hash, then it has already
# been checked for. This variable is local to the "require file"
# functions.
my %require_file_found = ();
################################################################
## ------------------------------------------ ##
## Variables reset by &initialize_per_input. ##
## ------------------------------------------ ##
# Basename and relative dir of the input file.
my $am_file_name;
my $am_relative_dir;
# Same but wrt Makefile.in.
my $in_file_name;
my $relative_dir;
# These two variables are used when generating each Makefile.in.
# They hold the Makefile.in until it is ready to be printed.
my $output_rules;
my $output_vars;
my $output_trailer;
my $output_all;
my $output_header;
# Suffixes found during a run.
my @suffixes;
# Handling the variables.
#
# For a $VAR:
# - $var_value{$VAR}{$COND} is its value associated to $COND,
# - $var_location{$VAR}{$COND} is where it was defined,
# - $var_comment{$VAR}{$COND} are the comments associated to it.
# - $var_type{$VAR}{$COND} is how it has been defined (`', `+', or `:'),
# - $var_owner{$VAR}{$COND} tells who owns the variable (VAR_AUTOMAKE,
# VAR_CONFIGURE, or VAR_MAKEFILE).
my %var_value;
my %var_location;
my %var_comment;
my %var_type;
my %var_owner;
# Possible values for var_owner. Defined so that the owner of
# a variable can only be increased (e.g Automake should not
# override a configure or Makefile variable).
use constant VAR_AUTOMAKE => 0; # Variable defined by Automake.
use constant VAR_CONFIGURE => 1;# Variable defined in configure.ac.
use constant VAR_MAKEFILE => 2; # Variable defined in Makefile.am.
# This holds a 1 if a particular variable was examined.
my %content_seen;
# This holds the names which are targets. These also appear in
# %contents. $targets{TARGET}{COND} is the location of the definition
# of TARGET for condition COND. TARGETs should not include
# a trailing $(EXEEXT), we record this in %target_name.
my %targets;
# $target_source{TARGET}{COND} is the filename where TARGET
# were defined for condition COND. Note this must be a
# filename, *without* any line number.
my %target_source;
# $target_name{TARGET}{COND} is the real name of TARGET (in condition COND).
# The real name is often TARGET or TARGET$(EXEEXT), and TARGET never
# contain $(EXEEXT)
my %target_name;
# $target_owner{TARGET}{COND} the owner of TARGET in condition COND.
my %target_owner;
use constant TARGET_AUTOMAKE => 0; # Target defined by Automake.
use constant TARGET_USER => 1; # Target defined in the user's Makefile.am.
# This is the conditional stack.
my @cond_stack;
# This holds the set of included files.
my @include_stack;
# This holds a list of directories which we must create at `dist'
# time. This is used in some strange scenarios involving weird
# AC_OUTPUT commands.
my %dist_dirs;
# List of dependencies for the obvious targets.
my @all;
my @check;
my @check_tests;
# Holds the dependencies of targets which dependencies are factored.
# Typically, `.PHONY' will appear in plenty of *.am files, but must
# be output once. Arguably all pure dependencies could be subject
# to this factorization, but it is not unpleasant to have paragraphs
# in Makefile: keeping related stuff altogether.
my %dependencies;
# Holds the factored actions. Tied to %DEPENDENCIES, i.e., filled
# only when keys exists in %DEPENDENCIES.
my %actions;
# Keys in this hash table are files to delete. The associated
# value tells when this should happen (MOSTLY_CLEAN, DIST_CLEAN, etc.)
my %clean_files;
# Keys in this hash table are object files or other files in
# subdirectories which need to be removed. This only holds files
# which are created by compilations. The value in the hash indicates
# when the file should be removed.
my %compile_clean_files;
# Keys in this hash table are directories where we expect to build a
# libtool object. We use this information to decide what directories
# to delete.
my %libtool_clean_directories;
# Value of `$(SOURCES)', used by tags.am.
my @sources;
# Sources which go in the distribution.
my @dist_sources;
# This hash maps object file names onto their corresponding source
# file names. This is used to ensure that each object is created
# by a single source file.
my %object_map;
# This hash maps object file names onto an integer value representing
# whether this object has been built via ordinary compilation or
# libtool compilation (the COMPILE_* constants).
my %object_compilation_map;
# This keeps track of the directories for which we've already
# created dirstamp code.
my %directory_map;
# All .P files.
my %dep_files;
# Strictness levels.
my $strictness;
my $strictness_name;
# Options from AUTOMAKE_OPTIONS.
my %options;
# Whether or not dependencies are handled. Can be further changed
# in handle_options.
my $use_dependencies;
# This is a list of all targets to run during "make dist".
my @dist_targets;
# Keys in this hash are the basenames of files which must depend on
# ansi2knr. Values are either the empty string, or the directory in
# which the ANSI source file appears; the directory must have a
# trailing `/'.
my %de_ansi_files;
# This maps the source extension for all suffix rule seen to
# a \hash whose keys are the possible output extensions.
#
# Note that this is transitively closed by construction:
# if we have
# exists $suffix_rules{$ext1}{$ext2}
# && exists $suffix_rules{$ext2}{$ext3}
# then we also have
# exists $suffix_rules{$ext1}{$ext3}
#
# So it's easy to check whether '.foo' can be transformed to '.$(OBJEXT)'
# by checking whether $suffix_rules{'.foo'}{'.$(OBJEXT)'} exist. This
# will work even if transforming '.foo' to '.$(OBJEXT)' involves a chain
# of several suffix rules.
#
# The value of `$suffix_rules{$ext1}{$ext2}' is the a pair
# `[ $next_sfx, $dist ]' where `$next_sfx' is target suffix
# for the next rule to use to reach '$ext2', and `$dist' the
# distance to `$ext2'.
my $suffix_rules;
# This is the name of the redirect `all' target to use.
my $all_target;
# This keeps track of which extensions we've seen (that we care
# about).
my %extension_seen;
# This is random scratch space for the language finish functions.
# Don't randomly overwrite it; examine other uses of keys first.
my %language_scratch;
# We keep track of which objects need special (per-executable)
# handling on a per-language basis.
my %lang_specific_files;
# This is set when `handle_dist' has finished. Once this happens,
# we should no longer push on dist_common.
my $handle_dist_run;
# Used to store a set of linkers needed to generate the sources currently
# under consideration.
my %linkers_used;
# True if we need `LINK' defined. This is a hack.
my $need_link;
# This is the list of such variables to output.
# FIXME: Might be useless actually.
my @var_list;
# Was get_object_extension run?
# FIXME: This is a hack. a better switch should be found.
my $get_object_extension_was_run;
# Contains a stack of `from' parts of variable substitutions currently in
# force.
my @substfroms;
# Contains a stack of `to' parts of variable substitutions currently in
# force.
my @substtos;
# This keeps track of all variables defined by subobjname.
# The value stored is the variable names.
# The key has the form "(COND1)VAL1(COND2)VAL2..." where VAL1 and VAL2
# are the values of the variable for condition COND1 and COND2.
my %subobjvar = ();
# This hash records helper variables used to implement '+=' in conditionals.
# Keys have the form "VAR:CONDITIONS". The value associated to a key is
# the named of the helper variable used to append to VAR in CONDITIONS.
my %appendvar = ();
## --------------------------------- ##
## Forward subroutine declarations. ##
## --------------------------------- ##
sub register_language (%);
sub file_contents_internal ($$%);
sub define_objects_from_sources ($$$$$$$);
# &initialize_per_input ()
# ------------------------
# (Re)-Initialize per-Makefile.am variables.
sub initialize_per_input ()
{
reset_local_duplicates ();
$am_file_name = '';
$am_relative_dir = '';
$in_file_name = '';
$relative_dir = '';
$output_rules = '';
$output_vars = '';
$output_trailer = '';
$output_all = '';
$output_header = '';
@suffixes = ();
%var_value = ();
%var_location = ();
%var_comment = ();
%var_type = ();
%var_owner = ();
%content_seen = ();
%targets = ();
%target_source = ();
%target_name = ();
%target_owner = ();
@cond_stack = ();
@include_stack = ();
%dist_dirs = ();
@all = ();
@check = ();
@check_tests = ();
%dependencies =
(
# Texinfoing.
'dvi' => [],
'dvi-am' => [],
'pdf' => [],
'pdf-am' => [],
'ps' => [],
'ps-am' => [],
'info' => [],
'info-am' => [],
# Installing/uninstalling.
'install-data-am' => [],
'install-exec-am' => [],
'uninstall-am' => [],
'install-man' => [],
'uninstall-man' => [],
'install-info' => [],
'install-info-am' => [],
'uninstall-info' => [],
'installcheck-am' => [],
# Cleaning.
'clean-am' => [],
'mostlyclean-am' => [],
'maintainer-clean-am' => [],
'distclean-am' => [],
'clean' => [],
'mostlyclean' => [],
'maintainer-clean' => [],
'distclean' => [],
# Tarballing.
'dist-all' => [],
# Phoning.
'.PHONY' => []
);
%actions = ();
%clean_files = ();
@sources = ();
@dist_sources = ();
%object_map = ();
%object_compilation_map = ();
%directory_map = ();
%dep_files = ();
$strictness = $default_strictness;
$strictness_name = $default_strictness_name;
%options = ();
$use_dependencies = $cmdline_use_dependencies;
@dist_targets = ();
%de_ansi_files = ();
# The first time we initialize the variables,
# we save the value of $suffix_rules.
if (defined $suffix_rules_default)
{
$suffix_rules = $suffix_rules_default;
}
else
{
$suffix_rules_default = $suffix_rules;
}
$all_target = '';
%extension_seen = ();
%language_scratch = ();
%lang_specific_files = ();
$handle_dist_run = 0;
$need_link = 0;
@var_list = ();
$get_object_extension_was_run = 0;
%compile_clean_files = ();
# We always include `.'. This isn't strictly correct.
%libtool_clean_directories = ('.' => 1);
%subobjvar = ();
%appendvar = ();
}
################################################################
# Initialize our list of error/warning channels.
# Do not forget to update &usage and the manual
# if you add or change a warning channel.
# Fatal errors.
register_channel 'fatal', type => 'fatal';
# Common errors.
register_channel 'error', type => 'error';
# Errors related to GNU Standards.
register_channel 'error-gnu', type => 'error';
# Errors related to GNU Standards that should be warnings in `foreign' mode.
register_channel 'error-gnu/warn', type => 'error';
# Errors related to GNITS Standards (silent by default).
register_channel 'error-gnits', type => 'error', silent => 1;
# Internal errors.
register_channel 'automake', type => 'fatal', backtrace => 1,
header => ("####################\n" .
"## Internal Error ##\n" .
"####################\n"),
footer => "\nPlease contact <bug-automake\@gnu.org>.";
# Warnings related to GNU Coding Standards.
register_channel 'gnu', type => 'warning';
# Warnings about obsolete features (silent by default).
register_channel 'obsolete', type => 'warning', silent => 1;
# Warnings about non-portable constructs.
register_channel 'portability', type => 'warning', silent => 1;
# Weird syntax, unused variables, typos...
register_channel 'syntax', type => 'warning';
# Warnings about unsupported (or mis-supported) features.
register_channel 'unsupported', type => 'warning';
# For &verb.
register_channel 'verb', type => 'debug', silent => 1;
# Informative messages.
register_channel 'note', type => 'debug', silent => 0;
# Initialize our list of languages that are internally supported.
# C.
register_language ('name' => 'c',
'Name' => 'C',
'config_vars' => ['CC'],
'ansi' => 1,
'autodep' => '',
'flags' => ['CFLAGS', 'CPPFLAGS'],
'compiler' => 'COMPILE',
'compile' => '$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)',
'lder' => 'CCLD',
'ld' => '$(CC)',
'linker' => 'LINK',
'link' => '$(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
'compile_flag' => '-c',
'extensions' => ['.c'],
'_finish' => \&lang_c_finish);
# C++.
register_language ('name' => 'cxx',
'Name' => 'C++',
'config_vars' => ['CXX'],
'linker' => 'CXXLINK',
'link' => '$(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
'autodep' => 'CXX',
'flags' => ['CXXFLAGS', 'CPPFLAGS'],
'compile' => '$(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)',
'compiler' => 'CXXCOMPILE',
'compile_flag' => '-c',
'output_flag' => '-o',
'lder' => 'CXXLD',
'ld' => '$(CXX)',
'pure' => 1,
'extensions' => ['.c++', '.cc', '.cpp', '.cxx', '.C']);
# Objective C.
register_language ('name' => 'objc',
'Name' => 'Objective C',
'config_vars' => ['OBJC'],
'linker' => 'OBJCLINK',,
'link' => '$(OBJCLD) $(AM_OBJCFLAGS) $(OBJCFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
'autodep' => 'OBJC',
'flags' => ['OBJCFLAGS', 'CPPFLAGS'],
'compile' => '$(OBJC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_OBJCFLAGS) $(OBJCFLAGS)',
'compiler' => 'OBJCCOMPILE',
'compile_flag' => '-c',
'output_flag' => '-o',
'lder' => 'OBJCLD',
'ld' => '$(OBJC)',
'pure' => 1,
'extensions' => ['.m']);
# Headers.
register_language ('name' => 'header',
'Name' => 'Header',
'extensions' => ['.h', '.H', '.hxx', '.h++', '.hh',
'.hpp', '.inc'],
# No output.
'output_extensions' => sub { return () },
# Nothing to do.
'_finish' => sub { });
# Yacc (C & C++).
register_language ('name' => 'yacc',
'Name' => 'Yacc',
'config_vars' => ['YACC'],
'flags' => ['YFLAGS'],
'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
'compiler' => 'YACCCOMPILE',
'extensions' => ['.y'],
'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
return ($ext,) },
'rule_file' => 'yacc',
'_finish' => \&lang_yacc_finish,
'_target_hook' => \&lang_yacc_target_hook);
register_language ('name' => 'yaccxx',
'Name' => 'Yacc (C++)',
'config_vars' => ['YACC'],
'rule_file' => 'yacc',
'flags' => ['YFLAGS'],
'compiler' => 'YACCCOMPILE',
'compile' => '$(YACC) $(YFLAGS) $(AM_YFLAGS)',
'extensions' => ['.y++', '.yy', '.yxx', '.ypp'],
'output_extensions' => sub { (my $ext = $_[0]) =~ tr/y/c/;
return ($ext,) },
'_finish' => \&lang_yacc_finish,
'_target_hook' => \&lang_yacc_target_hook);
# Lex (C & C++).
register_language ('name' => 'lex',
'Name' => 'Lex',
'config_vars' => ['LEX'],
'rule_file' => 'lex',
'flags' => ['LFLAGS'],
'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
'compiler' => 'LEXCOMPILE',
'extensions' => ['.l'],
'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
return ($ext,) },
'_finish' => \&lang_lex_finish,
'_target_hook' => \&lang_lex_target_hook);
register_language ('name' => 'lexxx',
'Name' => 'Lex (C++)',
'config_vars' => ['LEX'],
'rule_file' => 'lex',
'flags' => ['LFLAGS'],
'compile' => '$(LEX) $(LFLAGS) $(AM_LFLAGS)',
'compiler' => 'LEXCOMPILE',
'extensions' => ['.l++', '.ll', '.lxx', '.lpp'],
'output_extensions' => sub { (my $ext = $_[0]) =~ tr/l/c/;
return ($ext,) },
'_finish' => \&lang_lex_finish,
'_target_hook' => \&lang_lex_target_hook);
# Assembler.
register_language ('name' => 'asm',
'Name' => 'Assembler',
'config_vars' => ['CCAS', 'CCASFLAGS'],
'flags' => ['CCASFLAGS'],
# Users can set AM_ASFLAGS to includes DEFS, INCLUDES,
# or anything else required. They can also set AS.
'compile' => '$(CCAS) $(AM_CCASFLAGS) $(CCASFLAGS)',
'compiler' => 'CCASCOMPILE',
'compile_flag' => '-c',
'extensions' => ['.s', '.S'],
# With assembly we still use the C linker.
'_finish' => \&lang_c_finish);
# Fortran 77
register_language ('name' => 'f77',
'Name' => 'Fortran 77',
'linker' => 'F77LINK',
'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
'flags' => ['FFLAGS'],
'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS)',
'compiler' => 'F77COMPILE',
'compile_flag' => '-c',
'output_flag' => '-o',
'lder' => 'F77LD',
'ld' => '$(F77)',
'pure' => 1,
'extensions' => ['.f', '.for', '.f90']);
# Preprocessed Fortran 77
#
# The current support for preprocessing Fortran 77 just involves
# passing `$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS)
# $(CPPFLAGS)' as additional flags to the Fortran 77 compiler, since
# this is how GNU Make does it; see the `GNU Make Manual, Edition 0.51
# for `make' Version 3.76 Beta' (specifically, from info file
# `(make)Catalogue of Rules').
#
# A better approach would be to write an Autoconf test
# (i.e. AC_PROG_FPP) for a Fortran 77 preprocessor, because not all
# Fortran 77 compilers know how to do preprocessing. The Autoconf
# macro AC_PROG_FPP should test the Fortran 77 compiler first for
# preprocessing capabilities, and then fall back on cpp (if cpp were
# available).
register_language ('name' => 'ppf77',
'Name' => 'Preprocessed Fortran 77',
'config_vars' => ['F77'],
'linker' => 'F77LINK',
'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
'lder' => 'F77LD',
'ld' => '$(F77)',
'flags' => ['FFLAGS', 'CPPFLAGS'],
'compiler' => 'PPF77COMPILE',
'compile' => '$(F77) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_FFLAGS) $(FFLAGS)',
'compile_flag' => '-c',
'output_flag' => '-o',
'pure' => 1,
'extensions' => ['.F']);
# Ratfor.
register_language ('name' => 'ratfor',
'Name' => 'Ratfor',
'config_vars' => ['F77'],
'linker' => 'F77LINK',
'link' => '$(F77LD) $(AM_FFLAGS) $(FFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
'lder' => 'F77LD',
'ld' => '$(F77)',
'flags' => ['RFLAGS', 'FFLAGS'],
# FIXME also FFLAGS.
'compile' => '$(F77) $(AM_FFLAGS) $(FFLAGS) $(AM_RFLAGS) $(RFLAGS)',
'compiler' => 'RCOMPILE',
'compile_flag' => '-c',
'output_flag' => '-o',
'pure' => 1,
'extensions' => ['.r']);
# Java via gcj.
register_language ('name' => 'java',
'Name' => 'Java',
'config_vars' => ['GCJ'],
'linker' => 'GCJLINK',
'link' => '$(GCJLD) $(AM_GCJFLAGS) $(GCJFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@',
'autodep' => 'GCJ',
'flags' => ['GCJFLAGS'],
'compile' => '$(GCJ) $(AM_GCJFLAGS) $(GCJFLAGS)',
'compiler' => 'GCJCOMPILE',
'compile_flag' => '-c',
'output_flag' => '-o',
'lder' => 'GCJLD',
'ld' => '$(GCJ)',
'pure' => 1,
'extensions' => ['.java', '.class', '.zip', '.jar']);
################################################################
# Parse the WARNINGS environment variable.
&parse_WARNINGS;
# Parse command line.
&parse_arguments;
# Do configure.ac scan only once.
&scan_autoconf_files;
&fatal ("no `Makefile.am' found or specified\n")
if ! @input_files;
my $automake_has_run = 0;
do
{
if ($automake_has_run)
{
&verb ('processing Makefiles another time to fix them up.');
&prog_error ('running more than two times should never be needed.')
if $automake_has_run >= 2;
}
$automake_needs_to_reprocess_all_files = 0;
# Now do all the work on each file.
# This guy must be local otherwise it's private to the loop.
use vars '$am_file';
local $am_file;
foreach $am_file (@input_files)
{
if (! -f ($am_file . '.am'))
{
&error ("`$am_file.am' does not exist");
}
else
{
&generate_makefile ($output_files{$am_file}, $am_file);
}
}
++$automake_has_run;
}
while ($automake_needs_to_reprocess_all_files);
exit $exit_code;
################################################################
# Error reporting functions.
# prog_error ($MESSAGE, [%OPTIONS])
# -------------------------------
# Signal a programming error, display $MESSAGE, and exit 1.
sub prog_error ($;%)
{
my ($msg, %opts) = @_;
msg 'automake', '', $msg, %opts;
}
# error ($WHERE, $MESSAGE, [%OPTIONS])
# error ($MESSAGE)
# ------------------------------------
# Uncategorized errors.
sub error ($;$%)
{
my ($where, $msg, %opts) = @_;
msg ('error', $where, $msg, %opts);
}
# fatal ($WHERE, $MESSAGE, [%OPTIONS])
# fatal ($MESSAGE)
# ----------------------------------
# Fatal errors.
sub fatal ($;$%)
{
my ($where, $msg, %opts) = @_;
msg ('fatal', $where, $msg, %opts);
}
# err_var ($VARNAME, $MESSAGE, [%OPTIONS])
# ----------------------------------------
# Uncategorized errors about variables.
sub err_var ($$;%)
{
msg_var ('error', @_);
}
# err_target ($TARGETNAME, $MESSAGE, [%OPTIONS])
# ----------------------------------------------
# Uncategorized errors about targets.
sub err_target ($$;%)
{
msg_target ('error', @_);
}
# err_cond_target ($COND, $TARGETNAME, $MESSAGE, [%OPTIONS])
# ----------------------------------------------------------
# Uncategorized errors about conditional targets.
sub err_cond_target ($$$;%)
{
msg_cond_target ('error', @_);
}
# err_am ($MESSAGE, [%OPTIONS])
# -----------------------------
# Uncategorized errors about the current Makefile.am.
sub err_am ($;%)
{
msg_am ('error', @_);
}
# err_ac ($MESSAGE, [%OPTIONS])
# -----------------------------
# Uncategorized errors about configure.ac.
sub err_ac ($;%)
{
msg_ac ('error', @_);
}
# msg_cond_var ($CHANNEL, $COND, $VARNAME, $MESSAGE, [%OPTIONS])
# --------------------------------------------------------------
# Messages about conditional variable.
sub msg_cond_var ($$$$;%)
{
my ($channel, $cond, $var, $msg, %opts) = @_;
msg $channel, $var_location{$var}{$cond}, $msg, %opts;
}
# msg_var ($CHANNEL, $VARNAME, $MESSAGE, [%OPTIONS])
# --------------------------------------------------
# Messages about variables.
sub msg_var ($$$;%)
{
my ($channel, $var, $msg, %opts) = @_;
# Don't know which condition is concerned. Pick any.
my $cond = (keys %{$var_value{$var}})[0];
msg_cond_var $channel, $cond, $var, $msg, %opts;
}
# msg_cond_target ($CHANNEL, $COND, $TARGETNAME, $MESSAGE, [%OPTIONS])
# --------------------------------------------------------------------
# Messages about conditional targets.
sub msg_cond_target ($$$$;%)
{
my ($channel, $cond, $target, $msg, %opts) = @_;
msg $channel, $targets{$target}{$cond}, $msg, %opts;
}
# msg_target ($CHANNEL, $TARGETNAME, $MESSAGE, [%OPTIONS])
# --------------------------------------------------------
# Messages about targets.
sub msg_target ($$$;%)
{
my ($channel, $target, $msg, %opts) = @_;
# Don't know which condition is concerned. Pick any.
my $cond = (keys %{$targets{$target}})[0];
msg_cond_target ($channel, $cond, $target, $msg, %opts);
}
# msg_am ($CHANNEL, $MESSAGE, [%OPTIONS])
# ---------------------------------------
# Messages about about the current Makefile.am.
sub msg_am ($$;%)
{
my ($channel, $msg, %opts) = @_;
msg $channel, "${am_file}.am", $msg, %opts;
}
# msg_ac ($CHANNEL, $MESSAGE, [%OPTIONS])
# ---------------------------------------
# Messages about about configure.ac.
sub msg_ac ($$;%)
{
my ($channel, $msg, %opts) = @_;
msg $channel, $configure_ac, $msg, %opts;
}
# $BOOL
# reject_var ($VAR, $ERROR_MSG)
# -----------------------------
sub reject_var ($$)
{
my ($var, $msg) = @_;
if (variable_defined ($var))
{
err_var $var, $msg;
return 1;
}
return 0;
}
# $BOOL
# reject_target ($VAR, $ERROR_MSG)
# --------------------------------
sub reject_target ($$)
{
my ($target, $msg) = @_;
if (target_defined ($target))
{
err_target $target, $msg;
return 1;
}
return 0;
}
# verb ($MESSAGE, [%OPTIONS])
# ---------------------------
sub verb ($;%)
{
my ($msg, %opts) = @_;
msg 'verb', '', $msg, %opts;
}
################################################################
# subst ($TEXT)
# -------------
# Return a configure-style substitution using the indicated text.
# We do this to avoid having the substitutions directly in automake.in;
# when we do that they are sometimes removed and this causes confusion
# and bugs.
sub subst ($)
{
my ($text) = @_;
return '@' . $text . '@';
}
################################################################
# $BACKPATH
# &backname ($REL-DIR)
# --------------------
# If I `cd $REL-DIR', then to come back, I should `cd $BACKPATH'.
# For instance `src/foo' => `../..'.
# Works with non strictly increasing paths, i.e., `src/../lib' => `..'.
sub backname ($)
{
my ($file) = @_;
my @res;
foreach (split (/\//, $file))
{
next if $_ eq '.' || $_ eq '';
if ($_ eq '..')
{
pop @res;
}
else
{
push (@res, '..');
}
}
return join ('/', @res) || '.';
}
################################################################
# Pattern that matches all know input extensions (i.e. extensions used
# by the languages supported by Automake). Using this pattern
# (instead of `\..*$') to match extensions allows Automake to support
# dot-less extensions.
my $KNOWN_EXTENSIONS_PATTERN = "";
my @known_extensions_list = ();
# accept_extensions (@EXTS)
# -------------------------
# Update $KNOWN_EXTENSIONS_PATTERN to recognize the extensions
# listed @EXTS. Extensions should contain a dot if needed.
sub accept_extensions (@)
{
push @known_extensions_list, @_;
$KNOWN_EXTENSIONS_PATTERN =
'(?:' . join ('|', map (quotemeta, @known_extensions_list)) . ')';
}
# var_SUFFIXES_trigger ($TYPE, $VALUE)
# ------------------------------------
# This is called automagically by macro_define() when SUFFIXES
# is defined ($TYPE eq '') or appended ($TYPE eq '+').
# The work here needs to be performed as a side-effect of the
# macro_define() call because SUFFIXES definitions impact
# on $KNOWN_EXTENSIONS_PATTERN, and $KNOWN_EXTENSIONS_PATTERN
# are used when parsing the input am file.
sub var_SUFFIXES_trigger ($$)
{
my ($type, $value) = @_;
accept_extensions (split (' ', $value));
}
################################################################
# switch_warning ($CATEGORY)
# --------------------------
# If $CATEGORY is mumble, turn on the mumble channel.
# If it's no-mumble, turn mumble off.
# Alse handle `all' and `none' for completeness.
sub switch_warning ($)
{
my ($cat) = @_;
my $has_no = 0;
if ($cat =~ /^no-(.*)$/)
{
$cat = $1;
$has_no = 1;
}
if ($cat eq 'all')
{
setup_channel_type 'warning', silent => $has_no;
}
elsif ($cat eq 'none')
{
setup_channel_type 'warning', silent => ! $has_no;
}
elsif ($cat eq 'error')
{
$warnings_are_errors = ! $has_no;
# Set exit code if Perl warns about something
# (like uninitialized variables).
$SIG{"__WARN__"} =
$has_no ? 'DEFAULT' : sub { print STDERR @_; $exit_code = 1; };
}
elsif (channel_type ($cat) eq 'warning')
{
setup_channel $cat, silent => $has_no;
}
else
{
return 1;
}
return 0;
}
# parse_WARNINGS
# --------------
# Honor the WARNINGS environment variable.
sub parse_WARNINGS ($$)
{
if (exists $ENV{'WARNINGS'})
{
# Ignore unknown categories. This is required because WARNINGS
# should be honored by many tools.
switch_warning $_ foreach (split (',', $ENV{'WARNINGS'}));
}
}
# parse_warning ($OPTION, $ARGUMENT)
# ----------------------------------
# Parse the argument of --warning=CATEGORY or -WCATEGORY.
sub parse_warnings ($$)
{
my ($opt, $categories) = @_;
foreach my $cat (split (',', $categories))
{
msg 'unsupported', "unknown warning category `$cat'"
if switch_warning $cat;
}
}
# Parse command line.
sub parse_arguments ()
{
# Start off as gnu.
&set_strictness ('gnu');
my %options =
(
'libdir:s' => \$libdir,
'gnu' => sub { &set_strictness ('gnu'); },
'gnits' => sub { &set_strictness ('gnits'); },
'cygnus' => \$cygnus_mode,
'foreign' => sub { &set_strictness ('foreign'); },
'include-deps' => sub { $cmdline_use_dependencies = 1; },
'i|ignore-deps' => sub { $cmdline_use_dependencies = 0; },
# The current --no-force implementation is bugged, hence the
# option is ignored. It will be fixed in Automake 1.8.
'no-force' => sub { },
'f|force-missing' => \$force_missing,
'o|output-dir:s' => \$output_directory,
'a|add-missing' => \$add_missing,
'c|copy' => \$copy_missing,
'v|verbose' => sub { setup_channel 'verb', silent => 0; },
'W|warnings:s' => \&parse_warnings,
# These long options (--Werror and --Wno-error) for backward
# compatibility. Use -Werror and -Wno-error today.
'Werror' => sub { parse_warnings 'W', 'error'; },
'Wno-error' => sub { parse_warnings 'W', 'no-error'; },
);
use Getopt::Long;
Getopt::Long::config ("bundling", "pass_through");
# See if --version or --help is used. We want to process these before
# anything else because the GNU Coding Standards require us to
# `exit 0' after processing these options, and we can't guarantee this
# if we treat other options first. (Handling other options first
# could produce error diagnostics, and in this condition it is
# confusing if Automake does `exit 0'.)
my %options_1st_pass =
(
'version' => \&version,
'help' => \&usage,
# Recognize all other options (and their arguments) but do nothing.
map { $_ => sub {} } (keys %options)
);
my @ARGV_backup = @ARGV;
Getopt::Long::GetOptions %options_1st_pass
or exit 1;
@ARGV = @ARGV_backup;
# Now *really* process the options. This time we know
# that --help and --version are not present.
Getopt::Long::GetOptions %options
or exit 1;
if (defined $output_directory)
{
msg 'obsolete', "`--output-dir' is deprecated\n";
}
else
{
# In the next release we'll remove this entirely.
$output_directory = '.';
}
foreach my $arg (@ARGV)
{
if ($arg =~ /^-./)
{
fatal ("unrecognized option `$arg'\n"
. "Try `$0 --help' for more information.");
}
# Handle $local:$input syntax. Note that we only examine the
# first ":" file to see if it is automake input; the rest are
# just taken verbatim. We still keep all the files around for
# dependency checking, however.
my ($local, $input, @rest) = split (/:/, $arg);
if (! $input)
{
$input = $local;
}
else
{
# Strip .in; later on .am is tacked on. That is how the
# automake input file is found. Maybe not the best way, but
# it is easy to explain.
$input =~ s/\.in$//
or fatal "invalid input file name `$arg'\n.";
}
push (@input_files, $input);
$output_files{$input} = join (':', ($local, @rest));
}
# Take global strictness from whatever we currently have set.
$default_strictness = $strictness;
$default_strictness_name = $strictness_name;
}
################################################################
# Generate a Makefile.in given the name of the corresponding Makefile and
# the name of the file output by config.status.
sub generate_makefile
{
my ($output, $makefile) = @_;
# Reset all the Makefile.am related variables.
&initialize_per_input;
# Any warning setting now local to this Makefile.am.
&dup_channel_setup;
# AUTOMAKE_OPTIONS can contains -W flags to disable or enable
# warnings for this file. So hold any warning issued before
# we have processed AUTOMAKE_OPTIONS.
&buffer_messages ('warning');
# Name of input file ("Makefile.am") and output file
# ("Makefile.in"). These have no directory components.
$am_file_name = basename ($makefile) . '.am';
$in_file_name = basename ($makefile) . '.in';
# $OUTPUT is encoded. If it contains a ":" then the first element
# is the real output file, and all remaining elements are input
# files. We don't scan or otherwise deal with these input files,
# other than to mark them as dependencies. See
# &scan_autoconf_files for details.
my (@secondary_inputs);
($output, @secondary_inputs) = split (/:/, $output);
$relative_dir = dirname ($output);
$am_relative_dir = dirname ($makefile);
&read_main_am_file ($makefile . '.am');
if (&handle_options)
{
# Process buffered warnings.
&flush_messages;
# Fatal error. Just return, so we can continue with next file.
return;
}
# Process buffered warnings.
&flush_messages;
# There are a few install-related variables that you should not define.
foreach my $var ('PRE_INSTALL', 'POST_INSTALL', 'NORMAL_INSTALL')
{
if (exists $var_owner{$var})
{
prog_error "\$var_owner{$var}{TRUE} doesn't exist"
unless exists $var_owner{$var}{'TRUE'};
reject_var $var, "`$var' should not be defined"
if $var_owner{$var}{'TRUE'} != VAR_AUTOMAKE;
}
}
# Catch some obsolete variables.
msg_var ('obsolete', 'INCLUDES',
"`INCLUDES' is the old name for `AM_CPPFLAGS'")
if variable_defined ('INCLUDES');
# At the toplevel directory, we might need config.guess, config.sub
# or libtool scripts (ltconfig and ltmain.sh).
if ($relative_dir eq '.')
{
# AC_CANONICAL_HOST and AC_CANONICAL_SYSTEM need config.guess and
# config.sub.
require_conf_file ($canonical_location, FOREIGN,
'config.guess', 'config.sub')
if $seen_canonical;
}
push (@sources, '$(SOURCES)')
if variable_defined ('SOURCES');
# Must do this after reading .am file. See read_main_am_file to
# understand weird tricks we play there with variables.
&define_variable ('subdir', $relative_dir);
# Check first, because we might modify some state.
&check_cygnus;
&check_gnu_standards;
&check_gnits_standards;
&handle_configure ($output, $makefile, @secondary_inputs);
&handle_gettext;
&handle_libraries;
&handle_ltlibraries;
&handle_programs;
&handle_scripts;
# This must run first so that the ANSI2KNR definition is generated
# before it is used by the _.c rules. We have to do this because
# a variable which is used in a dependency must be defined before
# the target, or else make won't properly see it.
&handle_compile;
# This must be run after all the sources are scanned.
&handle_languages;
# We have to run this after dealing with all the programs.
&handle_libtool;
# Re-init SOURCES. FIXME: other code shouldn't depend on this
# (but currently does).
macro_define ('SOURCES', VAR_AUTOMAKE, '', 'TRUE', "@sources", 'internal');
define_pretty_variable ('DIST_SOURCES', '', @dist_sources);
&handle_multilib;
&handle_texinfo;
&handle_emacs_lisp;
&handle_python;
&handle_java;
&handle_man_pages;
&handle_data;
&handle_headers;
&handle_subdirs;
&handle_tags;
&handle_minor_options;
&handle_tests;
# This must come after most other rules.
&handle_dist ($makefile);
&handle_footer;
&do_check_merge_target;
&handle_all ($output);
# FIXME: Gross!
if (variable_defined ('lib_LTLIBRARIES') &&
variable_defined ('bin_PROGRAMS'))
{
$output_rules .= "install-binPROGRAMS: install-libLTLIBRARIES\n\n";
}
&handle_install;
&handle_clean;
&handle_factored_dependencies;
check_typos ();
if (! -d ($output_directory . '/' . $am_relative_dir))
{
mkdir ($output_directory . '/' . $am_relative_dir, 0755);
}
my ($out_file) = $output_directory . '/' . $makefile . ".in";
if (! $force_generation && -e $out_file)
{
my ($am_time) = (stat ($makefile . '.am'))[9];
my ($in_time) = (stat ($out_file))[9];
# FIXME: should cache these times.
my ($conf_time) = (stat ($configure_ac))[9];
# FIXME: how to do unsigned comparison?
if ($am_time < $in_time || $am_time < $conf_time)
{
# No need to update.
return;
}
if (-f 'aclocal.m4')
{
my ($acl_time) = (stat _)[9];
return if ($am_time < $acl_time);
}
}
if (-e "$out_file")
{
unlink ($out_file)
or fatal "cannot remove $out_file: $!\n";
}
my $gm_file = new Automake::XFile "> $out_file";
verb "creating $makefile.in";
print $gm_file $output_vars;
# We make sure that `all:' is the first target.
print $gm_file $output_all;
print $gm_file $output_header;
print $gm_file $output_rules;
print $gm_file $output_trailer;
# Back out any warning setting.
&drop_channel_setup;
}
################################################################
# A version is a string that looks like
# MAJOR.MINOR[.MICRO][ALPHA][-FORK]
# where
# MAJOR, MINOR, and MICRO are digits, ALPHA is a character, and
# FORK any alphanumeric word.
# Usually, ALPHA is used to label alpha releases or intermediate snapshots,
# FORK is used for CVS branches or patched releases, and MICRO is used
# for bug fixes releases on the MAJOR.MINOR branch.
#
# For the purpose of ordering, 1.4 is the same as 1.4.0, but 1.4g is
# the same as 1.4.99g. The FORK identifier is ignored in the
# ordering, except when it looks like -pMINOR[ALPHA]: some versions
# were labelled like 1.4-p3a, this is the same as an alpha release
# labelled 1.4.3a. Yes it's horrible, but Automake did not support
# two-dot versions in the past.
# version_split (VERSION)
# -----------------------
# Split a version string into the corresponding (MAJOR, MINOR, MICRO,
# ALPHA, FORK) tuple. For instance "1.4g" would be split into
# (1, 4, 99, 'g', '').
# Return () on error.
sub version_split ($)
{
my ($ver) = @_;
# Special case for versions like 1.4-p2a.
if ($ver =~ /^(\d+)\.(\d+)(?:-p(\d+)([a-z]+)?)$/)
{
return ($1, $2, $3, $4 || '', '');
}
# Common case.
elsif ($ver =~ /^(\d+)\.(\d+)(?:\.(\d+))?([a-z])?(?:-([A-Za-z0-9]+))?$/)
{
return ($1, $2, $3 || (defined $4 ? 99 : 0), $4 || '', $5 || '');
}
return ();
}
# version_compare (\@LVERSION, \@RVERSION)
# ----------------------------------------
# Return 1 if LVERSION > RVERSION,
# -1 if LVERSION < RVERSION,
# 0 if LVERSION = RVERSION.
sub version_compare (\@\@)
{
my @l = @{$_[0]};
my @r = @{$_[1]};
for my $i (0, 1, 2)
{
return 1 if ($l[$i] > $r[$i]);
return -1 if ($l[$i] < $r[$i]);
}
for my $i (3, 4)
{
return 1 if ($l[$i] gt $r[$i]);
return -1 if ($l[$i] lt $r[$i]);
}
return 0;
}
# Handles the logic of requiring a version number in AUTOMAKE_OPTIONS.
# Return 0 if the required version is satisfied, 1 otherwise.
sub version_check ($)
{
my ($required) = @_;
my @version = version_split $VERSION;
my @required = version_split $required;
prog_error "version is incorrect: $VERSION"
if $#version == -1;
# This should not happen, because process_option_list and split_version
# use similar regexes.
prog_error "required version is incorrect: $required"
if $#required == -1;
# If we require 3.4n-foo then we require something
# >= 3.4n, with the `foo' fork identifier.
return 1
if ($required[4] ne '' && $required[4] ne $version[4]);
return 0 > version_compare @version, @required;
}
# $BOOL
# process_option_list ($CONFIG, @OPTIONS)
# ------------------------------
# Process a list of options. Return 1 on error, 0 otherwise.
# This is a helper for handle_options. CONFIG is true if we're
# handling global options.
sub process_option_list
{
my ($config, @list) = @_;
# FIXME: We should disallow conditional definitions of AUTOMAKE_OPTIONS.
my $where = ($config ?
$seen_init_automake :
$var_location{'AUTOMAKE_OPTIONS'}{'TRUE'});
foreach (@list)
{
$options{$_} = $where;
if ($_ eq 'gnits' || $_ eq 'gnu' || $_ eq 'foreign')
{
&set_strictness ($_);
}
elsif ($_ eq 'cygnus')
{
$cygnus_mode = $where;
}
elsif (/^(.*\/)?ansi2knr$/)
{
# An option like "../lib/ansi2knr" is allowed. With no
# path prefix, we assume the required programs are in this
# directory. We save the actual option for later.
$options{'ansi2knr'} = [$_, $where];
}
elsif ($_ eq 'no-installman' || $_ eq 'no-installinfo'
|| $_ eq 'dist-shar' || $_ eq 'dist-zip'
|| $_ eq 'dist-tarZ' || $_ eq 'dist-bzip2'
|| $_ eq 'dejagnu' || $_ eq 'no-texinfo.tex'
|| $_ eq 'readme-alpha' || $_ eq 'check-news'
|| $_ eq 'subdir-objects' || $_ eq 'nostdinc'
|| $_ eq 'no-exeext' || $_ eq 'no-define'
|| $_ eq 'std-options')
{
# Explicitly recognize these.
}
elsif ($_ eq 'no-dependencies')
{
$use_dependencies = 0;
}
elsif (/^\d+\.\d+(?:\.\d+)?[a-z]?(?:-[A-Za-z0-9]+)?$/)
{
# Got a version number.
if (version_check $&)
{
error ($where, "require Automake $_, but have $VERSION",
uniq_scope => US_GLOBAL);
return 1;
}
}
elsif (/^(?:--warnings=|-W)(.*)$/)
{
foreach my $cat (split (',', $1))
{
msg 'unsupported', $where, "unknown warning category `$cat'"
if switch_warning $cat;
}
}
else
{
error ($where, "option `$_' not recognized",
uniq_scope => US_GLOBAL);
return 1;
}
}
}
# Handle AUTOMAKE_OPTIONS variable. Return 1 on error, 0 otherwise.
sub handle_options
{
# Process global options first so that more specific options can
# override.
if (&process_option_list (1, split (' ', $global_options)))
{
return 1;
}
if (variable_defined ('AUTOMAKE_OPTIONS'))
{
if (&process_option_list (0, &variable_value_as_list_recursive ('AUTOMAKE_OPTIONS', '')))
{
return 1;
}
}
if ($strictness == GNITS)
{
$options{'readme-alpha'} = 1;
$options{'std-options'} = 1;
$options{'check-news'} = 1;
}
return 0;
}
# get_object_extension ($OUT)
# ---------------------------
# Return object extension. Just once, put some code into the output.
# OUT is the name of the output file
sub get_object_extension
{
my ($out) = @_;
# Maybe require libtool library object files.
my $extension = '.$(OBJEXT)';
$extension = '.lo' if ($out =~ /\.la$/);
# Check for automatic de-ANSI-fication.
$extension = '$U' . $extension
if defined $options{'ansi2knr'};
$get_object_extension_was_run = 1;
return $extension;
}
# Call finish function for each language that was used.
sub handle_languages
{
if ($use_dependencies)
{
# Include auto-dep code. Don't include it if DEP_FILES would
# be empty.
if (&saw_sources_p (0) && keys %dep_files)
{
# Set location of depcomp.
&define_variable ('depcomp', "\$(SHELL) $config_aux_dir/depcomp");
&define_variable ('am__depfiles_maybe', 'depfiles');
require_conf_file ("$am_file.am", FOREIGN, 'depcomp');
my @deplist = sort keys %dep_files;
# We define this as a conditional variable because BSD
# make can't handle backslashes for continuing comments on
# the following line.
define_pretty_variable ('DEP_FILES', 'AMDEP_TRUE', @deplist);
# Generate each `include' individually. Irix 6 make will
# not properly include several files resulting from a
# variable expansion; generating many separate includes
# seems safest.
$output_rules .= "\n";
foreach my $iter (@deplist)
{
$output_rules .= (subst ('AMDEP_TRUE')
. subst ('am__include')
. ' '
. subst ('am__quote')
. $iter
. subst ('am__quote')
. "\n");
}
# Compute the set of directories to remove in distclean-depend.
my @depdirs = uniq (map { dirname ($_) } @deplist);
$output_rules .= &file_contents ('depend',
DEPDIRS => "@depdirs");
}
}
else
{
&define_variable ('depcomp', '');
&define_variable ('am__depfiles_maybe', '');
}
my %done;
# Is the c linker needed?
my $needs_c = 0;
foreach my $ext (sort keys %extension_seen)
{
next unless $extension_map{$ext};
my $lang = $languages{$extension_map{$ext}};
my $rule_file = $lang->rule_file || 'depend2';
# Get information on $LANG.
my $pfx = $lang->autodep;
my $fpfx = ($pfx eq '') ? 'CC' : $pfx;
my $AMDEP = (($use_dependencies && $lang->autodep ne 'no')
? 'AMDEP' : 'FALSE');
my $FASTDEP = (($use_dependencies && $lang->autodep ne 'no')
? ('am__fastdep' . $fpfx) : 'FALSE');
my %transform = ('EXT' => $ext,
'PFX' => $pfx,
'FPFX' => $fpfx,
'AMDEP' => $AMDEP,
'FASTDEP' => $FASTDEP,
'-c' => $lang->compile_flag || '',
'MORE-THAN-ONE'
=> (count_files_for_language ($lang->name) > 1));
# Generate the appropriate rules for this extension.
if (($use_dependencies && $lang->autodep ne 'no')
|| defined $lang->compile)
{
# Some C compilers don't support -c -o. Use it only if really
# needed.
my $output_flag = $lang->output_flag || '';
$output_flag = '-o'
if (! $output_flag
&& $lang->name eq 'c'
&& defined $options{'subdir-objects'});
# Compute a possible derived extension.
# This is not used by depend2.am.
my $der_ext = (&{$lang->output_extensions} ($ext))[0];
$output_rules .=
file_contents ($rule_file,
%transform,
'GENERIC' => 1,
'DERIVED-EXT' => $der_ext,
# In this situation we know that the
# object is in this directory, so
# $(DEPDIR) is the correct location for
# dependencies.
'DEPBASE' => '$(DEPDIR)/$*',
'BASE' => '$*',
'SOURCE' => '$<',
'OBJ' => '$@',
'OBJOBJ' => '$@',
'LTOBJ' => '$@',
'COMPILE' => '$(' . $lang->compiler . ')',
'LTCOMPILE' => '$(LT' . $lang->compiler . ')',
'-o' => $output_flag);
}
# Now include code for each specially handled object with this
# language.
my %seen_files = ();
foreach my $file (@{$lang_specific_files{$lang->name}})
{
my ($derived, $source, $obj, $myext) = split (' ', $file);
# We might see a given object twice, for instance if it is
# used under different conditions.
next if defined $seen_files{$obj};
$seen_files{$obj} = 1;
prog_error ("found " . $lang->name .
" in handle_languages, but compiler not defined")
unless defined $lang->compile;
my $obj_compile = $lang->compile;
# Rewrite each occurrence of `AM_$flag' in the compile
# rule into `${derived}_$flag' if it exists.
for my $flag (@{$lang->flags})
{
my $val = "${derived}_$flag";
$obj_compile =~ s/\(AM_$flag\)/\($val\)/
if variable_defined ($val);
}
my $obj_ltcompile = '$(LIBTOOL) --mode=compile ' . $obj_compile;
# We _need_ `-o' for per object rules.
my $output_flag = $lang->output_flag || '-o';
my $depbase = dirname ($obj);
$depbase = ''
if $depbase eq '.';
$depbase .= '/'
unless $depbase eq '';
$depbase .= '$(DEPDIR)/' . basename ($obj);
# Support for deansified files in subdirectories is ugly
# enough to deserve an explanation.
#
# A Note about normal ansi2knr processing first. On
#
# AUTOMAKE_OPTIONS = ansi2knr
# bin_PROGRAMS = foo
# foo_SOURCES = foo.c
#
# we generate rules similar to:
#
# foo: foo$U.o; link ...
# foo$U.o: foo$U.c; compile ...
# foo_.c: foo.c; ansi2knr ...
#
# this is fairly compact, and will call ansi2knr depending
# on the value of $U (`' or `_').
#
# It's harder with subdir sources. On
#
# AUTOMAKE_OPTIONS = ansi2knr
# bin_PROGRAMS = foo
# foo_SOURCES = sub/foo.c
#
# we have to create foo_.c in the current directory.
# (Unless the user asks 'subdir-objects'.) This is important
# in case the same file (`foo.c') is compiled from other
# directories with different cpp options: foo_.c would
# be preprocessed for only one set of options if it were
# put in the subdirectory.
#
# Because foo$U.o must be built from either foo_.c or
# sub/foo.c we can't be as concise as in the first example.
# Instead we output
#
# foo: foo$U.o; link ...
# foo_.o: foo_.c; compile ...
# foo.o: sub/foo.c; compile ...
# foo_.c: foo.c; ansi2knr ...
#
# This is why we'll now transform $rule_file twice
# if we detect this case.
# A first time we output the compile rule with `$U'
# replaced by `_' and the source directory removed,
# and another time we simply remove `$U'.
#
# Note that at this point $source (as computed by
# &handle_single_transform_list) is `sub/foo$U.c'.
# This can be confusing: it can be used as-is when
# subdir-objects is set, otherwise you have to know
# it really means `foo_.c' or `sub/foo.c'.
my $objdir = dirname ($obj);
my $srcdir = dirname ($source);
if ($lang->ansi && $obj =~ /\$U/)
{
prog_error "`$obj' contains \$U, but `$source' doesn't."
if $source !~ /\$U/;
(my $source_ = $source) =~ s/\$U/_/g;
# Explicitly clean the _.c files if they are in
# a subdirectory. (In the current directory they get
# erased by a `rm -f *_.c' rule.)
$clean_files{$source_} = MOSTLY_CLEAN
if $objdir ne '.';
# Output an additional rule if _.c and .c are not in
# the same directory. (_.c is always in $objdir.)
if ($objdir ne $srcdir)
{
(my $obj_ = $obj) =~ s/\$U/_/g;
(my $depbase_ = $depbase) =~ s/\$U/_/g;
$source_ = basename ($source_);
$output_rules .=
file_contents ($rule_file,
%transform,
GENERIC => 0,
DEPBASE => $depbase_,
BASE => $obj_,
SOURCE => $source_,
OBJ => "$obj_$myext",
OBJOBJ => "$obj_.obj",
LTOBJ => "$obj_.lo",
COMPILE => $obj_compile,
LTCOMPILE => $obj_ltcompile,
-o => $output_flag);
$obj =~ s/\$U//g;
$depbase =~ s/\$U//g;
$source =~ s/\$U//g;
}
}
$output_rules .=
file_contents ($rule_file,
(%transform,
'GENERIC' => 0,
'DEPBASE' => $depbase,
'BASE' => $obj,
'SOURCE' => $source,
# Use $myext and not `.o' here, in case
# we are actually building a new source
# file -- e.g. via yacc.
'OBJ' => "$obj$myext",
'OBJOBJ' => "$obj.obj",
'LTOBJ' => "$obj.lo",
'COMPILE' => $obj_compile,
'LTCOMPILE' => $obj_ltcompile,
'-o' => $output_flag));
}
# The rest of the loop is done once per language.
next if defined $done{$lang};
$done{$lang} = 1;
# Load the language dependent Makefile chunks.
my %lang = map { uc ($_) => 0 } keys %languages;
$lang{uc ($lang->name)} = 1;
$output_rules .= file_contents ('lang-compile', %transform, %lang);
# If the source to a program consists entirely of code from a
# `pure' language, for instance C++ for Fortran 77, then we
# don't need the C compiler code. However if we run into
# something unusual then we do generate the C code. There are
# probably corner cases here that do not work properly.
# People linking Java code to Fortran code deserve pain.
$needs_c ||= ! $lang->pure;
define_compiler_variable ($lang)
if ($lang->compile);
define_linker_variable ($lang)
if ($lang->link);
require_variables ("$am_file.am", $lang->Name . " source seen",
'TRUE', @{$lang->config_vars});
# Call the finisher.
$lang->finish;
# Flags listed in `->flags' are user variables (per GNU Standards),
# they should not be overridden in the Makefile...
my @dont_override = @{$lang->flags};
# ... and so is LDFLAGS.
push @dont_override, 'LDFLAGS' if $lang->link;
foreach my $flag (@dont_override)
{
if (exists $var_owner{$flag})
{
for my $cond (keys %{$var_owner{$flag}})
{
if ($var_owner{$flag}{$cond} == VAR_MAKEFILE)
{
msg_cond_var ('gnu', $cond, $flag,
"`$flag' is a user variable, "
. "you should not override it;\n"
. "use `AM_$flag' instead.");
}
}
}
}
}
# If the project is entirely C++ or entirely Fortran 77 (i.e., 1
# suffix rule was learned), don't bother with the C stuff. But if
# anything else creeps in, then use it.
$needs_c = 1
if $need_link || ((scalar keys %$suffix_rules)
- (scalar keys %$suffix_rules_default)) > 1;
if ($needs_c)
{
&define_compiler_variable ($languages{'c'})
unless defined $done{$languages{'c'}};
define_linker_variable ($languages{'c'});
}
}
# Check to make sure a source defined in LIBOBJS is not explicitly
# mentioned. This is a separate function (as opposed to being inlined
# in handle_source_transform) because it isn't always appropriate to
# do this check.
sub check_libobjs_sources
{
my ($one_file, $unxformed) = @_;
foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
'dist_EXTRA_', 'nodist_EXTRA_')
{
my @files;
if (variable_defined ($prefix . $one_file . '_SOURCES'))
{
@files = &variable_value_as_list_recursive (
($prefix . $one_file . '_SOURCES'),
'all');
}
elsif ($prefix eq '')
{
@files = ($unxformed . '.c');
}
else
{
next;
}
foreach my $file (@files)
{
err_var ($prefix . $one_file . '_SOURCES',
"automatically discovered file `$file' should not" .
" be explicitly mentioned")
if defined $libsources{$file};
}
}
}
# @OBJECTS
# handle_single_transform_list ($VAR, $TOPPARENT, $DERIVED, $OBJ, @FILES)
# -----------------------------------------------------------------------
# Does much of the actual work for handle_source_transform.
# Arguments are:
# $VAR is the name of the variable that the source filenames come from
# $TOPPARENT is the name of the _SOURCES variable which is being processed
# $DERIVED is the name of resulting executable or library
# $OBJ is the object extension (e.g., `$U.lo')
# @FILES is the list of source files to transform
# Result is a list of the names of objects
# %linkers_used will be updated with any linkers needed
sub handle_single_transform_list ($$$$@)
{
my ($var, $topparent, $derived, $obj, @files) = @_;
my @result = ();
my $nonansi_obj = $obj;
$nonansi_obj =~ s/\$U//g;
# Turn sources into objects. We use a while loop like this
# because we might add to @files in the loop.
while (scalar @files > 0)
{
$_ = shift @files;
# Configure substitutions in _SOURCES variables are errors.
if (/^\@.*\@$/)
{
err_var ($var,
"`$var' includes configure substitution `$_', and is " .
"referred to\nfrom `$topparent': configure " .
"substitutions are not allowed\nin _SOURCES variables");
next;
}
# If the source file is in a subdirectory then the `.o' is put
# into the current directory, unless the subdir-objects option
# is in effect.
# Split file name into base and extension.
next if ! /^(?:(.*)\/)?([^\/]*)($KNOWN_EXTENSIONS_PATTERN)$/;
my $full = $_;
my $directory = $1 || '';
my $base = $2;
my $extension = $3;
# We must generate a rule for the object if it requires its own flags.
my $renamed = 0;
my ($linker, $object);
# This records whether we've seen a derived source file (eg,
# yacc output).
my $derived_source = 0;
# This holds the `aggregate context' of the file we are
# currently examining. If the file is compiled with
# per-object flags, then it will be the name of the object.
# Otherwise it will be `AM'. This is used by the target hook
# language function.
my $aggregate = 'AM';
$extension = &derive_suffix ($extension, $nonansi_obj);
my $lang;
if ($extension_map{$extension} &&
($lang = $languages{$extension_map{$extension}}))
{
# Found the language, so see what it says.
&saw_extension ($extension);
# Note: computed subr call. The language rewrite function
# should return one of the LANG_* constants. It could
# also return a list whose first value is such a constant
# and whose second value is a new source extension which
# should be applied. This means this particular language
# generates another source file which we must then process
# further.
my $subr = 'lang_' . $lang->name . '_rewrite';
my ($r, $source_extension)
= & $subr ($directory, $base, $extension);
# Skip this entry if we were asked not to process it.
next if $r == LANG_IGNORE;
# Now extract linker and other info.
$linker = $lang->linker;
my $this_obj_ext;
if (defined $source_extension)
{
$this_obj_ext = $source_extension;
$derived_source = 1;
}
elsif ($lang->ansi)
{
$this_obj_ext = $obj;
}
else
{
$this_obj_ext = $nonansi_obj;
}
$object = $base . $this_obj_ext;
# Do we have per-executable flags for this executable?
my $have_per_exec_flags = 0;
foreach my $flag (@{$lang->flags})
{
if (variable_defined ("${derived}_$flag"))
{
$have_per_exec_flags = 1;
last;
}
}
if ($have_per_exec_flags)
{
# We have a per-executable flag in effect for this
# object. In this case we rewrite the object's
# name to ensure it is unique. We also require
# the `compile' program to deal with compilers
# where `-c -o' does not work.
# We choose the name `DERIVED_OBJECT' to ensure
# (1) uniqueness, and (2) continuity between
# invocations. However, this will result in a
# name that is too long for losing systems, in
# some situations. So we provide _SHORTNAME to
# override.
my $dname = $derived;
if (variable_defined ($derived . '_SHORTNAME'))
{
# FIXME: should use the same conditional as
# the _SOURCES variable. But this is really
# silly overkill -- nobody should have
# conditional shortnames.
$dname = &variable_value ($derived . '_SHORTNAME');
}
$object = $dname . '-' . $object;
require_conf_file ("$am_file.am", FOREIGN, 'compile')
if $lang->name eq 'c';
prog_error ($lang->name . " flags defined without compiler")
if ! defined $lang->compile;
$renamed = 1;
}
# If rewrite said it was ok, put the object into a
# subdir.
if ($r == LANG_SUBDIR && $directory ne '')
{
$object = $directory . '/' . $object;
}
# If doing dependency tracking, then we can't print
# the rule. If we have a subdir object, we need to
# generate an explicit rule. Actually, in any case
# where the object is not in `.' we need a special
# rule. The per-object rules in this case are
# generated later, by handle_languages.
if ($renamed || $directory ne '')
{
my $obj_sans_ext = substr ($object, 0,
- length ($this_obj_ext));
my $full_ansi = $full;
if ($lang->ansi && defined $options{'ansi2knr'})
{
$full_ansi =~ s/$KNOWN_EXTENSIONS_PATTERN$/\$U$&/;
$obj_sans_ext .= '$U';
}
my $val = ("$full_ansi $obj_sans_ext "
# Only use $this_obj_ext in the derived
# source case because in the other case we
# *don't* want $(OBJEXT) to appear here.
. ($derived_source ? $this_obj_ext : '.o'));
# If we renamed the object then we want to use the
# per-executable flag name. But if this is simply a
# subdir build then we still want to use the AM_ flag
# name.
if ($renamed)
{
$val = "$derived $val";
$aggregate = $derived;
}
else
{
$val = "AM $val";
}
# Each item on this list is a string consisting of
# four space-separated values: the derived flag prefix
# (eg, for `foo_CFLAGS', it is `foo'), the name of the
# source file, the base name of the output file, and
# the extension for the object file.
push (@{$lang_specific_files{$lang->name}}, $val);
}
}
elsif ($extension eq $nonansi_obj)
{
# This is probably the result of a direct suffix rule.
# In this case we just accept the rewrite.
$object = "$base$extension";
$linker = '';
}
else
{
# No error message here. Used to have one, but it was
# very unpopular.
# FIXME: we could potentially do more processing here,
# perhaps treating the new extension as though it were a
# new source extension (as above). This would require
# more restructuring than is appropriate right now.
next;
}
err_am "object `$object' created by `$full' and `$object_map{$object}'"
if (defined $object_map{$object}
&& $object_map{$object} ne $full);
my $comp_val = (($object =~ /\.lo$/)
? COMPILE_LIBTOOL : COMPILE_ORDINARY);
(my $comp_obj = $object) =~ s/\.lo$/.\$(OBJEXT)/;
if (defined $object_compilation_map{$comp_obj}
&& $object_compilation_map{$comp_obj} != 0
# Only see the error once.
&& ($object_compilation_map{$comp_obj}
!= (COMPILE_LIBTOOL | COMPILE_ORDINARY))
&& $object_compilation_map{$comp_obj} != $comp_val)
{
err_am "object `$comp_obj' created both with libtool and without";
}
$object_compilation_map{$comp_obj} |= $comp_val;
if (defined $lang)
{
# Let the language do some special magic if required.
$lang->target_hook ($aggregate, $object, $full);
}
if ($derived_source)
{
prog_error ($lang->name . " has automatic dependency tracking")
if $lang->autodep ne 'no';
# Make sure this new source file is handled next. That will
# make it appear to be at the right place in the list.
unshift (@files, $object);
# Distribute derived sources unless the source they are
# derived from is not.
&push_dist_common ($object)
unless ($topparent =~ /^(?:nobase_)?nodist_/);
next;
}
$linkers_used{$linker} = 1;
push (@result, $object);
if (! defined $object_map{$object})
{
my @dep_list = ();
$object_map{$object} = $full;
# If resulting object is in subdir, we need to make
# sure the subdir exists at build time.
if ($object =~ /\//)
{
# FIXME: check that $DIRECTORY is somewhere in the
# project
# For Java, the way we're handling it right now, a
# `..' component doesn't make sense.
if ($lang->name eq 'java' && $object =~ /(\/|^)\.\.\//)
{
err_am "`$full' should not contain a `..' component";
}
# Make sure object is removed by `make mostlyclean'.
$compile_clean_files{$object} = MOSTLY_CLEAN;
# If we have a libtool object then we also must remove
# the ordinary .o.
if ($object =~ /\.lo$/)
{
(my $xobj = $object) =~ s,lo$,\$(OBJEXT),;
$compile_clean_files{$xobj} = MOSTLY_CLEAN;
# Remove any libtool object in this directory.
$libtool_clean_directories{$directory} = 1;
}
push (@dep_list, require_build_directory ($directory));
# If we're generating dependencies, we also want
# to make sure that the appropriate subdir of the
# .deps directory is created.
push (@dep_list,
require_build_directory ($directory . '/$(DEPDIR)'))
if $use_dependencies;
}
&pretty_print_rule ($object . ':', "\t", @dep_list)
if scalar @dep_list > 0;
}
# Transform .o or $o file into .P file (for automatic
# dependency code).
if ($lang && $lang->autodep ne 'no')
{
my $depfile = $object;
$depfile =~ s/\.([^.]*)$/.P$1/;
$depfile =~ s/\$\(OBJEXT\)$/o/;
$dep_files{dirname ($depfile) . '/$(DEPDIR)/'
. basename ($depfile)} = 1;
}
}
return @result;
}
# ($LINKER, $OBJVAR)
# define_objects_from_sources ($VAR, $OBJVAR, $NODEFINE, $ONE_FILE,
# $OBJ, $PARENT, $TOPPARENT)
# ---------------------------------------------------------------------
# Define an _OBJECTS variable for a _SOURCES variable (or subvariable)
#
# Arguments are:
# $VAR is the name of the _SOURCES variable
# $OBJVAR is the name of the _OBJECTS variable if known (otherwise
# it will be generated and returned).
# $NODEFINE is a boolean: if true, $OBJVAR will not be defined (but
# work done to determine the linker will be).
# $ONE_FILE is the canonical (transformed) name of object to build
# $OBJ is the object extension (ie either `.o' or `.lo').
# $PARENT is the variable in which $VAR is used, or $VAR if not applicable.
# $TOPPARENT is the _SOURCES variable being processed.
#
# Result is a pair ($LINKER, $OBJVAR):
# $LINKER is a boolean, true if a linker is needed to deal with the objects,
# $OBJVAR is the name of the variable defined to hold the objects.
#
# %linkers_used, %vars_scanned, @substfroms and @substtos should be cleared
# before use:
# %linkers_used variable will be set to contain the linkers desired.
# %vars_scanned will be used to check for recursive definitions.
# @substfroms and @substtos will be used to keep a stack of variable
# substitutions to be applied.
#
sub define_objects_from_sources ($$$$$$$)
{
my ($var, $objvar, $nodefine, $one_file, $obj, $parent, $topparent) = @_;
if (defined $vars_scanned{$var})
{
err_var $var, "variable `$var' recursively defined";
return "";
}
$vars_scanned{$var} = 1;
my $needlinker = "";
my @allresults = ();
foreach my $cond (variable_conditions ($var))
{
my @result;
foreach my $val (&variable_value_as_list ($var, $cond, $parent))
{
# If $val is a variable (i.e. ${foo} or $(bar), not a filename),
# handle the sub variable recursively.
if ($val =~ /^\$\{([^}]*)\}$/ || $val =~ /^\$\(([^)]*)\)$/)
{
my $subvar = $1;
# If the user uses a losing variable name, just ignore it.
# This isn't ideal, but people have requested it.
next if ($subvar =~ /\@.*\@/);
# See if the variable is actually a substitution reference
my ($from, $to);
my @temp_list;
if ($subvar =~ /$SUBST_REF_PATTERN/o)
{
$subvar = $1;
$to = $3;
$from = quotemeta $2;
}
push @substfroms, $from;
push @substtos, $to;
my ($temp, $varname)
= define_objects_from_sources ($subvar, undef,
$nodefine, $one_file,
$obj, $var, $topparent);
push (@result, '$('. $varname . ')');
$needlinker ||= $temp;
pop @substfroms;
pop @substtos;
}
else # $var is a filename
{
my $substnum=$#substfroms;
while ($substnum >= 0)
{
$val =~ s/$substfroms[$substnum]$/$substtos[$substnum]/
if defined $substfroms[$substnum];
$substnum -= 1;
}
my (@transformed) =
&handle_single_transform_list ($var, $topparent, $one_file, $obj, $val);
push (@result, @transformed);
$needlinker = "true" if @transformed;
}
}
push (@allresults, [$cond, @result]);
}
# Find a name for the variable, unless imposed.
$objvar = subobjname (@allresults) unless defined $objvar;
# Define _OBJECTS conditionally
unless ($nodefine)
{
foreach my $pair (@allresults)
{
my ($cond, @result) = @$pair;
define_pretty_variable ($objvar, $cond, @result);
}
}
delete $vars_scanned{$var};
return ($needlinker, $objvar);
}
# $VARNAME
# subobjname (@DEFINITIONS)
# -------------------------
# Return a name for an object variable that with definitions @DEFINITIONS.
# @DEFINITIONS is a list of pair [$COND, @OBJECTS].
#
# If we already have an object variable containing @DEFINITIONS, reuse it.
# This way, we avoid combinatorial explosion of the generated
# variables. Especially, in a Makefile such as:
#
# | if FOO1
# | A1=1
# | endif
# |
# | if FOO2
# | A2=2
# | endif
# |
# | ...
# |
# | if FOON
# | AN=N
# | endif
# |
# | B=$(A1) $(A2) ... $(AN)
# |
# | c_SOURCES=$(B)
# | d_SOURCES=$(B)
#
# The generated c_OBJECTS and d_OBJECTS will share the same variable
# definitions.
#
# This setup can be the case of a testsuite containing lots (>100) of
# small C programs, all testing the same set of source files.
sub subobjname (@)
{
my $key = '';
foreach my $pair (@_)
{
my ($cond, @values) = @$pair;
$key .= "($cond)@values";
}
return $subobjvar{$key} if exists $subobjvar{$key};
my $num = 1 + keys (%subobjvar);
my $name = "am__objects_${num}";
$subobjvar{$key} = $name;
return $name;
}
# Handle SOURCE->OBJECT transform for one program or library.
# Arguments are:
# canonical (transformed) name of object to build
# actual name of object to build
# object extension (ie either `.o' or `$o'.
# Return result is name of linker variable that must be used.
# Empty return means just use `LINK'.
sub handle_source_transform
{
# one_file is canonical name. unxformed is given name. obj is
# object extension.
my ($one_file, $unxformed, $obj) = @_;
my ($linker) = '';
# No point in continuing if _OBJECTS is defined.
return if reject_var ($one_file . '_OBJECTS',
$one_file . '_OBJECTS should not be defined');
my %used_pfx = ();
my $needlinker;
%linkers_used = ();
foreach my $prefix ('', 'EXTRA_', 'dist_', 'nodist_',
'dist_EXTRA_', 'nodist_EXTRA_')
{
my $var = $prefix . $one_file . "_SOURCES";
next
if !variable_defined ($var);
# We are going to define _OBJECTS variables using the prefix.
# Then we glom them all together. So we can't use the null
# prefix here as we need it later.
my $xpfx = ($prefix eq '') ? 'am_' : $prefix;
# Keep track of which prefixes we saw.
$used_pfx{$xpfx} = 1
unless $prefix =~ /EXTRA_/;
push @sources, "\$($var)";
if ($prefix !~ /^nodist_/)
{
# If the VAR wasn't defined conditionally, we add
# it to DIST_SOURCES as is. Otherwise we create a
# am__VAR_DIST variable which contains all possible values,
# and add this variable to DIST_SOURCES.
my $distvar = "$var";
my @conds = variable_conditions_recursive ($var);
if (@conds && $conds[0] ne 'TRUE')
{
$distvar = "am__${var}_DIST";
my @files =
uniq (variable_value_as_list_recursive ($var, 'all'));
define_pretty_variable ($distvar, '', @files);
}
push @dist_sources, "\$($distvar)"
}
@substfroms = ();
@substtos = ();
%vars_scanned = ();
my ($temp, $objvar) =
define_objects_from_sources ($var,
$xpfx . $one_file . '_OBJECTS',
$prefix =~ /EXTRA_/,
$one_file, $obj, $var, $var);
$needlinker ||= $temp;
}
if ($needlinker)
{
$linker ||= &resolve_linker (%linkers_used);
}
my @keys = sort keys %used_pfx;
if (scalar @keys == 0)
{
&define_variable ($one_file . "_SOURCES", $unxformed . ".c");
push (@sources, $unxformed . '.c');
push (@dist_sources, $unxformed . '.c');
%linkers_used = ();
my (@result) =
&handle_single_transform_list ($one_file . '_SOURCES',
$one_file . '_SOURCES',
$one_file, $obj,
"$unxformed.c");
$linker ||= &resolve_linker (%linkers_used);
define_pretty_variable ($one_file . "_OBJECTS", '', @result)
}
else
{
grep ($_ = '$(' . $_ . $one_file . '_OBJECTS)', @keys);
define_pretty_variable ($one_file . '_OBJECTS', '', @keys);
}
# If we want to use `LINK' we must make sure it is defined.
if ($linker eq '')
{
$need_link = 1;
}
return $linker;
}
# handle_lib_objects ($XNAME, $VAR)
# ---------------------------------
# Special-case ALLOCA and LIBOBJS substitutions in _LDADD or _LIBADD variables.
# Also, generate _DEPENDENCIES variable if appropriate.
# Arguments are:
# transformed name of object being built, or empty string if no object
# name of _LDADD/_LIBADD-type variable to examine
# Returns 1 if LIBOBJS seen, 0 otherwise.
sub handle_lib_objects
{
my ($xname, $var) = @_;
prog_error "handle_lib_objects: $var undefined"
if ! variable_defined ($var);
my $ret = 0;
foreach my $cond (variable_conditions_recursive ($var))
{
if (&handle_lib_objects_cond ($xname, $var, $cond))
{
$ret = 1;
}
}
return $ret;
}
# Subroutine of handle_lib_objects: handle a particular condition.
sub handle_lib_objects_cond
{
my ($xname, $var, $cond) = @_;
# We recognize certain things that are commonly put in LIBADD or
# LDADD.
my @dep_list = ();
my $seen_libobjs = 0;
my $flagvar = 0;
foreach my $lsearch (&variable_value_as_list_recursive ($var, $cond))
{
# Skip -lfoo and -Ldir; these are explicitly allowed.
next if $lsearch =~ /^-[lL]/;
if (! $flagvar && $lsearch =~ /^-/)
{
if ($var =~ /^(.*)LDADD$/)
{
# Skip -dlopen and -dlpreopen; these are explicitly allowed.
next if $lsearch =~ /^-dl(pre)?open$/;
my $prefix = $1 || 'AM_';
err_var ($var, "linker flags such as `$lsearch' belong in "
. "`${prefix}LDFLAGS");
}
else
{
$var =~ /^(.*)LIBADD$/;
# Only get this error once.
$flagvar = 1;
err_var ($var, "linker flags such as `$lsearch' belong in "
. "`${1}LDFLAGS");
}
}
# Assume we have a file of some sort, and push it onto the
# dependency list. Autoconf substitutions are not pushed;
# rarely is a new dependency substituted into (eg) foo_LDADD
# -- but "bad things (eg -lX11) are routinely substituted.
# Note that LIBOBJS and ALLOCA are exceptions to this rule,
# and handled specially below.
push (@dep_list, $lsearch)
unless $lsearch =~ /^\@.*\@$/;
# Automatically handle LIBOBJS and ALLOCA substitutions.
# Basically this means adding entries to dep_files.
if ($lsearch =~ /^\@(LT)?LIBOBJS\@$/)
{
my $lt = $1 ? $1 : '';
my $myobjext = ($1 ? 'l' : '') . 'o';
push (@dep_list, $lsearch);
$seen_libobjs = 1;
if (! keys %libsources
&& ! variable_defined ($lt . 'LIBOBJS'))
{
err_var ($var, "\@${lt}LIBOBJS\@ seen but never set in "
. "`$configure_ac'");
}
foreach my $iter (keys %libsources)
{
if ($iter =~ /\.[cly]$/)
{
&saw_extension ($&);
&saw_extension ('.c');
}
if ($iter =~ /\.h$/)
{
require_file_with_macro ($cond, $var, FOREIGN, $iter);
}
elsif ($iter ne 'alloca.c')
{
my $rewrite = $iter;
$rewrite =~ s/\.c$/.P$myobjext/;
$dep_files{'$(DEPDIR)/' . $rewrite} = 1;
$rewrite = "^" . quotemeta ($iter) . "\$";
# Only require the file if it is not a built source.
if (! variable_defined ('BUILT_SOURCES')
|| ! grep (/$rewrite/,
&variable_value_as_list_recursive (
'BUILT_SOURCES', 'all')))
{
require_file_with_macro ($cond, $var, FOREIGN, $iter);
}
}
}
}
elsif ($lsearch =~ /^\@(LT)?ALLOCA\@$/)
{
my $lt = $1 ? $1 : '';
my $myobjext = ($1 ? 'l' : '') . 'o';
push (@dep_list, $lsearch);
err_var ($var, "\@${lt}ALLOCA\@ seen but `AC_FUNC_ALLOCA' not in "
. "`$configure_ac'")
if ! defined $libsources{'alloca.c'};
$dep_files{'$(DEPDIR)/alloca.P' . $myobjext} = 1;
require_file_with_macro ($cond, $var, FOREIGN, 'alloca.c');
&saw_extension ('c');
}
}
if ($xname ne '')
{
my $depvar = $xname . '_DEPENDENCIES';
if ((conditional_ambiguous_p ($depvar, $cond,
keys %{$var_value{$depvar}}))[0] ne '')
{
# Note that we've examined this.
&examine_variable ($depvar);
}
else
{
define_pretty_variable ($depvar, $cond, @dep_list);
}
}
return $seen_libobjs;
}
# Canonicalize the input parameter
sub canonicalize
{
my ($string) = @_;
$string =~ tr/A-Za-z0-9_\@/_/c;
return $string;
}
# Canonicalize a name, and check to make sure the non-canonical name
# is never used. Returns canonical name. Arguments are name and a
# list of suffixes to check for.
sub check_canonical_spelling
{
my ($name, @suffixes) = @_;
my $xname = &canonicalize ($name);
if ($xname ne $name)
{
foreach my $xt (@suffixes)
{
reject_var ("$name$xt", "use `$xname$xt', not `$name$xt'");
}
}
return $xname;
}
# handle_compile ()
# -----------------
# Set up the compile suite.
sub handle_compile ()
{
return
unless $get_object_extension_was_run;
# Boilerplate.
my $default_includes = '';
if (! defined $options{'nostdinc'})
{
$default_includes = ' -I. -I$(srcdir)';
if (variable_defined ('CONFIG_HEADER'))
{
foreach my $hdr (split (' ', &variable_value ('CONFIG_HEADER')))
{
$default_includes .= ' -I' . dirname ($hdr);
}
}
}
my (@mostly_rms, @dist_rms);
foreach my $item (sort keys %compile_clean_files)
{
if ($compile_clean_files{$item} == MOSTLY_CLEAN)
{
push (@mostly_rms, "\t-rm -f $item");
}
elsif ($compile_clean_files{$item} == DIST_CLEAN)
{
push (@dist_rms, "\t-rm -f $item");
}
else
{
prog_error 'invalid entry in %compile_clean_files';
}
}
my ($coms, $vars, $rules) =
&file_contents_internal (1, "$libdir/am/compile.am",
('DEFAULT_INCLUDES' => $default_includes,
'MOSTLYRMS' => join ("\n", @mostly_rms),
'DISTRMS' => join ("\n", @dist_rms)));
$output_vars .= $vars;
$output_rules .= "$coms$rules";
# Check for automatic de-ANSI-fication.
if (defined $options{'ansi2knr'})
{
my ($ansi2knr_filename, $ansi2knr_where) = @{$options{'ansi2knr'}};
my $ansi2knr_dir = '';
require_variables ($ansi2knr_where, "option `ansi2knr' is used",
'TRUE', "ANSI2KNR", "U");
# topdir is where ansi2knr should be.
if ($ansi2knr_filename eq 'ansi2knr')
{
# Only require ansi2knr files if they should appear in
# this directory.
require_file ($ansi2knr_where, FOREIGN,
'ansi2knr.c', 'ansi2knr.1');
# ansi2knr needs to be built before subdirs, so unshift it.
unshift (@all, '$(ANSI2KNR)');
}
else
{
$ansi2knr_dir = dirname ($ansi2knr_filename);
}
$output_rules .= &file_contents ('ansi2knr',
('ANSI2KNR-DIR' => $ansi2knr_dir));
}
}
# handle_libtool ()
# -----------------
# Handle libtool rules.
sub handle_libtool
{
return unless variable_defined ('LIBTOOL');
# Libtool requires some files, but only at top level.
require_conf_file_with_macro ('TRUE', 'LIBTOOL', FOREIGN, @libtool_files)
if $relative_dir eq '.';
my @libtool_rms;
foreach my $item (sort keys %libtool_clean_directories)
{
my $dir = ($item eq '.') ? '' : "$item/";
# .libs is for Unix, _libs for DOS.
push (@libtool_rms, "\t-rm -rf ${dir}.libs ${dir}_libs");
}
# Output the libtool compilation rules.
$output_rules .= &file_contents ('libtool',
('LTRMS' => join ("\n", @libtool_rms)));
}
# handle_programs ()
# ------------------
# Handle C programs.
sub handle_programs
{
my @proglist = &am_install_var ('progs', 'PROGRAMS',
'bin', 'sbin', 'libexec', 'pkglib',
'noinst', 'check');
return if ! @proglist;
my $seen_global_libobjs =
variable_defined ('LDADD') && &handle_lib_objects ('', 'LDADD');
foreach my $one_file (@proglist)
{
my $seen_libobjs = 0;
my $obj = &get_object_extension ($one_file);
# Canonicalize names and check for misspellings.
my $xname = &check_canonical_spelling ($one_file, '_LDADD', '_LDFLAGS',
'_SOURCES', '_OBJECTS',
'_DEPENDENCIES');
my $linker = &handle_source_transform ($xname, $one_file, $obj);
my $xt = '';
if (variable_defined ($xname . "_LDADD"))
{
$seen_libobjs = &handle_lib_objects ($xname, $xname . '_LDADD');
$xt = '_LDADD';
}
else
{
# User didn't define prog_LDADD override. So do it.
&define_variable ($xname . '_LDADD', '$(LDADD)');
# This does a bit too much work. But we need it to
# generate _DEPENDENCIES when appropriate.
if (variable_defined ('LDADD'))
{
$seen_libobjs = &handle_lib_objects ($xname, 'LDADD');
}
elsif (! variable_defined ($xname . '_DEPENDENCIES'))
{
&define_variable ($xname . '_DEPENDENCIES', '');
}
$xt = '_SOURCES';
}
reject_var ($xname . '_LIBADD',
"use `${xname}_LDADD', not `${xname}_LIBADD'");
if (! variable_defined ($xname . '_LDFLAGS'))
{
# Define the prog_LDFLAGS variable.
&define_variable ($xname . '_LDFLAGS', '');
}
# Determine program to use for link.
my $xlink;
if (variable_defined ($xname . '_LINK'))
{
$xlink = $xname . '_LINK';
}
else
{
$xlink = $linker ? $linker : 'LINK';
}
# If the resulting program lies into a subdirectory,
# make sure this directory will exist.
my $dirstamp = require_build_directory_maybe ($one_file);
# Don't add $(EXEEXT) if user already did.
my $extension = ($one_file !~ /\$\(EXEEXT\)$/
? "\$(EXEEXT)"
: '');
$output_rules .= &file_contents ('program',
('PROGRAM' => $one_file,
'XPROGRAM' => $xname,
'XLINK' => $xlink,
'DIRSTAMP' => $dirstamp,
'EXEEXT' => $extension));
if ($seen_libobjs || $seen_global_libobjs)
{
if (variable_defined ($xname . '_LDADD'))
{
&check_libobjs_sources ($xname, $xname . '_LDADD');
}
elsif (variable_defined ('LDADD'))
{
&check_libobjs_sources ($xname, 'LDADD');
}
}
}
}
# handle_libraries ()
# -------------------
# Handle libraries.
sub handle_libraries
{
my @liblist = &am_install_var ('libs', 'LIBRARIES',
'lib', 'pkglib', 'noinst', 'check');
return if ! @liblist;
my @prefix = am_primary_prefixes ('LIBRARIES', 0, 'lib', 'pkglib',
'noinst', 'check');
require_variables_for_macro ($prefix[0] . '_LIBRARIES',
'library used', 'RANLIB')
if (@prefix);
foreach my $onelib (@liblist)
{
my $seen_libobjs = 0;
# Check that the library fits the standard naming convention.
if (basename ($onelib) !~ /^lib.*\.a/)
{
# FIXME should put line number here. That means mapping
# from library name back to variable name.
err_am "`$onelib' is not a standard library name";
}
my $obj = &get_object_extension ($onelib);
# Canonicalize names and check for misspellings.
my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_SOURCES',
'_OBJECTS', '_DEPENDENCIES',
'_AR');
if (! variable_defined ($xlib . '_AR'))
{
&define_variable ($xlib . '_AR', '$(AR) cru');
}
if (variable_defined ($xlib . '_LIBADD'))
{
if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
{
$seen_libobjs = 1;
}
}
else
{
# Generate support for conditional object inclusion in
# libraries.
&define_variable ($xlib . "_LIBADD", '');
}
reject_var ($xlib . '_LDADD',
"use `${xlib}_LIBADD', not `${xlib}_LDADD'");
# Make sure we at look at this.
&examine_variable ($xlib . '_DEPENDENCIES');
&handle_source_transform ($xlib, $onelib, $obj);
# If the resulting library lies into a subdirectory,
# make sure this directory will exist.
my $dirstamp = require_build_directory_maybe ($onelib);
$output_rules .= &file_contents ('library',
('LIBRARY' => $onelib,
'XLIBRARY' => $xlib,
'DIRSTAMP' => $dirstamp));
if ($seen_libobjs)
{
if (variable_defined ($xlib . '_LIBADD'))
{
&check_libobjs_sources ($xlib, $xlib . '_LIBADD');
}
}
}
}
# handle_ltlibraries ()
# ---------------------
# Handle shared libraries.
sub handle_ltlibraries
{
my @liblist = &am_install_var ('ltlib', 'LTLIBRARIES',
'noinst', 'lib', 'pkglib', 'check');
return if ! @liblist;
my %instdirs;
my @prefix = am_primary_prefixes ('LTLIBRARIES', 0, 'lib', 'pkglib',
'noinst', 'check');
require_variables_for_macro ($prefix[0] . '_LTLIBRARIES',
'Libtool library used', 'LIBTOOL')
if (@prefix);
foreach my $key (@prefix)
{
# Get the installation directory of each library.
(my $dir = $key) =~ s/^nobase_//;
for (variable_value_as_list_recursive ($key . '_LTLIBRARIES', 'all'))
{
# We reject libraries which are installed in several places,
# because we don't handle this in the rules (think `-rpath').
#
# However, we allow the same library to be listed many times
# for the same directory. This is for users who need setups
# like
# if COND1
# lib_LTLIBRARIES = libfoo.la
# endif
# if COND2
# lib_LTLIBRARIES = libfoo.la
# endif
#
# Actually this will also allow
# lib_LTLIBRARIES = libfoo.la libfoo.la
# Diagnosing this case doesn't seem worth the plain (we'd
# have to fill $instdirs on a per-condition basis, check
# implied conditions, etc.)
if (defined $instdirs{$_} && $instdirs{$_} ne $dir)
{
err_am ("`$_' is already going to be installed in "
. "`$instdirs{$_}'");
}
else
{
$instdirs{$_} = $dir;
}
}
}
foreach my $onelib (@liblist)
{
my $seen_libobjs = 0;
my $obj = &get_object_extension ($onelib);
# Canonicalize names and check for misspellings.
my $xlib = &check_canonical_spelling ($onelib, '_LIBADD', '_LDFLAGS',
'_SOURCES', '_OBJECTS',
'_DEPENDENCIES');
my $ldflags = $xlib . '_LDFLAGS';
if (! variable_defined ($xlib . '_LDFLAGS'))
{
# Define the lib_LDFLAGS variable.
&define_variable ($xlib . '_LDFLAGS', '');
$ldflags = 'AM_LDFLAGS'
}
# Check that the library fits the standard naming convention.
my $libname_rx = "^lib.*\.la";
if ((variable_defined ($ldflags)
&& grep (/-module/,
&variable_value_as_list_recursive ($ldflags, 'all')))
|| (variable_defined ('LDFLAGS')
&& grep (/-module/,
&variable_value_as_list_recursive ('LDFLAGS', 'all'))))
{
# Relax name checking for libtool modules.
$libname_rx = "\.la";
}
if (basename ($onelib) !~ /$libname_rx$/)
{
# FIXME should put line number here. That means mapping
# from library name back to variable name.
msg_am ('error-gnu/warn',
"`$onelib' is not a standard libtool library name");
}
if (variable_defined ($xlib . '_LIBADD'))
{
if (&handle_lib_objects ($xlib, $xlib . '_LIBADD'))
{
$seen_libobjs = 1;
}
}
else
{
# Generate support for conditional object inclusion in
# libraries.
&define_variable ($xlib . "_LIBADD", '');
}
reject_var ("${xlib}_LDADD",
"use `${xlib}_LIBADD', not `${xlib}_LDADD'");
# Make sure we at look at this.
&examine_variable ($xlib . '_DEPENDENCIES');
my $linker = &handle_source_transform ($xlib, $onelib, $obj);
# Determine program to use for link.
my $xlink;
if (variable_defined ($xlib . '_LINK'))
{
$xlink = $xlib . '_LINK';
}
else
{
$xlink = $linker ? $linker : 'LINK';
}
my $rpath;
if ($instdirs{$onelib} eq 'EXTRA'
|| $instdirs{$onelib} eq 'noinst'
|| $instdirs{$onelib} eq 'check')
{
# It's an EXTRA_ library, so we can't specify -rpath,
# because we don't know where the library will end up.
# The user probably knows, but generally speaking automake
# doesn't -- and in fact configure could decide
# dynamically between two different locations.
$rpath = '';
}
else
{
$rpath = ('-rpath $(' . $instdirs{$onelib} . 'dir)');
}
# If the resulting library lies into a subdirectory,
# make sure this directory will exist.
my $dirstamp = require_build_directory_maybe ($onelib);
# Remember to cleanup .libs/ in this directory.
my $dirname = dirname $onelib;
$libtool_clean_directories{$dirname} = 1;
$output_rules .= &file_contents ('ltlibrary',
('LTLIBRARY' => $onelib,
'XLTLIBRARY' => $xlib,
'RPATH' => $rpath,
'XLINK' => $xlink,
'DIRSTAMP' => $dirstamp));
if ($seen_libobjs)
{
if (variable_defined ($xlib . '_LIBADD'))
{
&check_libobjs_sources ($xlib, $xlib . '_LIBADD');
}
}
}
}
# See if any _SOURCES variable were misspelled.
sub check_typos ()
{
# It is ok if the user sets this particular variable.
&examine_variable ('AM_LDFLAGS');
foreach my $varname (keys %var_value)
{
foreach my $primary ('_SOURCES', '_LIBADD', '_LDADD', '_LDFLAGS',
'_DEPENDENCIES')
{
msg_var 'syntax', $varname, "unused variable: `$varname'"
# Note that a configure variable is always legitimate.
if ($varname =~ /$primary$/ && ! $content_seen{$varname}
&& ! exists $configure_vars{$varname});
}
}
}
# Handle scripts.
sub handle_scripts
{
# NOTE we no longer automatically clean SCRIPTS, because it is
# useful to sometimes distribute scripts verbatim. This happens
# eg in Automake itself.
&am_install_var ('-candist', 'scripts', 'SCRIPTS',
'bin', 'sbin', 'libexec', 'pkgdata',
'noinst', 'check');
}
# ($OUTFILE, $VFILE, @CLEAN_FILES)
# &scan_texinfo_file ($FILENAME)
# ------------------------------
# $OUTFILE is the name of the info file produced by $FILENAME.
# $VFILE is the name of the version.texi file used (empty if none).
# @CLEAN_FILES is the list of by products (indexes etc.)
sub scan_texinfo_file
{
my ($filename) = @_;
# Some of the following extensions are always created, no matter
# whether indexes are used or not. Other (like cps, fns, ... pgs)
# are only created when they are used. We used to scan $FILENAME
# for their use, but that is not enough: they could be used in
# included files. We can't scan included files because we don't
# know the include path. Therefore we always erase these files,
# no matter whether they are used or not.
#
# (tmp is only created if an @macro is used and a certain e-TeX
# feature is not available.)
my %clean_suffixes =
map { $_ => 1 } (qw(aux log toc tmp
cp cps
fn fns
ky kys
vr vrs
tp tps
pg pgs)); # grep 'new.*index' texinfo.tex
my $texi = new Automake::XFile "< $filename";
verb "reading $filename";
my ($outfile, $vfile);
while ($_ = $texi->getline)
{
if (/^\@setfilename +(\S+)/)
{
# Honor only the first @setfilename. (It's possible to have
# more occurrences later if the manual shows examples of how
# to use @setfilename...)
next if $outfile;
$outfile = $1;
if ($outfile =~ /\.(.+)$/ && $1 ne 'info')
{
error ("$filename:$.",
"output `$outfile' has unrecognized extension");
return;
}
}
# A "version.texi" file is actually any file whose name
# matches "vers*.texi".
elsif (/^\@include\s+(vers[^.]*\.texi)\s*$/)
{
$vfile = $1;
}
# Try to find new or unused indexes.
# Creating a new category of index.
elsif (/^\@def(code)?index (\w+)/)
{
$clean_suffixes{$2} = 1;
$clean_suffixes{"$2s"} = 1;
}
# Merging an index into an another.
elsif (/^\@syn(code)?index (\w+) (\w+)/)
{
delete $clean_suffixes{"$2s"};
$clean_suffixes{"$3s"} = 1;
}
}
if ($outfile eq '')
{
err_am "`$filename' missing \@setfilename";
return;
}
my $infobase = basename ($filename);
$infobase =~ s/\.te?xi(nfo)?$//;
return ($outfile, $vfile,
map { "$infobase.$_" } (sort keys %clean_suffixes));
}
# ($DIRSTAMP, @CLEAN_FILES)
# output_texinfo_build_rules ($SOURCE, $DEST, @DEPENDENCIES)
# ----------------------------------------------------------
# SOURCE - the source Texinfo file
# DEST - the destination Info file
# DEPENDENCIES - known dependencies
sub output_texinfo_build_rules ($$@)
{
my ($source, $dest, @deps) = @_;
# Split `a.texi' into `a' and `.texi'.
my ($spfx, $ssfx) = ($source =~ /^(.*?)(\.[^.]*)?$/);
my ($dpfx, $dsfx) = ($dest =~ /^(.*?)(\.[^.]*)?$/);
$ssfx ||= "";
$dsfx ||= "";
# We can output two kinds of rules: the "generic" rules
# use Make suffix rules and are appropriate when
# $source and $dest lie in the current directory; the "specific"
# rules are needed in the other case.
#
# The former are output only once (this is not really apparent
# here, but just remember that some logic deeper in Automake will
# not output the same rule twice); while the later need to be output
# for each Texinfo source.
my $generic;
my $makeinfoflags;
my $sdir = dirname $source;
if ($sdir eq '.' && dirname ($dest) eq '.')
{
$generic = 1;
$makeinfoflags = '-I $(srcdir)';
}
else
{
$generic = 0;
$makeinfoflags = "-I $sdir -I \$(srcdir)/$sdir";
}
# We cannot use a suffix rule to build info files with
# an empty extension. Otherwise we would output a single suffix
# inference rule, with separate dependencies, as in
# .texi:
# $(MAKEINFO) ...
# foo.info: foo.texi
# which confuse Solaris make. (See the Autoconf manual for details.)
# Therefore we use a specific rule in this case. This applies
# to info files only (dvi and pdf files always have an extension).
my $generic_info = ($generic && $dsfx) ? 1 : 0;
# If the resulting file lie into a subdirectory,
# make sure this directory will exist.
my $dirstamp = require_build_directory_maybe ($dest);
$output_rules .= &file_contents ('texibuild',
GENERIC => $generic,
GENERIC_INFO => $generic_info,
SOURCE_SUFFIX => $ssfx,
SOURCE => ($generic ? '$<' : $source),
SOURCE_INFO => ($generic_info ?
'$<' : $source),
SOURCE_REAL => $source,
DEST_PREFIX => $dpfx,
DEST_SUFFIX => $dsfx,
MAKEINFOFLAGS => $makeinfoflags,
DEPS => "@deps",
DIRSTAMP => $dirstamp);
return ($dirstamp, "$dpfx.dvi", "$dpfx.pdf", "$dpfx.ps");
}
# ($DO-SOMETHING, $TEXICLEANS)
# handle_texinfo_helper ()
# ------------------------
# Handle all Texinfo source; helper for handle_texinfo
sub handle_texinfo_helper
{
reject_var 'TEXINFOS', "`TEXINFOS' is an anachronism; use `info_TEXINFOS'";
reject_var 'html_TEXINFOS', "HTML generation not yet supported";
return (0, '') if ! variable_defined ('info_TEXINFOS');
my @texis = &variable_value_as_list_recursive ('info_TEXINFOS', 'all');
my (@info_deps_list, @dvis_list, @pdfs_list, @pss_list, @texi_deps);
my %versions;
my $done = 0;
my @texi_cleans;
my $canonical;
foreach my $info_cursor (@texis)
{
my $infobase = $info_cursor;
$infobase =~ s/\.(txi|texinfo|texi)$//;
if ($infobase eq $info_cursor)
{
# FIXME: report line number.
err_am "texinfo file `$info_cursor' has unrecognized extension";
next;
}
# If 'version.texi' is referenced by input file, then include
# automatic versioning capability.
my ($out_file, $vtexi, @clean_files) =
&scan_texinfo_file ("$relative_dir/$info_cursor")
or next;
push (@texi_cleans, @clean_files);
# If the Texinfo source is in a subdirectory, create the
# resulting info in this subdirectory. If it is in the
# current directory, try hard to not prefix "./" because
# it breaks the generic rules.
my $outdir = dirname ($info_cursor) . '/';
$outdir = "" if $outdir eq './';
$out_file = $outdir . $out_file;
# If user specified file_TEXINFOS, then use that as explicit
# dependency list.
@texi_deps = ();
push (@texi_deps, "$outdir$vtexi") if $vtexi;
my $canonical = &canonicalize ($infobase);
if (variable_defined ($canonical . "_TEXINFOS"))
{
push (@texi_deps, '$(' . $canonical . '_TEXINFOS)');
&push_dist_common ('$(' . $canonical . '_TEXINFOS)');
}
my ($dirstamp, @cfiles) =
output_texinfo_build_rules ($info_cursor, $out_file, @texi_deps);
push (@texi_cleans, @cfiles);
push (@info_deps_list, $out_file);
push (@dvis_list, $infobase . '.dvi');
push (@pdfs_list, $infobase . '.pdf');
push (@pss_list, $infobase . '.ps');
# If a vers*.texi file is needed, emit the rule.
if ($vtexi)
{
err_am ("`$vtexi', included in `$info_cursor', "
. "also included in `$versions{$vtexi}'")
if defined $versions{$vtexi};
$versions{$vtexi} = $info_cursor;
# We number the stamp-vti files. This is doable since the
# actual names don't matter much. We only number starting
# with the second one, so that the common case looks nice.
my $vti = ($done ? $done : 'vti');
++$done;
# This is ugly, but it is our historical practice.
if ($config_aux_dir_set_in_configure_in)
{
require_conf_file_with_macro ('TRUE', 'info_TEXINFOS', FOREIGN,
'mdate-sh');
}
else
{
require_file_with_macro ('TRUE', 'info_TEXINFOS',
FOREIGN, 'mdate-sh');
}
my $conf_dir;
if ($config_aux_dir_set_in_configure_in)
{
$conf_dir = $config_aux_dir;
$conf_dir .= '/' unless $conf_dir =~ /\/$/;
}
else
{
$conf_dir = '$(srcdir)/';
}
$output_rules .= &file_contents ('texi-vers',
TEXI => $info_cursor,
VTI => $vti,
STAMPVTI => "${outdir}stamp-$vti",
VTEXI => "$outdir$vtexi",
MDDIR => $conf_dir,
DIRSTAMP => $dirstamp);
}
}
# Handle location of texinfo.tex.
my $need_texi_file = 0;
my $texinfodir;
if (variable_defined ('TEXINFO_TEX'))
{
# The user defined TEXINFO_TEX so assume he knows what he is
# doing.
$texinfodir = ('$(srcdir)/'
. dirname (&variable_value ('TEXINFO_TEX')));
}
elsif ($cygnus_mode)
{
$texinfodir = '$(top_srcdir)/../texinfo';
&define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex");
}
elsif ($config_aux_dir_set_in_configure_in)
{
$texinfodir = $config_aux_dir;
&define_variable ('TEXINFO_TEX', "$texinfodir/texinfo.tex");
$need_texi_file = 2; # so that we require_conf_file later
}
else
{
$texinfodir = '$(srcdir)';
$need_texi_file = 1;
}
&define_variable ('am__TEXINFO_TEX_DIR', $texinfodir);
# The return value.
my $texiclean = &pretty_print_internal ("", "\t ", @texi_cleans);
push (@dist_targets, 'dist-info');
if (! defined $options{'no-installinfo'})
{
# Make sure documentation is made and installed first. Use
# $(INFO_DEPS), not 'info', because otherwise recursive makes
# get run twice during "make all".
unshift (@all, '$(INFO_DEPS)');
}
&define_variable ("INFO_DEPS", "@info_deps_list");
&define_variable ("DVIS", "@dvis_list");
&define_variable ("PDFS", "@pdfs_list");
&define_variable ("PSS", "@pss_list");
# This next isn't strictly needed now -- the places that look here
# could easily be changed to look in info_TEXINFOS. But this is
# probably better, in case noinst_TEXINFOS is ever supported.
&define_variable ("TEXINFOS", &variable_value ('info_TEXINFOS'));
# Do some error checking. Note that this file is not required
# when in Cygnus mode; instead we defined TEXINFO_TEX explicitly
# up above.
if ($need_texi_file && ! defined $options{'no-texinfo.tex'})
{
if ($need_texi_file > 1)
{
require_conf_file_with_macro ('TRUE', 'info_TEXINFOS', FOREIGN,
'texinfo.tex');
}
else
{
require_file_with_macro ('TRUE', 'info_TEXINFOS', FOREIGN,
'texinfo.tex');
}
}
return (1, $texiclean);
}
# handle_texinfo ()
# -----------------
# Handle all Texinfo source.
sub handle_texinfo
{
my ($do_something, $texiclean) = handle_texinfo_helper ();
$output_rules .= &file_contents ('texinfos',
('TEXICLEAN' => $texiclean,
'LOCAL-TEXIS' => $do_something));
}
# Handle any man pages.
sub handle_man_pages
{
reject_var 'MANS', "`MANS' is an anachronism; use `man_MANS'";
# Find all the sections in use. We do this by first looking for
# "standard" sections, and then looking for any additional
# sections used in man_MANS.
my (%sections, %vlist);
# We handle nodist_ for uniformity. man pages aren't distributed
# by default so it isn't actually very important.
foreach my $pfx ('', 'dist_', 'nodist_')
{
# Add more sections as needed.
foreach my $section ('0'..'9', 'n', 'l')
{
if (variable_defined ($pfx . 'man' . $section . '_MANS'))
{
$sections{$section} = 1;
$vlist{'$(' . $pfx . 'man' . $section . '_MANS)'} = 1;
&push_dist_common ('$(' . $pfx . 'man' . $section . '_MANS)')
if $pfx eq 'dist_';
}
}
if (variable_defined ($pfx . 'man_MANS'))
{
$vlist{'$(' . $pfx . 'man_MANS)'} = 1;
foreach (&variable_value_as_list_recursive ($pfx . 'man_MANS', 'all'))
{
# A page like `foo.1c' goes into man1dir.
if (/\.([0-9a-z])([a-z]*)$/)
{
$sections{$1} = 1;
}
}
&push_dist_common ('$(' . $pfx . 'man_MANS)')
if $pfx eq 'dist_';
}
}
return unless %sections;
# Now for each section, generate an install and uninstall rule.
# Sort sections so output is deterministic.
foreach my $section (sort keys %sections)
{
$output_rules .= &file_contents ('mans', ('SECTION' => $section));
}
my @mans = sort keys %vlist;
$output_vars .= file_contents ('mans-vars',
('MANS' => "@mans"));
if (! defined $options{'no-installman'})
{
push (@all, '$(MANS)');
}
}
# Handle DATA variables.
sub handle_data
{
&am_install_var ('-noextra', '-candist', 'data', 'DATA',
'data', 'sysconf', 'sharedstate', 'localstate',
'pkgdata', 'noinst', 'check');
}
# Handle TAGS.
sub handle_tags
{
my @tag_deps = ();
my @ctag_deps = ();
if (variable_defined ('SUBDIRS'))
{
$output_rules .= ("tags-recursive:\n"
. "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
# Never fail here if a subdir fails; it
# isn't important.
. "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
. " && \$(MAKE) \$(AM_MAKEFLAGS) tags); \\\n"
. "\tdone\n");
push (@tag_deps, 'tags-recursive');
&depend ('.PHONY', 'tags-recursive');
$output_rules .= ("ctags-recursive:\n"
. "\tlist=\'\$(SUBDIRS)\'; for subdir in \$\$list; do \\\n"
# Never fail here if a subdir fails; it
# isn't important.
. "\t test \"\$\$subdir\" = . || (cd \$\$subdir"
. " && \$(MAKE) \$(AM_MAKEFLAGS) ctags); \\\n"
. "\tdone\n");
push (@ctag_deps, 'ctags-recursive');
&depend ('.PHONY', 'ctags-recursive');
}
if (&saw_sources_p (1)
|| variable_defined ('ETAGS_ARGS')
|| @tag_deps)
{
my @config;
foreach my $spec (@config_headers)
{
my ($out, @ins) = split_config_file_spec ($spec);
foreach my $in (@ins)
{
# If the config header source is in this directory,
# require it.
push @config, basename ($in)
if $relative_dir eq dirname ($in);
}
}
$output_rules .= &file_contents ('tags',
('CONFIG' => "@config",
'TAGSDIRS' => "@tag_deps",
'CTAGSDIRS' => "@ctag_deps"));
&examine_variable ('TAGS_DEPENDENCIES');
}
elsif (reject_var ('TAGS_DEPENDENCIES',
"doesn't make sense to define `TAGS_DEPENDENCIES'"
. "without\nsources or `ETAGS_ARGS'"))
{
}
else
{
# Every Makefile must define some sort of TAGS rule.
# Otherwise, it would be possible for a top-level "make TAGS"
# to fail because some subdirectory failed.
$output_rules .= "tags: TAGS\nTAGS:\n\n";
# Ditto ctags.
$output_rules .= "ctags: CTAGS\nCTAGS:\n\n";
}
}
# Handle multilib support.
sub handle_multilib
{
if ($seen_multilib && $relative_dir eq '.')
{
$output_rules .= &file_contents ('multilib');
push (@all, 'all-multi');
}
}
# $BOOLEAN
# &for_dist_common ($A, $B)
# -------------------------
# Subroutine for &handle_dist: sort files to dist.
#
# We put README first because it then becomes easier to make a
# Usenet-compliant shar file (in these, README must be first).
#
# FIXME: do more ordering of files here.
sub for_dist_common
{
return 0
if $a eq $b;
return -1
if $a eq 'README';
return 1
if $b eq 'README';
return $a cmp $b;
}
# handle_dist ($MAKEFILE)
# -----------------------
# Handle 'dist' target.
sub handle_dist
{
my ($makefile) = @_;
# `make dist' isn't used in a Cygnus-style tree.
# Omit the rules so that people don't try to use them.
return if $cygnus_mode;
# Look for common files that should be included in distribution.
# If the aux dir is set, and it does not have a Makefile.am, then
# we check for these files there as well.
my $check_aux = 0;
my $auxdir = '';
if ($relative_dir eq '.'
&& $config_aux_dir_set_in_configure_in)
{
($auxdir = $config_aux_dir) =~ s,^\$\(top_srcdir\)/,,;
if (! &is_make_dir ($auxdir))
{
$check_aux = 1;
}
}
foreach my $cfile (@common_files)
{
if (-f ($relative_dir . "/" . $cfile)
# The file might be absent, but if it can be built it's ok.
|| exists $targets{$cfile})
{
&push_dist_common ($cfile);
}
# Don't use `elsif' here because a file might meaningfully
# appear in both directories.
if ($check_aux && -f ($auxdir . '/' . $cfile))
{
&push_dist_common ($auxdir . '/' . $cfile);
}
}
# We might copy elements from $configure_dist_common to
# %dist_common if we think we need to. If the file appears in our
# directory, we would have discovered it already, so we don't
# check that. But if the file is in a subdir without a Makefile,
# we want to distribute it here if we are doing `.'. Ugly!
if ($relative_dir eq '.')
{
foreach my $file (split (' ' , $configure_dist_common))
{
push_dist_common ($file)
unless is_make_dir (dirname ($file));
}
}
# Files to distributed. Don't use &variable_value_as_list_recursive
# as it recursively expands `$(dist_pkgdata_DATA)' etc.
check_variable_defined_unconditionally ('DIST_COMMON');
my @dist_common = split (' ', variable_value ('DIST_COMMON', 'TRUE'));
@dist_common = uniq (sort for_dist_common (@dist_common));
pretty_print ('DIST_COMMON = ', "\t", @dist_common);
# Now that we've processed DIST_COMMON, disallow further attempts
# to set it.
$handle_dist_run = 1;
# Scan EXTRA_DIST to see if we need to distribute anything from a
# subdir. If so, add it to the list. I didn't want to do this
# originally, but there were so many requests that I finally
# relented.
if (variable_defined ('EXTRA_DIST'))
{
# FIXME: This should be fixed to work with conditionals. That
# will require only making the entries in %dist_dirs under the
# appropriate condition. This is meaningful if the nature of
# the distribution should depend upon the configure options
# used.
foreach (&variable_value_as_list_recursive ('EXTRA_DIST', ''))
{
next if /^\@.*\@$/;
next unless s,/+[^/]+$,,;
$dist_dirs{$_} = 1
unless $_ eq '.';
}
}
# We have to check DIST_COMMON for extra directories in case the
# user put a source used in AC_OUTPUT into a subdir.
my $topsrcdir = backname ($relative_dir);
foreach (&variable_value_as_list_recursive ('DIST_COMMON', 'all'))
{
next if /^\@.*\@$/;
s/\$\(top_srcdir\)/$topsrcdir/;
s/\$\(srcdir\)/./;
next unless s,/+[^/]+$,,;
$dist_dirs{$_} = 1
unless $_ eq '.';
}
# Rule to check whether a distribution is viable.
my %transform = ('DISTCHECK-HOOK' => &target_defined ('distcheck-hook'),
'GETTEXT' => $seen_gettext && !$seen_gettext_external);
# Prepend $(distdir) to each directory given.
my %rewritten = map { '$(distdir)/' . "$_" => 1 } keys %dist_dirs;
$transform{'DISTDIRS'} = join (' ', sort keys %rewritten);
# If we have SUBDIRS, create all dist subdirectories and do
# recursive build.
if (variable_defined ('SUBDIRS'))
{
# If SUBDIRS is conditionally defined, then set DIST_SUBDIRS
# to all possible directories, and use it. If DIST_SUBDIRS is
# defined, just use it.
my $dist_subdir_name;
# Note that we check DIST_SUBDIRS first on purpose. At least
# one project uses so many conditional subdirectories that
# calling variable_conditionally_defined on SUBDIRS will cause
# automake to grow to 150Mb. Sigh.
if (variable_defined ('DIST_SUBDIRS')
|| variable_conditionally_defined ('SUBDIRS'))
{
$dist_subdir_name = 'DIST_SUBDIRS';
if (! variable_defined ('DIST_SUBDIRS'))
{
define_pretty_variable
('DIST_SUBDIRS', '',
uniq (&variable_value_as_list_recursive ('SUBDIRS', 'all')));
}
}
else
{
$dist_subdir_name = 'SUBDIRS';
# We always define this because that is what `distclean'
# wants.
define_pretty_variable ('DIST_SUBDIRS', '', '$(SUBDIRS)');
}
$transform{'DIST_SUBDIR_NAME'} = $dist_subdir_name;
}
# If the target `dist-hook' exists, make sure it is run. This
# allows users to do random weird things to the distribution
# before it is packaged up.
push (@dist_targets, 'dist-hook')
if &target_defined ('dist-hook');
$transform{'DIST-TARGETS'} = join(' ', @dist_targets);
# Defining $(DISTDIR).
$transform{'DISTDIR'} = !variable_defined('distdir');
$transform{'TOP_DISTDIR'} = backname ($relative_dir);
$output_rules .= &file_contents ('distdir', %transform);
}
# Handle subdirectories.
sub handle_subdirs
{
return
unless variable_defined ('SUBDIRS');
my @subdirs = &variable_value_as_list_recursive ('SUBDIRS', 'all');
my @dsubdirs = ();
@dsubdirs = &variable_value_as_list_recursive ('DIST_SUBDIRS', 'all')
if variable_defined ('DIST_SUBDIRS');
# If an `obj/' directory exists, BSD make will enter it before
# reading `Makefile'. Hence the `Makefile' in the current directory
# will not be read.
#
# % cat Makefile
# all:
# echo Hello
# % cat obj/Makefile
# all:
# echo World
# % make # GNU make
# echo Hello
# Hello
# % pmake # BSD make
# echo World
# World
msg_var ('portability', 'SUBDIRS',
"naming a subdirectory `obj' causes troubles with BSD make")
if grep ($_ eq 'obj', @subdirs);
msg_var ('portability', 'DIST_SUBDIRS',
"naming a subdirectory `obj' causes troubles with BSD make")
if grep ($_ eq 'obj', @dsubdirs);
# Make sure each directory mentioned in SUBDIRS actually exists.
foreach my $dir (@subdirs)
{
# Skip directories substituted by configure.
next if $dir =~ /^\@.*\@$/;
if (! -d $am_relative_dir . '/' . $dir)
{
err_var ('SUBDIRS', "required directory $am_relative_dir/$dir "
. "does not exist");
next;
}
err_var 'SUBDIRS', "directory should not contain `/'"
if $dir =~ /\//;
}
$output_rules .= &file_contents ('subdirs');
variable_pretty_output ('RECURSIVE_TARGETS', 'TRUE');
}
# ($REGEN, @DEPENDENCIES)
# &scan_aclocal_m4
# ----------------
# If aclocal.m4 creation is automated, return the list of its dependencies.
sub scan_aclocal_m4
{
my $regen_aclocal = 0;
if (-f 'aclocal.m4')
{
# When using aclocal.m4, define this variable even in subdirectories,
# because every Makefile.in depends on $(ACLOCAL_M4).
&define_variable ("ACLOCAL_M4", '$(top_srcdir)/aclocal.m4');
}
return (0, ())
unless $relative_dir eq '.';
&examine_variable ('CONFIG_STATUS_DEPENDENCIES');
&examine_variable ('CONFIGURE_DEPENDENCIES');
if (-f 'aclocal.m4')
{
&push_dist_common ('aclocal.m4');
my $aclocal = new Automake::XFile "< aclocal.m4";
my $line = $aclocal->getline;
$regen_aclocal = $line =~ 'generated automatically by aclocal';
}
my @ac_deps = ();
if (-f 'acinclude.m4')
{
$regen_aclocal = 1;
push @ac_deps, 'acinclude.m4';
}
if (variable_defined ('ACLOCAL_M4_SOURCES'))
{
push (@ac_deps, '$(ACLOCAL_M4_SOURCES)');
}
elsif (variable_defined ('ACLOCAL_AMFLAGS'))
{
# Scan all -I directories for m4 files. These are our
# dependencies.
my $examine_next = 0;
foreach my $amdir (&variable_value_as_list_recursive ('ACLOCAL_AMFLAGS', ''))
{
if ($examine_next)
{
$examine_next = 0;
if ($amdir !~ /^\// && -d $amdir)
{
foreach my $ac_dep (&my_glob ($amdir . '/*.m4'))
{
$ac_dep =~ s/^\.\/+//;
push (@ac_deps, $ac_dep)
unless $ac_dep eq "aclocal.m4"
|| $ac_dep eq "acinclude.m4";
}
}
}
elsif ($amdir eq '-I')
{
$examine_next = 1;
}
}
}
# Note that it might be possible that aclocal.m4 doesn't exist but
# should be auto-generated. This case probably isn't very
# important.
return ($regen_aclocal, @ac_deps);
}
# @DEPENDENCY
# &rewrite_inputs_into_dependencies ($ADD_SRCDIR, @INPUTS)
# --------------------------------------------------------
# Rewrite a list of input files into a form suitable to put on a
# dependency list. The idea is that if an input file has a directory
# part the same as the current directory, then the directory part is
# simply removed. But if the directory part is different, then
# $(top_srcdir) is prepended. Among other things, this is used to
# generate the dependency list for the output files generated by
# AC_OUTPUT. Consider what the dependencies should look like in this
# case:
# AC_OUTPUT(src/out:src/in1:lib/in2)
# The first argument, ADD_SRCDIR, is 1 if $(top_srcdir) should be added.
# If 0 then files that require this addition will simply be ignored.
sub rewrite_inputs_into_dependencies ($@)
{
my ($add_srcdir, @inputs) = @_;
my @newinputs;
foreach my $single (@inputs)
{
if (dirname ($single) eq $relative_dir)
{
push (@newinputs, basename ($single));
}
elsif ($add_srcdir)
{
push (@newinputs, '$(top_srcdir)/' . $single);
}
}
return @newinputs;
}
# Handle remaking and configure stuff.
# We need the name of the input file, to do proper remaking rules.
sub handle_configure
{
my ($local, $input, @secondary_inputs) = @_;
my $input_base = basename ($input);
my $local_base = basename ($local);
my $amfile = $input_base . '.am';
# We know we can always add '.in' because it really should be an
# error if the .in was missing originally.
my $infile = '$(srcdir)/' . $input_base . '.in';
my $colon_infile = '';
if ($local ne $input || @secondary_inputs)
{
$colon_infile = ':' . $input . '.in';
}
$colon_infile .= ':' . join (':', @secondary_inputs)
if @secondary_inputs;
my @rewritten = rewrite_inputs_into_dependencies (1, @secondary_inputs);
my ($regen_aclocal_m4, @aclocal_m4_deps) = scan_aclocal_m4 ();
$output_rules .=
&file_contents ('configure',
('MAKEFILE'
=> $local_base,
'MAKEFILE-DEPS'
=> "@rewritten",
'CONFIG-MAKEFILE'
=> ($relative_dir eq '.') ? '$@' : '$(subdir)/$@',
'MAKEFILE-IN'
=> $infile,
'MAKEFILE-IN-DEPS'
=> "@include_stack",
'MAKEFILE-AM'
=> $amfile,
'STRICTNESS'
=> $cygnus_mode ? 'cygnus' : $strictness_name,
'USE-DEPS'
=> $cmdline_use_dependencies ? '' : ' --ignore-deps',
'MAKEFILE-AM-SOURCES'
=> "$input$colon_infile",
'REGEN-ACLOCAL-M4'
=> $regen_aclocal_m4,
'ACLOCAL_M4_DEPS'
=> "@aclocal_m4_deps"));
if ($relative_dir eq '.')
{
&push_dist_common ('acconfig.h')
if -f 'acconfig.h';
}
# If we have a configure header, require it.
my $hdr_index = 0;
my @distclean_config;
foreach my $spec (@config_headers)
{
$hdr_index += 1;
# $CONFIG_H_PATH: config.h from top level.
my ($config_h_path, @ins) = split_config_file_spec ($spec);
my $config_h_dir = dirname ($config_h_path);
# If the header is in the current directory we want to build
# the header here. Otherwise, if we're at the topmost
# directory and the header's directory doesn't have a
# Makefile, then we also want to build the header.
if ($relative_dir eq $config_h_dir
|| ($relative_dir eq '.' && ! &is_make_dir ($config_h_dir)))
{
my ($cn_sans_dir, $stamp_dir);
if ($relative_dir eq $config_h_dir)
{
$cn_sans_dir = basename ($config_h_path);
$stamp_dir = '';
}
else
{
$cn_sans_dir = $config_h_path;
if ($config_h_dir eq '.')
{
$stamp_dir = '';
}
else
{
$stamp_dir = $config_h_dir . '/';
}
}
# Compute relative path from directory holding output
# header to directory holding input header. FIXME:
# doesn't handle case where we have multiple inputs.
my $in0_sans_dir;
if (dirname ($ins[0]) eq $relative_dir)
{
$in0_sans_dir = basename ($ins[0]);
}
else
{
$in0_sans_dir = backname ($relative_dir) . '/' . $ins[0];
}
require_file ($config_header_location, FOREIGN, $in0_sans_dir);
# Header defined and in this directory.
my @files;
if (-f $config_h_path . '.top')
{
push (@files, "$cn_sans_dir.top");
}
if (-f $config_h_path . '.bot')
{
push (@files, "$cn_sans_dir.bot");
}
push_dist_common (@files);
# For now, acconfig.h can only appear in the top srcdir.
if (-f 'acconfig.h')
{
push (@files, '$(top_srcdir)/acconfig.h');
}
my $stamp = "${stamp_dir}stamp-h${hdr_index}";
$output_rules .=
file_contents ('remake-hdr',
('FILES' => "@files",
'CONFIG_H' => $cn_sans_dir,
'CONFIG_HIN' => $in0_sans_dir,
'CONFIG_H_PATH' => $config_h_path,
'STAMP' => "$stamp"));
push @distclean_config, $cn_sans_dir, $stamp;
}
}
$output_rules .= file_contents ('clean-hdr',
('FILES' => "@distclean_config"))
if @distclean_config;
# Set location of mkinstalldirs.
define_variable ('mkinstalldirs',
('$(SHELL) ' . $config_aux_dir . '/mkinstalldirs'));
reject_var ('CONFIG_HEADER',
"`CONFIG_HEADER' is an anachronism; now determined "
. "automatically\nfrom `$configure_ac'");
my @config_h;
foreach my $spec (@config_headers)
{
my ($out, @ins) = split_config_file_spec ($spec);
# Generate CONFIG_HEADER define.
if ($relative_dir eq dirname ($out))
{
push @config_h, basename ($out);
}
else
{
push @config_h, "\$(top_builddir)/$out";
}
}
define_variable ("CONFIG_HEADER", "@config_h")
if @config_h;
# Now look for other files in this directory which must be remade
# by config.status, and generate rules for them.
my @actual_other_files = ();
foreach my $lfile (@other_input_files)
{
my $file;
my @inputs;
if ($lfile =~ /^([^:]*):(.*)$/)
{
# This is the ":" syntax of AC_OUTPUT.
$file = $1;
@inputs = split (':', $2);
}
else
{
# Normal usage.
$file = $lfile;
@inputs = $file . '.in';
}
# Automake files should not be stored in here, but in %MAKE_LIST.
prog_error "$lfile in \@other_input_files"
if -f $file . '.am';
my $local = basename ($file);
# Make sure the dist directory for each input file is created.
# We only have to do this at the topmost level though. This
# is a bit ugly but it easier than spreading out the logic,
# especially in cases like AC_OUTPUT(foo/out:bar/in), where
# there is no Makefile in bar/.
if ($relative_dir eq '.')
{
foreach (@inputs)
{
$dist_dirs{dirname ($_)} = 1;
}
}
# We skip files that aren't in this directory. However, if
# the file's directory does not have a Makefile, and we are
# currently doing `.', then we create a rule to rebuild the
# file in the subdir.
my $fd = dirname ($file);
if ($fd ne $relative_dir)
{
if ($relative_dir eq '.' && ! &is_make_dir ($fd))
{
$local = $file;
}
else
{
next;
}
}
my @rewritten_inputs = rewrite_inputs_into_dependencies (1, @inputs);
$output_rules .= ($local . ': '
. '$(top_builddir)/config.status '
. "@rewritten_inputs\n"
. "\t"
. 'cd $(top_builddir) && '
. '$(SHELL) ./config.status '
. ($relative_dir eq '.' ? '' : '$(subdir)/')
. '$@'
. "\n");
push (@actual_other_files, $local);
# Require all input files.
require_file ($ac_config_files_location, FOREIGN,
rewrite_inputs_into_dependencies (0, @inputs));
}
# These files get removed by "make clean".
define_pretty_variable ('CONFIG_CLEAN_FILES', '', @actual_other_files);
}
# Handle C headers.
sub handle_headers
{
my @r = &am_install_var ('-defaultdist', 'header', 'HEADERS', 'include',
'oldinclude', 'pkginclude',
'noinst', 'check');
foreach (@r)
{
next unless /\..*$/;
&saw_extension ($&);
}
}
sub handle_gettext
{
return if ! $seen_gettext || $relative_dir ne '.';
if (! variable_defined ('SUBDIRS'))
{
err_ac "AM_GNU_GETTEXT used but SUBDIRS not defined";
return;
}
# Perform some sanity checks to help users get the right setup.
# We disable these tests when po/ doesn't exist in order not to disallow
# unusual gettext setups.
#
# Bruno Haible:
# | The idea is:
# |
# | 1) If a package doesn't have a directory po/ at top level, it
# | will likely have multiple po/ directories in subpackages.
# |
# | 2) It is useful to warn for the absence of intl/ if AM_GNU_GETTEXT
# | is used without 'external'. It is also useful to warn for the
# | presence of intl/ if AM_GNU_GETTEXT([external]) is used. Both
# | warnings apply only to the usual layout of packages, therefore
# | they should both be disabled if no po/ directory is found at
# | top level.
if (-d 'po')
{
my @subdirs = &variable_value_as_list_recursive ('SUBDIRS', 'all');
msg_var ('syntax', 'SUBDIRS',
"AM_GNU_GETTEXT used but `po' not in SUBDIRS")
if ! grep ($_ eq 'po', @subdirs);
# intl/ is not required when AM_GNU_GETTEXT is called with
# the `external' option.
msg_var ('syntax', 'SUBDIRS',
"AM_GNU_GETTEXT used but `intl' not in SUBDIRS")
if (! $seen_gettext_external
&& ! grep ($_ eq 'intl', @subdirs));
# intl/ should not be used with AM_GNU_GETTEXT([external])
msg_var ('syntax', 'SUBDIRS',
"`intl' should not be in SUBDIRS when "
. "AM_GNU_GETTEXT([external]) is used")
if ($seen_gettext_external && grep ($_ eq 'intl', @subdirs));
}
require_file ($ac_gettext_location, GNU, 'ABOUT-NLS');
}
# Handle footer elements.
sub handle_footer
{
# NOTE don't use define_pretty_variable here, because
# $contents{...} is already defined.
$output_vars .= 'SOURCES = ' . variable_value ('SOURCES') . "\n\n"
if variable_value ('SOURCES');
reject_target ('.SUFFIXES',
"use variable `SUFFIXES', not target `.SUFFIXES'");
# Note: AIX 4.1 /bin/make will fail if any suffix rule appears
# before .SUFFIXES. So we make sure that .SUFFIXES appears before
# anything else, by sticking it right after the default: target.
$output_header .= ".SUFFIXES:\n";
if (@suffixes || variable_defined ('SUFFIXES'))
{
# Make sure suffixes has unique elements. Sort them to ensure
# the output remains consistent. However, $(SUFFIXES) is
# always at the start of the list, unsorted. This is done
# because make will choose rules depending on the ordering of
# suffixes, and this lets the user have some control. Push
# actual suffixes, and not $(SUFFIXES). Some versions of make
# do not like variable substitutions on the .SUFFIXES line.
my @user_suffixes = (variable_defined ('SUFFIXES')
? &variable_value_as_list_recursive ('SUFFIXES', '')
: ());
my %suffixes = map { $_ => 1 } @suffixes;
delete @suffixes{@user_suffixes};
$output_header .= (".SUFFIXES: "
. join (' ', @user_suffixes, sort keys %suffixes)
. "\n");
}
$output_trailer .= file_contents ('footer');
}
# Generate `make install' rules.
sub handle_install ()
{
$output_rules .= &file_contents
('install',
maybe_BUILT_SOURCES => (variable_defined ('BUILT_SOURCES')
? (" \$(BUILT_SOURCES)\n"
. "\t\$(MAKE) \$(AM_MAKEFLAGS)")
: ''),
'installdirs-local' => (target_defined ('installdirs-local')
? ' installdirs-local' : ''),
am__installdirs => variable_value ('am__installdirs') || '');
}
# Deal with all and all-am.
sub handle_all ($)
{
my ($makefile) = @_;
# Output `all-am'.
# Put this at the beginning for the sake of non-GNU makes. This
# is still wrong if these makes can run parallel jobs. But it is
# right enough.
unshift (@all, basename ($makefile));
foreach my $spec (@config_headers)
{
my ($out, @ins) = split_config_file_spec ($spec);
push (@all, basename ($out))
if dirname ($out) eq $relative_dir;
}
# Install `all' hooks.
if (&target_defined ("all-local"))
{
push (@all, "all-local");
&depend ('.PHONY', "all-local");
}
&pretty_print_rule ("all-am:", "\t\t", @all);
&depend ('.PHONY', 'all-am', 'all');
# Output `all'.
my @local_headers = ();
push @local_headers, '$(BUILT_SOURCES)'
if variable_defined ('BUILT_SOURCES');
foreach my $spec (@config_headers)
{
my ($out, @ins) = split_config_file_spec ($spec);
push @local_headers, basename ($out)
if dirname ($out) eq $relative_dir;
}
if (@local_headers)
{
# We need to make sure config.h is built before we recurse.
# We also want to make sure that built sources are built
# before any ordinary `all' targets are run. We can't do this
# by changing the order of dependencies to the "all" because
# that breaks when using parallel makes. Instead we handle
# things explicitly.
$output_all .= ("all: @local_headers"
. "\n\t"
. '$(MAKE) $(AM_MAKEFLAGS) '
. (variable_defined ('SUBDIRS')
? 'all-recursive' : 'all-am')
. "\n\n");
}
else
{
$output_all .= "all: " . (variable_defined ('SUBDIRS')
? 'all-recursive' : 'all-am') . "\n\n";
}
}
# Handle check merge target specially.
sub do_check_merge_target
{
if (&target_defined ('check-local'))
{
# User defined local form of target. So include it.
push (@check_tests, 'check-local');
&depend ('.PHONY', 'check-local');
}
# In --cygnus mode, check doesn't depend on all.
if ($cygnus_mode)
{
# Just run the local check rules.
&pretty_print_rule ('check-am:', "\t\t", @check);
}
else
{
# The check target must depend on the local equivalent of
# `all', to ensure all the primary targets are built. Then it
# must build the local check rules.
$output_rules .= "check-am: all-am\n";
&pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
@check)
if @check;
}
&pretty_print_rule ("\t\$(MAKE) \$(AM_MAKEFLAGS)", "\t ",
@check_tests)
if @check_tests;
&depend ('.PHONY', 'check', 'check-am');
# Handle recursion. We have to honor BUILT_SOURCES like for `all:'.
$output_rules .= ("check: "
. (variable_defined ('BUILT_SOURCES')
? "\$(BUILT_SOURCES)\n\t\$(MAKE) \$(AM_MAKEFLAGS) "
: '')
. (variable_defined ('SUBDIRS')
? 'check-recursive' : 'check-am')
. "\n");
}
# Handle all 'clean' targets.
sub handle_clean
{
# Clean the files listed in user variables if they exist.
$clean_files{'$(MOSTLYCLEANFILES)'} = MOSTLY_CLEAN
if variable_defined ('MOSTLYCLEANFILES');
$clean_files{'$(CLEANFILES)'} = CLEAN
if variable_defined ('CLEANFILES');
$clean_files{'$(DISTCLEANFILES)'} = DIST_CLEAN
if variable_defined ('DISTCLEANFILES');
$clean_files{'$(MAINTAINERCLEANFILES)'} = MAINTAINER_CLEAN
if variable_defined ('MAINTAINERCLEANFILES');
# Built sources are automatically removed by maintainer-clean.
$clean_files{'$(BUILT_SOURCES)'} = MAINTAINER_CLEAN
if variable_defined ('BUILT_SOURCES');
# Compute a list of "rm"s to run for each target.
my %rms = (MOSTLY_CLEAN, [],
CLEAN, [],
DIST_CLEAN, [],
MAINTAINER_CLEAN, []);
foreach my $file (keys %clean_files)
{
my $when = $clean_files{$file};
prog_error 'invalid entry in %clean_files'
unless exists $rms{$when};
my $rm = "rm -f $file";
# If file is a variable, make sure when don't call `rm -f' without args.
$rm ="test -z \"$file\" || $rm"
if ($file =~ /^\s*\$(\(.*\)|\{.*\})\s*$/);
push @{$rms{$when}}, "\t-$rm\n";
}
$output_rules .= &file_contents
('clean',
MOSTLYCLEAN_RMS => join ('', @{$rms{&MOSTLY_CLEAN}}),
CLEAN_RMS => join ('', @{$rms{&CLEAN}}),
DISTCLEAN_RMS => join ('', @{$rms{&DIST_CLEAN}}),
MAINTAINER_CLEAN_RMS => join ('', @{$rms{&MAINTAINER_CLEAN}}));
}
# &depend ($CATEGORY, @DEPENDEES)
# -------------------------------
# The target $CATEGORY depends on @DEPENDEES.
sub depend
{
my ($category, @dependees) = @_;
{
push (@{$dependencies{$category}}, @dependees);
}
}
# &target_cmp ($A, $B)
# --------------------
# Subroutine for &handle_factored_dependencies to let `.PHONY' be last.
sub target_cmp
{
return 0
if $a eq $b;
return -1
if $b eq '.PHONY';
return 1
if $a eq '.PHONY';
return $a cmp $b;
}
# &handle_factored_dependencies ()
# --------------------------------
# Handle everything related to gathered targets.
sub handle_factored_dependencies
{
# Reject bad hooks.
foreach my $utarg ('uninstall-data-local', 'uninstall-data-hook',
'uninstall-exec-local', 'uninstall-exec-hook')
{
my $x = $utarg;
$x =~ s/(data|exec)-//;
reject_target ($utarg, "use `$x', not `$utarg'");
}
reject_target ('install-local',
"use `install-data-local' or `install-exec-local', "
. "not `install-local'");
reject_target ('install-info-local',
"`install-info-local' target defined but "
. "`no-installinfo' option not in use")
unless defined $options{'no-installinfo'};
# Install the -local hooks.
foreach (keys %dependencies)
{
# Hooks are installed on the -am targets.
s/-am$// or next;
if (&target_defined ("$_-local"))
{
depend ("$_-am", "$_-local");
&depend ('.PHONY', "$_-local");
}
}
# Install the -hook hooks.
# FIXME: Why not be as liberal as we are with -local hooks?
foreach ('install-exec', 'install-data', 'uninstall')
{
if (&target_defined ("$_-hook"))
{
$actions{"$_-am"} .=
("\t\@\$(NORMAL_INSTALL)\n"
. "\t" . '$(MAKE) $(AM_MAKEFLAGS) ' . "$_-hook\n");
}
}
# All the required targets are phony.
depend ('.PHONY', keys %required_targets);
# Actually output gathered targets.
foreach (sort target_cmp keys %dependencies)
{
# If there is nothing about this guy, skip it.
next
unless (@{$dependencies{$_}}
|| $actions{$_}
|| $required_targets{$_});
&pretty_print_rule ("$_:", "\t",
uniq (sort @{$dependencies{$_}}));
$output_rules .= $actions{$_}
if defined $actions{$_};
$output_rules .= "\n";
}
}
# &handle_tests_dejagnu ()
# ------------------------
sub handle_tests_dejagnu
{
push (@check_tests, 'check-DEJAGNU');
$output_rules .= file_contents ('dejagnu');
}
# Handle TESTS variable and other checks.
sub handle_tests
{
if (defined $options{'dejagnu'})
{
&handle_tests_dejagnu;
}
else
{
foreach my $c ('DEJATOOL', 'RUNTEST', 'RUNTESTFLAGS')
{
reject_var ($c, "`$c' defined but `dejagnu' not in "
. "`AUTOMAKE_OPTIONS'");
}
}
if (variable_defined ('TESTS'))
{
push (@check_tests, 'check-TESTS');
$output_rules .= &file_contents ('check');
}
}
# Handle Emacs Lisp.
sub handle_emacs_lisp
{
my @elfiles = &am_install_var ('-candist', 'lisp', 'LISP',
'lisp', 'noinst');
return if ! @elfiles;
# Generate .elc files.
my @elcfiles = map { $_ . 'c' } @elfiles;
define_pretty_variable ('ELCFILES', '', @elcfiles);
define_pretty_variable ('am__ELFILES', '', @elfiles);
# Do not depend on the build rules if ELCFILES is empty.
# This is necessary because overriding ELCFILES= is a documented
# idiom to disable byte-compilation.
if (variable_value ('ELCFILES'))
{
# It's important that all depends on elc-stamp so that
# all .elc files get recompiled whenever a .el changes.
# It's important that all depends on $(ELCFILES) so that
# we can recover if any of them is deleted.
push (@all, 'elc-stamp', '$(ELCFILES)');
}
require_variables ("$am_file.am", "Emacs Lisp sources seen", 'TRUE',
'EMACS', 'lispdir');
require_conf_file ("$am_file.am", FOREIGN, 'elisp-comp');
&define_variable ('elisp_comp', $config_aux_dir . '/elisp-comp');
}
# Handle Python
sub handle_python
{
my @pyfiles = &am_install_var ('-defaultdist', 'python', 'PYTHON',
'noinst');
return if ! @pyfiles;
require_variables ("$am_file.am", "Python sources seen", 'TRUE',
'PYTHON');
require_conf_file ("$am_file.am", FOREIGN, 'py-compile');
&define_variable ('py_compile', $config_aux_dir . '/py-compile');
}
# Handle Java.
sub handle_java
{
my @sourcelist = &am_install_var ('-candist',
'java', 'JAVA',
'java', 'noinst', 'check');
return if ! @sourcelist;
my @prefix = am_primary_prefixes ('JAVA', 1,
'java', 'noinst', 'check');
my $dir;
foreach my $curs (@prefix)
{
next
if $curs eq 'EXTRA';
err_var "${curs}_JAVA", "multiple _JAVA primaries in use"
if defined $dir;
$dir = $curs;
}
push (@all, 'class' . $dir . '.stamp');
}
# Handle some of the minor options.
sub handle_minor_options
{
if (defined $options{'readme-alpha'})
{
if ($relative_dir eq '.')
{
if ($package_version !~ /^$GNITS_VERSION_PATTERN$/)
{
msg ('error-gnits', $package_version_location,
"version `$package_version' doesn't follow " .
"Gnits standards");
}
if (defined $1 && -f 'README-alpha')
{
# This means we have an alpha release. See
# GNITS_VERSION_PATTERN for details.
push_dist_common ('README-alpha');
}
}
}
}
################################################################
# ($OUTPUT, @INPUTS)
# &split_config_file_spec ($SPEC)
# -------------------------------
# Decode the Autoconf syntax for config files (files, headers, links
# etc.).
sub split_config_file_spec ($)
{
my ($spec) = @_;
my ($output, @inputs) = split (/:/, $spec);
push @inputs, "$output.in"
unless @inputs;
return ($output, @inputs);
}
my %make_list;
# &scan_autoconf_config_files ($CONFIG-FILES)
# -------------------------------------------
# Study $CONFIG-FILES which is the first argument to AC_CONFIG_FILES
# (or AC_OUTPUT).
sub scan_autoconf_config_files
{
my ($config_files) = @_;
# Look at potential Makefile.am's.
foreach (split ' ', $config_files)
{
# Must skip empty string for Perl 4.
next if $_ eq "\\" || $_ eq '';
# Handle $local:$input syntax. Note that we ignore
# every input file past the first, though we keep
# those around for later.
my ($local, $input, @rest) = split (/:/);
if (! $input)
{
$input = $local;
}
else
{
# FIXME: should be error if .in is missing.
$input =~ s/\.in$//;
}
if (-f $input . '.am')
{
# We have a file that automake should generate.
$make_list{$input} = join (':', ($local, @rest));
}
else
{
# We have a file that automake should cause to be
# rebuilt, but shouldn't generate itself.
push (@other_input_files, $_);
}
}
}
# &scan_autoconf_traces ($FILENAME)
# ---------------------------------
sub scan_autoconf_traces ($)
{
my ($filename) = @_;
my %traced = (
AC_CANONICAL_HOST => 0,
AC_CANONICAL_SYSTEM => 0,
AC_CONFIG_AUX_DIR => 1,
AC_CONFIG_FILES => 1,
AC_CONFIG_HEADERS => 1,
AC_INIT => 0,
AC_LIBSOURCE => 1,
AC_SUBST => 1,
AM_AUTOMAKE_VERSION => 1,
AM_CONDITIONAL => 2,
AM_ENABLE_MULTILIB => 0,
AM_GNU_GETTEXT => 0,
AM_INIT_AUTOMAKE => 0,
AM_MAINTAINER_MODE => 0,
AM_PROG_CC_C_O => 0,
);
my $traces = ($ENV{AUTOCONF} || 'autoconf') . " ";
# Use a separator unlikely to be used, not `:', the default, which
# has a precise meaning for AC_CONFIG_FILES and so on.
$traces .= join (' ',
map { "--trace=$_" . ':\$f:\$l::\$n::\${::}%' }
(keys %traced));
my $tracefh = new Automake::XFile ("$traces $filename |");
verb "reading $traces";
while ($_ = $tracefh->getline)
{
chomp;
my ($here, @args) = split /::/;
my $macro = $args[0];
prog_error ("unrequested trace `$macro'")
unless exists $traced{$macro};
# Skip and diagnose malformed calls.
if ($#args < $traced{$macro})
{
msg ('syntax', $here, "not enough arguments for $macro");
next;
}
# Alphabetical ordering please.
if ($macro eq 'AC_CANONICAL_HOST')
{
if (! $seen_canonical)
{
$seen_canonical = AC_CANONICAL_HOST;
$canonical_location = $here;
};
}
elsif ($macro eq 'AC_CANONICAL_SYSTEM')
{
$seen_canonical = AC_CANONICAL_SYSTEM;
$canonical_location = $here;
}
elsif ($macro eq 'AC_CONFIG_AUX_DIR')
{
@config_aux_path = $args[1];
$config_aux_dir_set_in_configure_in = 1;
}
elsif ($macro eq 'AC_CONFIG_FILES')
{
# Look at potential Makefile.am's.
$ac_config_files_location = $here;
&scan_autoconf_config_files ($args[1]);
}
elsif ($macro eq 'AC_CONFIG_HEADERS')
{
$config_header_location = $here;
push @config_headers, split (' ', $args[1]);
}
elsif ($macro eq 'AC_INIT')
{
if (defined $args[2])
{
$package_version = $args[2];
$package_version_location = $here;
}
}
elsif ($macro eq 'AC_LIBSOURCE')
{
$libsources{$args[1]} = $here;
}
elsif ($macro eq 'AC_SUBST')
{
# Just check for alphanumeric in AC_SUBST. If you do
# AC_SUBST(5), then too bad.
$configure_vars{$args[1]} = $here
if $args[1] =~ /^\w+$/;
}
elsif ($macro eq 'AM_AUTOMAKE_VERSION')
{
error ($here,
"version mismatch. This is Automake $VERSION,\n" .
"but the definition used by this AM_INIT_AUTOMAKE\n" .
"comes from Automake $args[1]. You should recreate\n" .
"aclocal.m4 with aclocal and run automake again.\n")
if $VERSION ne $args[1];
$seen_automake_version = 1;
}
elsif ($macro eq 'AM_CONDITIONAL')
{
$configure_cond{$args[1]} = $here;
}
elsif ($macro eq 'AM_ENABLE_MULTILIB')
{
$seen_multilib = $here;
}
elsif ($macro eq 'AM_GNU_GETTEXT')
{
$seen_gettext = $here;
$ac_gettext_location = $here;
$seen_gettext_external = grep ($_ eq 'external', @args);
}
elsif ($macro eq 'AM_INIT_AUTOMAKE')
{
$seen_init_automake = $here;
if (defined $args[2])
{
$package_version = $args[2];
$package_version_location = $here;
}
elsif (defined $args[1])
{
$global_options = $args[1];
}
}
elsif ($macro eq 'AM_MAINTAINER_MODE')
{
$seen_maint_mode = $here;
}
elsif ($macro eq 'AM_PROG_CC_C_O')
{
$seen_cc_c_o = $here;
}
}
}
# &scan_autoconf_files ()
# -----------------------
# Check whether we use `configure.ac' or `configure.in'.
# Scan it (and possibly `aclocal.m4') for interesting things.
# We must scan aclocal.m4 because there might be AC_SUBSTs and such there.
sub scan_autoconf_files
{
# Reinitialize libsources here. This isn't really necessary,
# since we currently assume there is only one configure.ac. But
# that won't always be the case.
%libsources = ();
$configure_ac = find_configure_ac;
fatal "`configure.ac' or `configure.in' is required\n"
if !$configure_ac;
scan_autoconf_traces ($configure_ac);
# Set input and output files if not specified by user.
if (! @input_files)
{
@input_files = sort keys %make_list;
%output_files = %make_list;
}
@configure_input_files = sort keys %make_list;
if (! $seen_init_automake)
{
err_ac ("no proper invocation of AM_INIT_AUTOMAKE was found.\nYou "
. "should verify that $configure_ac invokes AM_INIT_AUTOMAKE,"
. "\nthat aclocal.m4 is present in the top-level directory,\n"
. "and that aclocal.m4 was recently regenerated "
. "(using aclocal).");
}
else
{
if (! $seen_automake_version)
{
if (-f 'aclocal.m4')
{
error ($seen_init_automake,
"your implementation of AM_INIT_AUTOMAKE comes from " .
"an\nold Automake version. You should recreate " .
"aclocal.m4\nwith aclocal and run automake again.\n");
}
else
{
error ($seen_init_automake,
"no proper implementation of AM_INIT_AUTOMAKE was " .
"found,\nprobably because aclocal.m4 is missing...\n" .
"You should run aclocal to create this file, then\n" .
"run automake again.\n");
}
}
}
# Look for some files we need. Always check for these. This
# check must be done for every run, even those where we are only
# looking at a subdir Makefile. We must set relative_dir so that
# the file-finding machinery works.
# FIXME: Is this broken because it needs dynamic scopes.
# My tests seems to show it's not the case.
$relative_dir = '.';
require_conf_file ($configure_ac, FOREIGN,
'install-sh', 'mkinstalldirs', 'missing');
err_am "`install.sh' is an anachronism; use `install-sh' instead"
if -f $config_aux_path[0] . '/install.sh';
# Preserve dist_common for later.
$configure_dist_common = variable_value ('DIST_COMMON', 'TRUE') || '';
}
################################################################
# Set up for Cygnus mode.
sub check_cygnus
{
return unless $cygnus_mode;
&set_strictness ('foreign');
$options{'no-installinfo'} = $cygnus_mode;
$options{'no-dependencies'} = $cygnus_mode;
$use_dependencies = 0;
err_ac "`AM_MAINTAINER_MODE' required when --cygnus specified"
if !$seen_maint_mode;
}
# Do any extra checking for GNU standards.
sub check_gnu_standards
{
if ($relative_dir eq '.')
{
# In top level (or only) directory.
# Accept one of these three licenses; default to COPYING.
my $license = 'COPYING';
foreach (qw /COPYING.LIB COPYING.LESSER/)
{
$license = $_ if -f $_;
}
require_file ("$am_file.am", GNU, $license,
qw/INSTALL NEWS README AUTHORS ChangeLog/);
}
for my $opt ('no-installman', 'no-installinfo')
{
msg ('error-gnu', $options{$opt},
"option `$opt' disallowed by GNU standards")
if (defined $options{$opt});
}
}
# Do any extra checking for GNITS standards.
sub check_gnits_standards
{
if ($relative_dir eq '.')
{
# In top level (or only) directory.
require_file ("$am_file.am", GNITS, 'THANKS');
}
}
################################################################
#
# Functions to handle files of each language.
# Each `lang_X_rewrite($DIRECTORY, $BASE, $EXT)' function follows a
# simple formula: Return value is LANG_SUBDIR if the resulting object
# file should be in a subdir if the source file is, LANG_PROCESS if
# file is to be dealt with, LANG_IGNORE otherwise.
# Much of the actual processing is handled in
# handle_single_transform_list. These functions exist so that
# auxiliary information can be recorded for a later cleanup pass.
# Note that the calls to these functions are computed, so don't bother
# searching for their precise names in the source.
# This is just a convenience function that can be used to determine
# when a subdir object should be used.
sub lang_sub_obj
{
return defined $options{'subdir-objects'} ? LANG_SUBDIR : LANG_PROCESS;
}
# Rewrite a single C source file.
sub lang_c_rewrite
{
my ($directory, $base, $ext) = @_;
if (defined $options{'ansi2knr'} && $base =~ /_$/)
{
# FIXME: include line number in error.
err_am "C source file `$base.c' would be deleted by ansi2knr rules";
}
my $r = LANG_PROCESS;
if (defined $options{'subdir-objects'})
{
$r = LANG_SUBDIR;
$base = $directory . '/' . $base
unless $directory eq '.' || $directory eq '';
err_am ("C objects in subdir but `AM_PROG_CC_C_O' "
. "not in `$configure_ac'",
uniq_scope => US_GLOBAL)
unless $seen_cc_c_o;
require_conf_file ("$am_file.am", FOREIGN, 'compile');
# In this case we already have the directory information, so
# don't add it again.
$de_ansi_files{$base} = '';
}
else
{
$de_ansi_files{$base} = (($directory eq '.' || $directory eq '')
? ''
: "$directory/");
}
return $r;
}
# Rewrite a single C++ source file.
sub lang_cxx_rewrite
{
return &lang_sub_obj;
}
# Rewrite a single header file.
sub lang_header_rewrite
{
# Header files are simply ignored.
return LANG_IGNORE;
}
# Rewrite a single yacc file.
sub lang_yacc_rewrite
{
my ($directory, $base, $ext) = @_;
my $r = &lang_sub_obj;
(my $newext = $ext) =~ tr/y/c/;
return ($r, $newext);
}
# Rewrite a single yacc++ file.
sub lang_yaccxx_rewrite
{
my ($directory, $base, $ext) = @_;
my $r = &lang_sub_obj;
(my $newext = $ext) =~ tr/y/c/;
return ($r, $newext);
}
# Rewrite a single lex file.
sub lang_lex_rewrite
{
my ($directory, $base, $ext) = @_;
my $r = &lang_sub_obj;
(my $newext = $ext) =~ tr/l/c/;
return ($r, $newext);
}
# Rewrite a single lex++ file.
sub lang_lexxx_rewrite
{
my ($directory, $base, $ext) = @_;
my $r = &lang_sub_obj;
(my $newext = $ext) =~ tr/l/c/;
return ($r, $newext);
}
# Rewrite a single assembly file.
sub lang_asm_rewrite
{
return &lang_sub_obj;
}
# Rewrite a single Fortran 77 file.
sub lang_f77_rewrite
{
return LANG_PROCESS;
}
# Rewrite a single preprocessed Fortran 77 file.
sub lang_ppf77_rewrite
{
return LANG_PROCESS;
}
# Rewrite a single ratfor file.
sub lang_ratfor_rewrite
{
return LANG_PROCESS;
}
# Rewrite a single Objective C file.
sub lang_objc_rewrite
{
return &lang_sub_obj;
}
# Rewrite a single Java file.
sub lang_java_rewrite
{
return LANG_SUBDIR;
}
# The lang_X_finish functions are called after all source file
# processing is done. Each should handle defining rules for the
# language, etc. A finish function is only called if a source file of
# the appropriate type has been seen.
sub lang_c_finish
{
# Push all libobjs files onto de_ansi_files. We actually only
# push files which exist in the current directory, and which are
# genuine source files.
foreach my $file (keys %libsources)
{
if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
{
$de_ansi_files{$1} = ''
}
}
if (defined $options{'ansi2knr'} && keys %de_ansi_files)
{
# Make all _.c files depend on their corresponding .c files.
my @objects;
foreach my $base (sort keys %de_ansi_files)
{
# Each _.c file must depend on ansi2knr; otherwise it
# might be used in a parallel build before it is built.
# We need to support files in the srcdir and in the build
# dir (because these files might be auto-generated. But
# we can't use $< -- some makes only define $< during a
# suffix rule.
my $ansfile = $de_ansi_files{$base} . $base . '.c';
$output_rules .= ($base . "_.c: $ansfile \$(ANSI2KNR)\n\t"
. '$(CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
. '`if test -f $(srcdir)/' . $ansfile
. '; then echo $(srcdir)/' . $ansfile
. '; else echo ' . $ansfile . '; fi` '
. "| sed 's/^# \\([0-9]\\)/#line \\1/' "
. '| $(ANSI2KNR) > $@'
# If ansi2knr fails then we shouldn't
# create the _.c file
. " || rm -f \$\@\n");
push (@objects, $base . '_.$(OBJEXT)');
push (@objects, $base . '_.lo')
if variable_defined ('LIBTOOL');
}
# Make all _.o (and _.lo) files depend on ansi2knr.
# Use a sneaky little hack to make it print nicely.
&pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
}
}
# This is a yacc helper which is called whenever we have decided to
# compile a yacc file.
sub lang_yacc_target_hook
{
my ($self, $aggregate, $output, $input) = @_;
my $flag = $aggregate . "_YFLAGS";
if ((variable_defined ($flag)
&& &variable_value ($flag) =~ /$DASH_D_PATTERN/o)
|| (variable_defined ('YFLAGS')
&& &variable_value ('YFLAGS') =~ /$DASH_D_PATTERN/o))
{
(my $output_base = $output) =~ s/$KNOWN_EXTENSIONS_PATTERN$//;
my $header = $output_base . '.h';
# Found a `-d' that applies to the compilation of this file.
# Add a dependency for the generated header file, and arrange
# for that file to be included in the distribution.
# FIXME: this fails for `nodist_*_SOURCES'.
$output_rules .= ("${header}: $output\n"
# Recover from removal of $header
. "\t\@if test ! -f \$@; then \\\n"
. "\t rm -f $output; \\\n"
. "\t \$(MAKE) $output; \\\n"
. "\telse :; fi\n");
&push_dist_common ($header);
# If the files are built in the build directory, then we want
# to remove them with `make clean'. If they are in srcdir
# they shouldn't be touched. However, we can't determine this
# statically, and the GNU rules say that yacc/lex output files
# should be removed by maintainer-clean. So that's what we
# do.
$clean_files{$header} = MAINTAINER_CLEAN;
}
# Erase $OUTPUT on `make maintainer-clean' (by GNU standards).
# See the comment above for $HEADER.
$clean_files{$output} = MAINTAINER_CLEAN;
}
# This is a lex helper which is called whenever we have decided to
# compile a lex file.
sub lang_lex_target_hook
{
my ($self, $aggregate, $output, $input) = @_;
# If the files are built in the build directory, then we want to
# remove them with `make clean'. If they are in srcdir they
# shouldn't be touched. However, we can't determine this
# statically, and the GNU rules say that yacc/lex output files
# should be removed by maintainer-clean. So that's what we do.
$clean_files{$output} = MAINTAINER_CLEAN;
}
# This is a helper for both lex and yacc.
sub yacc_lex_finish_helper
{
return if defined $language_scratch{'lex-yacc-done'};
$language_scratch{'lex-yacc-done'} = 1;
# If there is more than one distinct yacc (resp lex) source file
# in a given directory, then the `ylwrap' program is required to
# allow parallel builds to work correctly. FIXME: for now, no
# line number.
require_conf_file ($configure_ac, FOREIGN, 'ylwrap');
if ($config_aux_dir_set_in_configure_in)
{
&define_variable ('YLWRAP', $config_aux_dir . "/ylwrap");
}
else
{
&define_variable ('YLWRAP', '$(top_srcdir)/ylwrap');
}
}
sub lang_yacc_finish
{
return if defined $language_scratch{'yacc-done'};
$language_scratch{'yacc-done'} = 1;
reject_var 'YACCFLAGS', "`YACCFLAGS' obsolete; use `YFLAGS' instead";
&yacc_lex_finish_helper
if count_files_for_language ('yacc') > 1;
}
sub lang_lex_finish
{
return if defined $language_scratch{'lex-done'};
$language_scratch{'lex-done'} = 1;
&yacc_lex_finish_helper
if count_files_for_language ('lex') > 1;
}
# Given a hash table of linker names, pick the name that has the most
# precedence. This is lame, but something has to have global
# knowledge in order to eliminate the conflict. Add more linkers as
# required.
sub resolve_linker
{
my (%linkers) = @_;
foreach my $l (qw(GCJLINK CXXLINK F77LINK OBJCLINK))
{
return $l if defined $linkers{$l};
}
return 'LINK';
}
# Called to indicate that an extension was used.
sub saw_extension
{
my ($ext) = @_;
if (! defined $extension_seen{$ext})
{
$extension_seen{$ext} = 1;
}
else
{
++$extension_seen{$ext};
}
}
# Return the number of files seen for a given language. Knows about
# special cases we care about. FIXME: this is hideous. We need
# something that involves real language objects. For instance yacc
# and yaccxx could both derive from a common yacc class which would
# know about the strange ylwrap requirement. (Or better yet we could
# just not support legacy yacc!)
sub count_files_for_language
{
my ($name) = @_;
my @names;
if ($name eq 'yacc' || $name eq 'yaccxx')
{
@names = ('yacc', 'yaccxx');
}
elsif ($name eq 'lex' || $name eq 'lexxx')
{
@names = ('lex', 'lexxx');
}
else
{
@names = ($name);
}
my $r = 0;
foreach $name (@names)
{
my $lang = $languages{$name};
foreach my $ext (@{$lang->extensions})
{
$r += $extension_seen{$ext}
if defined $extension_seen{$ext};
}
}
return $r
}
# Called to ask whether source files have been seen . If HEADERS is 1,
# headers can be included.
sub saw_sources_p
{
my ($headers) = @_;
# count all the sources
my $count = 0;
foreach my $val (values %extension_seen)
{
$count += $val;
}
if (!$headers)
{
$count -= count_files_for_language ('header');
}
return $count > 0;
}
# register_language (%ATTRIBUTE)
# ------------------------------
# Register a single language.
# Each %ATTRIBUTE is of the form ATTRIBUTE => VALUE.
sub register_language (%)
{
my (%option) = @_;
# Set the defaults.
$option{'ansi'} = 0
unless defined $option{'ansi'};
$option{'autodep'} = 'no'
unless defined $option{'autodep'};
$option{'linker'} = ''
unless defined $option{'linker'};
$option{'flags'} = []
unless defined $option{'flags'};
$option{'output_extensions'} = sub { return ( '.$(OBJEXT)', '.lo' ) }
unless defined $option{'output_extensions'};
my $lang = new Language (%option);
# Fill indexes.
grep ($extension_map{$_} = $lang->name, @{$lang->extensions});
$languages{$lang->name} = $lang;
# Update the pattern of known extensions.
accept_extensions (@{$lang->extensions});
# Upate the $suffix_rule map.
foreach my $suffix (@{$lang->extensions})
{
foreach my $dest (&{$lang->output_extensions} ($suffix))
{
®ister_suffix_rule ('internal', $suffix, $dest);
}
}
}
# derive_suffix ($EXT, $OBJ)
# --------------------------
# This function is used to find a path from a user-specified suffix $EXT
# to $OBJ or to some other suffix we recognize internally, eg `cc'.
sub derive_suffix ($$)
{
my ($source_ext, $obj) = @_;
while (! $extension_map{$source_ext}
&& $source_ext ne $obj
&& exists $suffix_rules->{$source_ext}
&& exists $suffix_rules->{$source_ext}{$obj})
{
$source_ext = $suffix_rules->{$source_ext}{$obj}[0];
}
return $source_ext;
}
################################################################
# Pretty-print something. HEAD is what should be printed at the
# beginning of the first line, FILL is what should be printed at the
# beginning of every subsequent line.
sub pretty_print_internal
{
my ($head, $fill, @values) = @_;
my $column = length ($head);
my $result = $head;
# Fill length is number of characters. However, each Tab
# character counts for eight. So we count the number of Tabs and
# multiply by 7.
my $fill_length = length ($fill);
$fill_length += 7 * ($fill =~ tr/\t/\t/d);
foreach (@values)
{
# "71" because we also print a space.
if ($column + length ($_) > 71)
{
$result .= " \\\n" . $fill;
$column = $fill_length;
}
$result .= ' ' if $result =~ /\S\z/;
$result .= $_;
$column += length ($_) + 1;
}
$result .= "\n";
return $result;
}
# Pretty-print something and append to output_vars.
sub pretty_print
{
$output_vars .= &pretty_print_internal (@_);
}
# Pretty-print something and append to output_rules.
sub pretty_print_rule
{
$output_rules .= &pretty_print_internal (@_);
}
################################################################
# $STRING
# &conditional_string(@COND-STACK)
# --------------------------------
# Build a string which denotes the conditional in @COND-STACK. Some
# simplifications are done: `TRUE' entries are elided, and any `FALSE'
# entry results in a return of `FALSE'.
sub conditional_string
{
my (@stack) = @_;
if (grep (/^FALSE$/, @stack))
{
return 'FALSE';
}
else
{
return join (' ', uniq sort grep (!/^TRUE$/, @stack));
}
}
# $BOOLEAN
# &conditional_true_when ($COND, $WHEN)
# -------------------------------------
# See if a conditional is true. Both arguments are conditional
# strings. This returns true if the first conditional is true when
# the second conditional is true.
# For instance with $COND = `BAR FOO', and $WHEN = `BAR BAZ FOO',
# obviously return 1, and 0 when, for instance, $WHEN = `FOO'.
sub conditional_true_when ($$)
{
my ($cond, $when) = @_;
# Make a hash holding all the values from $WHEN.
my %cond_vals = map { $_ => 1 } split (' ', $when);
# Nothing is true when FALSE (not even FALSE itself, but it
# shouldn't hurt if you decide to change that).
return 0 if exists $cond_vals{'FALSE'};
# Check each component of $cond, which looks `COND1 COND2'.
foreach my $comp (split (' ', $cond))
{
# TRUE is always true.
next if $comp eq 'TRUE';
return 0 if ! defined $cond_vals{$comp};
}
return 1;
}
# $BOOLEAN
# &conditional_is_redundant ($COND, @WHENS)
# ----------------------------------------
# Determine whether $COND is redundant with respect to @WHENS.
#
# Returns true if $COND is true for any of the conditions in @WHENS.
#
# If there are no @WHENS, then behave as if @WHENS contained a single empty
# condition.
sub conditional_is_redundant ($@)
{
my ($cond, @whens) = @_;
@whens = ("") if @whens == 0;
foreach my $when (@whens)
{
return 1 if conditional_true_when ($cond, $when);
}
return 0;
}
# $BOOLEAN
# &conditional_implies_any ($COND, @CONDS)
# ----------------------------------------
# Returns true iff $COND implies any of the conditions in @CONDS.
sub conditional_implies_any ($@)
{
my ($cond, @conds) = @_;
@conds = ("") if @conds == 0;
foreach my $c (@conds)
{
return 1 if conditional_true_when ($c, $cond);
}
return 0;
}
# $NEGATION
# condition_negate ($COND)
# ------------------------
sub condition_negate ($)
{
my ($cond) = @_;
$cond =~ s/TRUE$/TRUEO/;
$cond =~ s/FALSE$/TRUE/;
$cond =~ s/TRUEO$/FALSE/;
return $cond;
}
# Compare condition names.
# Issue them in alphabetical order, foo_TRUE before foo_FALSE.
sub by_condition
{
# Be careful we might be comparing `' or `#'.
$a =~ /^(.*)_(TRUE|FALSE)$/;
my ($aname, $abool) = ($1 || '', $2 || '');
$b =~ /^(.*)_(TRUE|FALSE)$/;
my ($bname, $bbool) = ($1 || '', $2 || '');
return ($aname cmp $bname
# Don't bother with IFs, given that TRUE is after FALSE
# just cmp in the reverse order.
|| $bbool cmp $abool
# Just in case...
|| $a cmp $b);
}
# &make_condition (@CONDITIONS)
# -----------------------------
# Transform a list of conditions (themselves can be an internal list
# of conditions, e.g., @CONDITIONS = ('cond1 cond2', 'cond3')) into a
# Make conditional (a pattern for AC_SUBST).
# Correctly returns the empty string when there are no conditions.
sub make_condition
{
my $res = conditional_string (@_);
# There are no conditions.
if ($res eq '')
{
# Nothing to do.
}
# It's impossible.
elsif ($res eq 'FALSE')
{
$res = '#';
}
# Build it.
else
{
$res = '@' . $res . '@';
$res =~ s/ /@@/g;
}
return $res;
}
## ------------------------------ ##
## Handling the condition stack. ##
## ------------------------------ ##
# $COND_STRING
# cond_stack_if ($NEGATE, $COND, $WHERE)
# --------------------------------------
sub cond_stack_if ($$$)
{
my ($negate, $cond, $where) = @_;
error $where, "$cond does not appear in AM_CONDITIONAL"
if ! $configure_cond{$cond} && $cond !~ /^TRUE|FALSE$/;
$cond = "${cond}_TRUE"
unless $cond =~ /^TRUE|FALSE$/;
$cond = condition_negate ($cond)
if $negate;
push (@cond_stack, $cond);
return conditional_string (@cond_stack);
}
# $COND_STRING
# cond_stack_else ($NEGATE, $COND, $WHERE)
# ----------------------------------------
sub cond_stack_else ($$$)
{
my ($negate, $cond, $where) = @_;
if (! @cond_stack)
{
error $where, "else without if";
return;
}
$cond_stack[$#cond_stack] = condition_negate ($cond_stack[$#cond_stack]);
# If $COND is given, check against it.
if (defined $cond)
{
$cond = "${cond}_TRUE"
unless $cond =~ /^TRUE|FALSE$/;
$cond = condition_negate ($cond)
if $negate;
error ($where, "else reminder ($negate$cond) incompatible with "
. "current conditional: $cond_stack[$#cond_stack]")
if $cond_stack[$#cond_stack] ne $cond;
}
return conditional_string (@cond_stack);
}
# $COND_STRING
# cond_stack_endif ($NEGATE, $COND, $WHERE)
# -----------------------------------------
sub cond_stack_endif ($$$)
{
my ($negate, $cond, $where) = @_;
my $old_cond;
if (! @cond_stack)
{
error $where, "endif without if: $negate$cond";
return;
}
# If $COND is given, check against it.
if (defined $cond)
{
$cond = "${cond}_TRUE"
unless $cond =~ /^TRUE|FALSE$/;
$cond = condition_negate ($cond)
if $negate;
error ($where, "endif reminder ($negate$cond) incompatible with "
. "current conditional: $cond_stack[$#cond_stack]")
if $cond_stack[$#cond_stack] ne $cond;
}
pop @cond_stack;
return conditional_string (@cond_stack);
}
## ------------------------ ##
## Handling the variables. ##
## ------------------------ ##
# check_ambiguous_conditional ($VAR, $COND, $WHERE)
# -------------------------------------------------
# Check for an ambiguous conditional. This is called when a variable
# is being defined conditionally. If we already know about a
# definition that is true under the same conditions, then we have an
# ambiguity.
sub check_ambiguous_conditional ($$$)
{
my ($var, $cond, $where) = @_;
my ($message, $ambig_cond) =
conditional_ambiguous_p ($var, $cond, keys %{$var_value{$var}});
if ($message)
{
msg 'syntax', $where, "$message ...";
msg_var ('syntax', $var, "... `$var' previously defined here.");
verb (macro_dump ($var));
}
}
# $STRING, $AMBIG_COND
# conditional_ambiguous_p ($WHAT, $COND, @CONDS)
# ----------------------------------------------
# Check for an ambiguous conditional. Return an error message and
# the other condition involved if we have one, two empty strings otherwise.
# WHAT: the thing being defined
# COND: the condition under which it is being defined
# CONDS: the conditions under which it had already been defined
sub conditional_ambiguous_p ($$@)
{
my ($var, $cond, @conds) = @_;
foreach my $vcond (@conds)
{
# Note that these rules doesn't consider the following
# example as ambiguous.
#
# if COND1
# FOO = foo
# endif
# if COND2
# FOO = bar
# endif
#
# It's up to the user to not define COND1 and COND2
# simultaneously.
my $message;
if ($vcond eq $cond)
{
return ("$var multiply defined in condition $cond", $vcond);
}
elsif (&conditional_true_when ($vcond, $cond))
{
return ("$var was already defined in condition $vcond, "
. "which implies condition $cond", $vcond);
}
elsif (&conditional_true_when ($cond, $vcond))
{
return ("$var was already defined in condition $vcond, "
. "which is implied by condition $cond", $vcond);
}
}
return ('', '');
}
# @MISSING_CONDS
# variable_not_always_defined_in_cond ($VAR, $COND)
# ---------------------------------------------
# Check whether $VAR is always defined for condition $COND.
# Return a list of conditions where the definition is missing.
#
# For instance, given
#
# if COND1
# if COND2
# A = foo
# D = d1
# else
# A = bar
# D = d2
# endif
# else
# D = d3
# endif
# if COND3
# A = baz
# B = mumble
# endif
# C = mumble
#
# we should have:
# variable_not_always_defined_in_cond ('A', 'COND1_TRUE COND2_TRUE')
# => ()
# variable_not_always_defined_in_cond ('A', 'COND1_TRUE')
# => ()
# variable_not_always_defined_in_cond ('A', 'TRUE')
# => ("COND1_FALSE COND2_FALSE COND3_FALSE",
# "COND1_FALSE COND2_TRUE COND3_FALSE",
# "COND1_TRUE COND2_FALSE COND3_FALSE",
# "COND1_TRUE COND2_TRUE COND3_FALSE")
# variable_not_always_defined_in_cond ('B', 'COND1_TRUE')
# => ("COND3_FALSE")
# variable_not_always_defined_in_cond ('C', 'COND1_TRUE')
# => ()
# variable_not_always_defined_in_cond ('D', 'TRUE')
# => ()
# variable_not_always_defined_in_cond ('Z', 'TRUE')
# => ("TRUE")
#
sub variable_not_always_defined_in_cond ($$)
{
my ($var, $cond) = @_;
# It's easy to answer if the variable is not defined.
return ("TRUE",) unless exists $var_value{$var};
# How does it work? Let's take the second example:
#
# variable_not_always_defined_in_cond ('A', 'COND1_TRUE')
#
# (1) First, we get the list of conditions where A is defined:
#
# ("COND1_TRUE COND2_TRUE", "COND1_TRUE COND2_FALSE", "COND3_TRUE")
#
# (2) Then we generate the set of inverted conditions:
#
# ("COND1_FALSE COND2_TRUE COND3_FALSE",
# "COND1_FALSE COND2_FALSE COND3_FALSE")
#
# (3) Finally we remove these conditions which are not implied by
# COND1_TRUE. This yields an empty list and we are done.
my @res = ();
my @cond_defs = keys %{$var_value{$var}}; # (1)
foreach my $icond (invert_conditions (@cond_defs)) # (2)
{
prog_error "invert_conditions returned an input condition"
if exists $var_value{$var}{$icond};
push @res, $icond
if (conditional_true_when ($cond, $icond)); # (3)
}
return @res;
}
# ¯o_define($VAR, $OWNER, $TYPE, $COND, $VALUE, $WHERE)
# -------------------------------------------------------------
# The $VAR can go from Automake to user, but not the converse.
sub macro_define ($$$$$$)
{
my ($var, $owner, $type, $cond, $value, $where) = @_;
# We will adjust the owner of this variable unless told otherwise.
my $adjust_owner = 1;
error $where, "bad characters in variable name `$var'"
if $var !~ /$MACRO_PATTERN/o;
# `:='-style assignments are not acknowledged by POSIX. Moreover it
# has multiple meanings. In GNU make or BSD make it means "assign
# with immediate expansion", while in OSF make it is used for
# conditional assignments.
msg ('portability', $where, "`:='-style assignments are not portable")
if $type eq ':';
check_variable_expansions ($value, $where);
$cond ||= 'TRUE';
# An Automake variable must be consistently defined with the same
# sign by Automake. A user variable must be set by either `=' or
# `:=', and later promoted to `+='.
if ($owner == VAR_AUTOMAKE)
{
if (exists $var_type{$var}
&& exists $var_type{$var}{$cond}
&& $var_type{$var}{$cond} ne $type)
{
error ($where, "$var was set with `$var_type{$var}=' "
. "and is now set with `$type='");
}
}
else
{
if (!exists $var_type{$var} && $type eq '+')
{
error $where, "$var must be set with `=' before using `+='";
}
}
$var_type{$var}{$cond} = $type;
# Differentiate assignment types.
# 1. append (+=) to a variable defined for current condition
if ($type eq '+' && exists $var_value{$var}{$cond})
{
if (chomp $var_value{$var}{$cond})
{
# Insert a backslash before a trailing newline.
$var_value{$var}{$cond} .= "\\\n";
}
elsif ($var_value{$var}{$cond})
{
# Insert a separator.
$var_value{$var}{$cond} .= ' ';
}
$var_value{$var}{$cond} .= $value;
}
# 2. append (+=) to a variable defined for *another* condition
elsif ($type eq '+' && keys %{$var_value{$var}})
{
# * Generally, $cond is not TRUE. For instance:
# FOO = foo
# if COND
# FOO += bar
# endif
# In this case, we declare an helper variable conditionally,
# and append it to FOO:
# FOO = foo $(am__append_1)
# @COND_TRUE@am__append_1 = bar
# Of course if FOO is defined under several conditions, we add
# $(am__append_1) to each definitions.
#
# * If $cond is TRUE, we don't need the helper variable. E.g., in
# if COND1
# FOO = foo1
# else
# FOO = foo2
# endif
# FOO += bar
# we can add bar directly to all definition of FOO, and output
# @COND_TRUE@FOO = foo1 bar
# @COND_FALSE@FOO = foo2 bar
# Do we need an helper variable?
if ($cond ne 'TRUE')
{
# Does the helper variable already exists?
my $key = "$var:$cond";
if (exists $appendvar{$key})
{
# Yes, let's simply append to it.
$var = $appendvar{$key};
$owner = VAR_AUTOMAKE;
}
else
{
# No, create it.
my $num = 1 + keys (%appendvar);
my $hvar = "am__append_$num";
$appendvar{$key} = $hvar;
¯o_define ($hvar, VAR_AUTOMAKE, '+',
$cond, $value, $where);
push @var_list, $hvar;
# Now HVAR is to be added to VAR.
$value = "\$($hvar)";
}
}
# Add VALUE to all definitions of VAR.
foreach my $vcond (keys %{$var_value{$var}})
{
# We have a bit of error detection to do here.
# This:
# if COND1
# X = Y
# endif
# X += Z
# should be rejected because X is not defined for all conditions
# where `+=' applies.
my @undef_cond = variable_not_always_defined_in_cond $var, $cond;
if (@undef_cond != 0)
{
error ($where,
"Cannot apply `+=' because `$var' is not defined "
. "in\nthe following conditions:\n "
. join ("\n ", @undef_cond)
. "\nEither define `$var' in these conditions,"
. " or use\n`+=' in the same conditions as"
. " the definitions.");
}
else
{
¯o_define ($var, $owner, '+', $vcond, $value, $where);
}
}
# Don't adjust the owner. The above ¯o_define did it in the
# right conditions.
$adjust_owner = 0;
}
# 3. first assignment (=, :=, or +=)
else
{
# If Automake tries to override a value specified by the user,
# just don't let it do.
if (exists $var_value{$var}{$cond}
&& $var_owner{$var}{$cond} != VAR_AUTOMAKE
&& $owner == VAR_AUTOMAKE)
{
verb ("refusing to override the user definition of:\n"
. macro_dump ($var)
."with `$cond' => `$value'");
}
else
{
# There must be no previous value unless the user is redefining
# an Automake variable or an AC_SUBST variable for an existing
# condition.
check_ambiguous_conditional ($var, $cond, $where)
unless (exists $var_owner{$var}{$cond}
&& (($var_owner{$var}{$cond} == VAR_AUTOMAKE
&& $owner != VAR_AUTOMAKE)
|| $var_owner{$var}{$cond} == VAR_CONFIGURE));
$var_value{$var}{$cond} = $value;
# Assignments to a macro set its location. We don't adjust
# locations for `+='. Ideally I suppose we would associate
# line numbers with random bits of text.
$var_location{$var}{$cond} = $where;
}
}
# The owner of a variable can only increase, because an Automake
# variable can be given to the user, but not the converse.
if ($adjust_owner &&
(! exists $var_owner{$var}{$cond}
|| $owner > $var_owner{$var}{$cond}))
{
$var_owner{$var}{$cond} = $owner;
# Always adjust the location when the owner changes (even for
# `+=' statements). The risk otherwise is to warn about
# a VAR_MAKEFILE variable and locate it in configure.ac...
$var_location{$var}{$cond} = $where;
}
# Call var_VAR_trigger if it's defined.
# This hook helps to update some internal state *while*
# parsing the file. For instance the handling of SUFFIXES
# requires this (see var_SUFFIXES_trigger).
my $var_trigger = "var_${var}_trigger";
&$var_trigger($type, $value) if defined &$var_trigger;
}
# ¯o_delete ($VAR, [@CONDS])
# ------------------------------
# Forget about $VAR under the conditions @CONDS, or completely if
# @CONDS is empty.
sub macro_delete ($@)
{
my ($var, @conds) = @_;
if (!@conds)
{
delete $var_value{$var};
delete $var_location{$var};
delete $var_owner{$var};
delete $var_comment{$var};
delete $var_type{$var};
}
else
{
foreach my $cond (@conds)
{
delete $var_value{$var}{$cond};
delete $var_location{$var}{$cond};
delete $var_owner{$var}{$cond};
delete $var_comment{$var}{$cond};
delete $var_type{$var}{$cond};
}
}
}
# ¯o_dump ($VAR)
# ------------------
sub macro_dump ($)
{
my ($var) = @_;
my $text = '';
if (!exists $var_value{$var})
{
$text = " $var does not exist\n";
}
else
{
$text .= " $var $var_type{$var}=\n {\n";
foreach my $vcond (sort by_condition keys %{$var_value{$var}})
{
prog_error ("`$var' is a key in \$var_value, "
. "but not in \$var_owner\n")
unless exists $var_owner{$var}{$vcond};
my $var_owner;
if ($var_owner{$var}{$vcond} == VAR_AUTOMAKE)
{
$var_owner = 'Automake';
}
elsif ($var_owner{$var}{$vcond} == VAR_CONFIGURE)
{
$var_owner = 'Configure';
}
elsif ($var_owner{$var}{$vcond} == VAR_MAKEFILE)
{
$var_owner = 'Makefile';
}
else
{
prog_error ("unexpected value for `\$var_owner{$var}{$vcond}': "
. $var_owner{$var}{$vcond})
unless defined $var_owner;
}
my $where = (defined $var_location{$var}{$vcond}
? $var_location{$var}{$vcond} : "undefined");
$text .= "$var_comment{$var}{$vcond}"
if exists $var_comment{$var}{$vcond};
$text .= " $vcond => $var_value{$var}{$vcond}\n";
}
$text .= " }\n";
}
return $text;
}
# ¯os_dump ()
# ---------------
sub macros_dump ()
{
my ($var) = @_;
my $text = "%var_value =\n{\n";
foreach my $var (sort (keys %var_value))
{
$text .= macro_dump ($var);
}
$text .= "}\n";
return $text;
}
# $BOOLEAN
# variable_defined ($VAR, [$COND])
# ---------------------------------
# See if a variable exists. $VAR is the variable name, and $COND is
# the condition which we should check. If no condition is given, we
# currently return true if the variable is defined under any
# condition.
sub variable_defined ($;$)
{
my ($var, $cond) = @_;
if (! exists $var_value{$var}
|| (defined $cond && ! exists $var_value{$var}{$cond}))
{
# VAR is not defined.
# Check there is no target defined with the name of the
# variable we check.
# adl> I'm wondering if this error still makes any sense today. I
# adl> guess it was because targets and variables used to share
# adl> the same namespace in older versions of Automake?
# tom> While what you say is definitely part of it, I think it
# tom> might also have been due to someone making a "spelling error"
# tom> -- writing "foo:..." instead of "foo = ...".
# tom> I'm not sure whether it is really worth diagnosing
# tom> this sort of problem. In the old days I used to add warnings
# tom> and errors like this pretty randomly, based on bug reports I
# tom> got. But there's a plausible argument that I was trying
# tom> too hard to prevent people from making mistakes.
if (exists $targets{$var}
&& (! defined $cond || exists $targets{$var}{$cond}))
{
for my $tcond ($cond || keys %{$targets{$var}})
{
prog_error ("\$targets{$var}{$tcond} exists but "
. "\$target_owner doesn't")
unless exists $target_owner{$var}{$tcond};
# Diagnose the first user target encountered, if any.
# Restricting this test to user targets allows Automake
# to create rules for things like `bin_PROGRAMS = LDADD'.
if ($target_owner{$var}{$tcond} == TARGET_USER)
{
msg_cond_target ('syntax', $tcond, $var,
"`$var' is a target; "
. "expected a variable");
return 0;
}
}
}
return 0;
}
# Even a var_value examination is good enough for us. FIXME:
# really should maintain examined status on a per-condition basis.
$content_seen{$var} = 1;
return 1;
}
# $BOOLEAN
# variable_assert ($VAR, $WHERE)
# ------------------------------
# Make sure a variable exists. $VAR is the variable name, and $WHERE
# is the name of a macro which refers to $VAR.
sub variable_assert ($$)
{
my ($var, $where) = @_;
return 1
if variable_defined $var;
require_variables ($where, "variable `$var' is used", 'TRUE', $var);
return 0;
}
# Mark a variable as examined.
sub examine_variable
{
my ($var) = @_;
variable_defined ($var);
}
# &variable_conditions_recursive ($VAR)
# -------------------------------------
# Return the set of conditions for which a variable is defined.
# If the variable is not defined conditionally, and is not defined in
# terms of any variables which are defined conditionally, then this
# returns the empty list.
# If the variable is defined conditionally, but is not defined in
# terms of any variables which are defined conditionally, then this
# returns the list of conditions for which the variable is defined.
# If the variable is defined in terms of any variables which are
# defined conditionally, then this returns a full set of permutations
# of the subvariable conditions. For example, if the variable is
# defined in terms of a variable which is defined for COND_TRUE,
# then this returns both COND_TRUE and COND_FALSE. This is
# because we will need to define the variable under both conditions.
sub variable_conditions_recursive ($)
{
my ($var) = @_;
%vars_scanned = ();
my @new_conds = variable_conditions_recursive_sub ($var, '');
# Now we want to return all permutations of the subvariable
# conditions.
my %allconds = ();
foreach my $item (@new_conds)
{
foreach (split (' ', $item))
{
s/^(.*)_(TRUE|FALSE)$/$1_TRUE/;
$allconds{$_} = 1;
}
}
@new_conds = variable_conditions_permutations (sort keys %allconds);
my %uniquify;
foreach my $cond (@new_conds)
{
my $reduce = variable_conditions_reduce (split (' ', $cond));
next
if $reduce eq 'FALSE';
$uniquify{$cond} = 1;
}
# Note we cannot just do `return sort keys %uniquify', because this
# function is sometimes used in a scalar context.
my @uniq_list = sort by_condition keys %uniquify;
return @uniq_list;
}
# @CONDS
# variable_conditions ($VAR)
# --------------------------
# Get the list of conditions that a variable is defined with, without
# recursing through the conditions of any subvariables.
# Argument is $VAR: the variable to get the conditions of.
# Returns the list of conditions.
sub variable_conditions ($)
{
my ($var) = @_;
my @conds = keys %{$var_value{$var}};
return sort by_condition @conds;
}
# $BOOLEAN
# &variable_conditionally_defined ($VAR)
# --------------------------------------
sub variable_conditionally_defined ($)
{
my ($var) = @_;
foreach my $cond (variable_conditions_recursive ($var))
{
return 1
unless $cond =~ /^TRUE|FALSE$/;
}
return 0;
}
# @LIST
# &scan_variable_expansions ($TEXT)
# ---------------------------------
# Return the list of variable names expanded in $TEXT.
# Note that unlike some other functions, $TEXT is not split
# on spaces before we check for subvariables.
sub scan_variable_expansions ($)
{
my ($text) = @_;
my @result = ();
# Strip comments.
$text =~ s/#.*$//;
# Record each use of ${stuff} or $(stuff) that does not follow a $.
while ($text =~ /(?<!\$)\$(?:\{([^\}]*)\}|\(([^\)]*)\))/g)
{
my $var = $1 || $2;
# The occurrence may look like $(string1[:subst1=[subst2]]) but
# we want only `string1'.
$var =~ s/:[^:=]*=[^=]*$//;
push @result, $var;
}
return @result;
}
# &check_variable_expansions ($TEXT, $WHERE)
# ------------------------------------------
# Check variable expansions in $TEXT and warn about any name that
# does not conform to POSIX. $WHERE is the location of $TEXT for
# the error message.
sub check_variable_expansions ($$)
{
my ($text, $where) = @_;
# Catch expansion of variables whose name does not conform to POSIX.
foreach my $var (scan_variable_expansions ($text))
{
if ($var !~ /$MACRO_PATTERN/)
{
# If the variable name contains a space, it's likely
# to be a GNU make extension (such as $(addsuffix ...)).
# Mention this in the diagnostic.
my $gnuext = "";
$gnuext = "\n(probably a GNU make extension)" if $var =~ / /;
msg ('portability', $where,
"$var: non-POSIX variable name$gnuext");
}
}
}
# &variable_conditions_recursive_sub ($VAR, $PARENT)
# -------------------------------------------------------
# A subroutine of variable_conditions_recursive. This returns all the
# conditions of $VAR, including those of any sub-variables.
sub variable_conditions_recursive_sub
{
my ($var, $parent) = @_;
my @new_conds = ();
if (defined $vars_scanned{$var})
{
err_var $parent, "variable `$var' recursively defined";
return ();
}
$vars_scanned{$var} = 1;
my @this_conds = ();
# Examine every condition under which $VAR is defined.
foreach my $vcond (keys %{$var_value{$var}})
{
push (@this_conds, $vcond);
# If $VAR references some other variable, then compute the
# conditions for that subvariable.
my @subvar_conds = ();
foreach my $varname (scan_variable_expansions $var_value{$var}{$vcond})
{
if ($varname =~ /$SUBST_REF_PATTERN/o)
{
$varname = $1;
}
# Here we compute all the conditions under which the
# subvariable is defined. Then we go through and add
# $VCOND to each.
my @svc = variable_conditions_recursive_sub ($varname, $var);
foreach my $item (@svc)
{
my $val = conditional_string ($vcond, split (' ', $item));
$val ||= 'TRUE';
push (@subvar_conds, $val);
}
}
# If there are no conditional subvariables, then we want to
# return this condition. Otherwise, we want to return the
# permutations of the subvariables, taking into account the
# conditions of $VAR.
if (! @subvar_conds)
{
push (@new_conds, $vcond);
}
else
{
push (@new_conds, variable_conditions_reduce (@subvar_conds));
}
}
# Unset our entry in vars_scanned. We only care about recursive
# definitions.
delete $vars_scanned{$var};
# If we are being called on behalf of another variable, we need to
# return all possible permutations of the conditions. We have
# already handled everything in @this_conds along with their
# subvariables. We now need to add any permutations that are not
# in @this_conds.
foreach my $this_cond (@this_conds)
{
my @perms =
variable_conditions_permutations (split (' ', $this_cond));
foreach my $perm (@perms)
{
my $ok = 1;
foreach my $scan (@this_conds)
{
if (&conditional_true_when ($perm, $scan)
|| &conditional_true_when ($scan, $perm))
{
$ok = 0;
last;
}
}
next if ! $ok;
# This permutation was not already handled, and is valid
# for the parents.
push (@new_conds, $perm);
}
}
return @new_conds;
}
# Filter a list of conditionals so that only the exclusive ones are
# retained. For example, if both `COND1_TRUE COND2_TRUE' and
# `COND1_TRUE' are in the list, discard the latter.
# If the list is empty, return TRUE
sub variable_conditions_reduce
{
my (@conds) = @_;
my @ret = ();
my $cond;
while(@conds > 0)
{
$cond = shift(@conds);
# FALSE is absorbent.
return 'FALSE'
if $cond eq 'FALSE';
if (!conditional_is_redundant ($cond, @ret, @conds))
{
push (@ret, $cond);
}
}
return "TRUE" if @ret == 0;
return @ret;
}
# @CONDS
# invert_conditions (@CONDS)
# --------------------------
# Invert a list of conditionals. Returns a set of conditionals which
# are never true for any of the input conditionals, and when taken
# together with the input conditionals cover all possible cases.
#
# For example:
# invert_conditions("A_TRUE B_TRUE", "A_FALSE B_FALSE")
# => ("A_FALSE B_TRUE", "A_TRUE B_FALSE")
#
# invert_conditions("A_TRUE B_TRUE", "A_TRUE B_FALSE", "A_FALSE")
# => ()
sub invert_conditions
{
my (@conds) = @_;
my @notconds = ();
# Generate all permutation for all inputs.
my @perm =
map { variable_conditions_permutations (split(' ', $_)); } @conds;
# Remove redundant conditions.
@perm = variable_conditions_reduce @perm;
# Now remove all conditions which imply one of the input conditions.
foreach my $perm (@perm)
{
push @notconds, $perm
if ! conditional_implies_any ($perm, @conds);
}
return @notconds;
}
# Return a list of permutations of a conditional string.
# (But never output FALSE conditions, they are useless.)
#
# Examples:
# variable_conditions_permutations ("FOO_FALSE", "BAR_TRUE")
# => ("FOO_FALSE BAR_FALSE",
# "FOO_FALSE BAR_TRUE",
# "FOO_TRUE BAR_FALSE",
# "FOO_TRUE BAR_TRUE")
# variable_conditions_permutations ("FOO_FALSE", "TRUE")
# => ("FOO_FALSE TRUE",
# "FOO_TRUE TRUE")
# variable_conditions_permutations ("TRUE")
# => ("TRUE")
# variable_conditions_permutations ("FALSE")
# => ("TRUE")
sub variable_conditions_permutations
{
my (@comps) = @_;
return ()
if ! @comps;
my $comp = shift (@comps);
return variable_conditions_permutations (@comps)
if $comp eq '';
my $neg = condition_negate ($comp);
my @ret;
foreach my $sub (variable_conditions_permutations (@comps))
{
push (@ret, "$comp $sub") if $comp ne 'FALSE';
push (@ret, "$neg $sub") if $neg ne 'FALSE';
}
if (! @ret)
{
push (@ret, $comp) if $comp ne 'FALSE';
push (@ret, $neg) if $neg ne 'FALSE';
}
return @ret;
}
# $BOOL
# &check_variable_defined_unconditionally($VAR, $PARENT)
# ------------------------------------------------------
# Warn if a variable is conditionally defined. This is called if we
# are using the value of a variable.
sub check_variable_defined_unconditionally ($$)
{
my ($var, $parent) = @_;
foreach my $cond (keys %{$var_value{$var}})
{
next
if $cond =~ /^TRUE|FALSE$/;
if ($parent)
{
msg_var ('unsupported', $parent,
"automake does not support conditional definition of "
. "$var in $parent");
}
else
{
msg_var ('unsupported', $var,
"automake does not support $var being defined "
. "conditionally");
}
}
}
# Get the TRUE value of a variable, warn if the variable is
# conditionally defined.
sub variable_value
{
my ($var) = @_;
&check_variable_defined_unconditionally ($var);
return $var_value{$var}{'TRUE'};
}
# @VALUES
# &value_to_list ($VAR, $VAL, $COND)
# ----------------------------------
# Convert a variable value to a list, split as whitespace. This will
# recursively follow $(...) and ${...} inclusions. It preserves @...@
# substitutions.
#
# If COND is 'all', then all values under all conditions should be
# returned; if COND is a particular condition (all conditions are
# surrounded by @...@) then only the value for that condition should
# be returned; otherwise, warn if VAR is conditionally defined.
# SCANNED is a global hash listing whose keys are all the variables
# already scanned; it is an error to rescan a variable.
sub value_to_list ($$$)
{
my ($var, $val, $cond) = @_;
my @result;
# Strip backslashes
$val =~ s/\\(\n|$)/ /g;
foreach (split (' ', $val))
{
# If a comment seen, just leave.
last if /^#/;
# Handle variable substitutions.
if (/^\$\{([^}]*)\}$/ || /^\$\(([^)]*)\)$/)
{
my $varname = $1;
# If the user uses a losing variable name, just ignore it.
# This isn't ideal, but people have requested it.
next if ($varname =~ /\@.*\@/);
my ($from, $to);
my @temp_list;
if ($varname =~ /$SUBST_REF_PATTERN/o)
{
$varname = $1;
$to = $3;
$from = quotemeta $2;
}
# Find the value.
@temp_list =
variable_value_as_list_recursive_worker ($1, $cond, $var);
# Now rewrite the value if appropriate.
if (defined $from)
{
grep (s/$from$/$to/, @temp_list);
}
push (@result, @temp_list);
}
else
{
push (@result, $_);
}
}
return @result;
}
# @VALUES
# variable_value_as_list ($VAR, $COND, $PARENT)
# ---------------------------------------------
# Get the value of a variable given a specified condition. without
# recursing through any subvariables.
# Arguments are:
# $VAR is the variable
# $COND is the condition. If this is not given, the value for the
# "TRUE" condition will be returned.
# $PARENT is the variable in which the variable is used: this is used
# only for error messages.
# Returns the list of conditions.
# For example, if A is defined as "foo $(B) bar", and B is defined as
# "baz", this will return ("foo", "$(B)", "bar")
sub variable_value_as_list
{
my ($var, $cond, $parent) = @_;
my @result;
# Check defined
return
unless variable_assert $var, $parent;
# Get value for given condition
$cond ||= 'TRUE';
my $onceflag;
foreach my $vcond (keys %{$var_value{$var}})
{
my $val = $var_value{$var}{$vcond};
if (&conditional_true_when ($vcond, $cond))
{
# Unless variable is not defined conditionally, there should only
# be one value of $vcond true when $cond.
&check_variable_defined_unconditionally ($var, $parent)
if $onceflag;
$onceflag = 1;
# Strip backslashes
$val =~ s/\\(\n|$)/ /g;
foreach (split (' ', $val))
{
# If a comment seen, just leave.
last if /^#/;
push (@result, $_);
}
}
}
return @result;
}
# @VALUE
# &variable_value_as_list_recursive_worker ($VAR, $COND, $PARENT)
# ---------------------------------------------------------------
# Return contents of VAR as a list, split on whitespace. This will
# recursively follow $(...) and ${...} inclusions. It preserves @...@
# substitutions. If COND is 'all', then all values under all
# conditions should be returned; if COND is a particular condition
# (all conditions are surrounded by @...@) then only the value for
# that condition should be returned; otherwise, warn if VAR is
# conditionally defined. If PARENT is specified, it is the name of
# the including variable; this is only used for error reports.
sub variable_value_as_list_recursive_worker ($$$)
{
my ($var, $cond, $parent) = @_;
my @result = ();
return
unless variable_assert $var, $parent;
if (defined $vars_scanned{$var})
{
# `vars_scanned' is a global we use to keep track of which
# variables we've already examined.
err_var $parent, "variable `$var' recursively defined";
}
elsif ($cond eq 'all')
{
$vars_scanned{$var} = 1;
foreach my $vcond (keys %{$var_value{$var}})
{
my $val = $var_value{$var}{$vcond};
push (@result, &value_to_list ($var, $val, $cond));
}
}
else
{
$cond ||= 'TRUE';
$vars_scanned{$var} = 1;
my $onceflag;
foreach my $vcond (keys %{$var_value{$var}})
{
my $val = $var_value{$var}{$vcond};
if (&conditional_true_when ($vcond, $cond))
{
# Warn if we have an ambiguity. It's hard to know how
# to handle this case correctly.
&check_variable_defined_unconditionally ($var, $parent)
if $onceflag;
$onceflag = 1;
push (@result, &value_to_list ($var, $val, $cond));
}
}
}
# Unset our entry in vars_scanned. We only care about recursive
# definitions.
delete $vars_scanned{$var};
return @result;
}
# &variable_output ($VAR, [@CONDS])
# ---------------------------------
# Output all the values of $VAR if @COND is not specified, else only
# that corresponding to @COND.
sub variable_output ($@)
{
my ($var, @conds) = @_;
@conds = keys %{$var_value{$var}}
unless @conds;
foreach my $cond (sort by_condition @conds)
{
prog_error ("unknown condition `$cond' for `$var'")
unless exists $var_value{$var}{$cond};
if (exists $var_comment{$var} && exists $var_comment{$var}{$cond})
{
$output_vars .= $var_comment{$var}{$cond};
}
my $val = $var_value{$var}{$cond};
my $equals = $var_type{$var}{$cond} eq ':' ? ':=' : '=';
my $output_var = "$var $equals $val";
$output_var =~ s/^/make_condition ($cond)/meg;
$output_vars .= $output_var . "\n";
}
}
# &variable_pretty_output ($VAR, [@CONDS])
# ----------------------------------------
# Likewise, but pretty, i.e., we *split* the values at spaces. Use only
# with variables holding filenames.
sub variable_pretty_output ($@)
{
my ($var, @conds) = @_;
@conds = keys %{$var_value{$var}}
unless @conds;
foreach my $cond (sort by_condition @conds)
{
prog_error ("unknown condition `$cond' for `$var'")
unless exists $var_value{$var}{$cond};
if (exists $var_comment{$var} && exists $var_comment{$var}{$cond})
{
$output_vars .= $var_comment{$var}{$cond};
}
my $val = $var_value{$var}{$cond};
my $equals = $var_type{$var}{$cond} eq ':' ? ':=' : '=';
my $make_condition = make_condition ($cond);
# Suppress escaped new lines. &pretty_print_internal will
# add them back, maybe at other places.
$val =~ s/\\$//mg;
$output_vars .= pretty_print_internal ("$make_condition$var $equals",
"$make_condition\t",
split (' ' , $val));
}
}
# &variable_value_as_list_recursive ($VAR, $COND, $PARENT)
# --------------------------------------------------------
# This is just a wrapper for variable_value_as_list_recursive_worker that
# initializes the global hash `vars_scanned'. This hash is used to
# avoid infinite recursion.
sub variable_value_as_list_recursive ($$@)
{
my ($var, $cond, $parent) = @_;
%vars_scanned = ();
return &variable_value_as_list_recursive_worker ($var, $cond, $parent);
}
# &define_pretty_variable ($VAR, $COND, @VALUE)
# ---------------------------------------------
# Like define_variable, but the value is a list, and the variable may
# be defined conditionally. The second argument is the conditional
# under which the value should be defined; this should be the empty
# string to define the variable unconditionally. The third argument
# is a list holding the values to use for the variable. The value is
# pretty printed in the output file.
sub define_pretty_variable ($$@)
{
my ($var, $cond, @value) = @_;
# Beware that an empty $cond has a different semantics for
# macro_define and variable_pretty_output.
$cond ||= 'TRUE';
if (! variable_defined ($var, $cond))
{
macro_define ($var, VAR_AUTOMAKE, '', $cond, "@value", undef);
variable_pretty_output ($var, $cond || 'TRUE');
$content_seen{$var} = 1;
}
}
# define_variable ($VAR, $VALUE)
# ------------------------------
# Define a new user variable VAR to VALUE, but only if not already defined.
sub define_variable ($$)
{
my ($var, $value) = @_;
define_pretty_variable ($var, 'TRUE', $value);
}
# Like define_variable, but define a variable to be the configure
# substitution by the same name.
sub define_configure_variable ($)
{
my ($var) = @_;
if (! variable_defined ($var, 'TRUE')
# Explicitly avoid ANSI2KNR -- we AC_SUBST that in
# protos.m4, but later define it elsewhere. This is
# pretty hacky. We also explicitly avoid AMDEPBACKSLASH:
# it might be subst'd by `\', which certainly would not be
# appreciated by Make.
&& ! grep { $_ eq $var } (qw(ANSI2KNR AMDEPBACKSLASH)))
{
macro_define ($var, VAR_CONFIGURE, '', 'TRUE',
subst $var, $configure_vars{$var});
variable_pretty_output ($var, 'TRUE');
}
}
# define_compiler_variable ($LANG)
# --------------------------------
# Define a compiler variable. We also handle defining the `LT'
# version of the command when using libtool.
sub define_compiler_variable ($)
{
my ($lang) = @_;
my ($var, $value) = ($lang->compiler, $lang->compile);
&define_variable ($var, $value);
&define_variable ("LT$var", "\$(LIBTOOL) --mode=compile $value")
if variable_defined ('LIBTOOL');
}
# define_linker_variable ($LANG)
# ------------------------------
# Define linker variables.
sub define_linker_variable ($)
{
my ($lang) = @_;
my ($var, $value) = ($lang->lder, $lang->ld);
# CCLD = $(CC).
&define_variable ($lang->lder, $lang->ld);
# CCLINK = $(CCLD) blah blah...
&define_variable ($lang->linker,
((variable_defined ('LIBTOOL')
? '$(LIBTOOL) --mode=link ' : '')
. $lang->link));
}
################################################################
## ---------------- ##
## Handling rules. ##
## ---------------- ##
sub register_suffix_rule ($$$)
{
my ($where, $src, $dest) = @_;
verb "Sources ending in $src become $dest";
push @suffixes, $src, $dest;
# When transforming sources to objects, Automake uses the
# %suffix_rules to move from each source extension to
# `.$(OBJEXT)', not to `.o' or `.obj'. However some people
# define suffix rules for `.o' or `.obj', so internally we will
# consider these extensions equivalent to `.$(OBJEXT)'. We
# CANNOT rewrite the target (i.e., automagically replace `.o'
# and `.obj' by `.$(OBJEXT)' in the output), or warn the user
# that (s)he'd better use `.$(OBJEXT)', because Automake itself
# output suffix rules for `.o' or `.obj'...
$dest = '.$(OBJEXT)' if ($dest eq '.o' || $dest eq '.obj');
# Reading the comments near the declaration of $suffix_rules might
# help to understand the update of $suffix_rules that follows...
# Register $dest as a possible destination from $src.
# We might have the create the \hash.
if (exists $suffix_rules->{$src})
{
$suffix_rules->{$src}{$dest} = [ $dest, 1 ];
}
else
{
$suffix_rules->{$src} = { $dest => [ $dest, 1 ] };
}
# If we know how to transform $dest in something else, then
# we know how to transform $src in that "something else".
if (exists $suffix_rules->{$dest})
{
for my $dest2 (keys %{$suffix_rules->{$dest}})
{
my $dist = $suffix_rules->{$dest}{$dest2}[1] + 1;
# Overwrite an existing $src->$dest2 path only if
# the path via $dest which is shorter.
if (! exists $suffix_rules->{$src}{$dest2}
|| $suffix_rules->{$src}{$dest2}[1] > $dist)
{
$suffix_rules->{$src}{$dest2} = [ $dest, $dist ];
}
}
}
# Similarly, any extension that can be derived into $src
# can be derived into the same extensions as $src can.
my @dest2 = keys %{$suffix_rules->{$src}};
for my $src2 (keys %$suffix_rules)
{
if (exists $suffix_rules->{$src2}{$src})
{
for my $dest2 (@dest2)
{
my $dist = $suffix_rules->{$src}{$dest2} + 1;
# Overwrite an existing $src2->$dest2 path only if
# the path via $src is shorter.
if (! exists $suffix_rules->{$src2}{$dest2}
|| $suffix_rules->{$src2}{$dest2}[1] > $dist)
{
$suffix_rules->{$src2}{$dest2} = [ $src, $dist ];
}
}
}
}
}
# @CONDS
# rule_define ($TARGET, $SOURCE, $OWNER, $COND, $WHERE)
# -----------------------------------------------------
# Define a new rule. $TARGET is the rule name. $SOURCE
# is the filename the rule comes from. $OWNER is the
# owner of the rule (TARGET_AUTOMAKE or TARGET_USER).
# $COND is the condition string under which the rule is defined.
# $WHERE is where the rule is defined (file name and/or line number).
# Returns a (possibly empty) list of conditions where the rule
# should be defined.
sub rule_define ($$$$$)
{
my ($target, $source, $owner, $cond, $where) = @_;
# Don't even think about defining a rule in condition FALSE.
return () if $cond eq 'FALSE';
# For now `foo:' will override `foo$(EXEEXT):'. This is temporary,
# though, so we emit a warning.
(my $noexe = $target) =~ s,\$\(EXEEXT\)$,,;
if ($noexe ne $target
&& exists $targets{$noexe}
&& exists $targets{$noexe}{$cond}
&& $target_name{$noexe}{$cond} ne $target)
{
# The no-exeext option enables this feature.
if (! defined $options{'no-exeext'})
{
msg ('obsolete', $noexe,
"deprecated feature: `$noexe' overrides `$noexe\$(EXEEXT)'\n"
. "change your target to read `$noexe\$(EXEEXT)'");
}
# Don't define.
return ();
}
# For now on, strip off $(EXEEXT) from $target, so we can diagnose
# a clash if `ctags$(EXEEXT):' is redefined after `ctags:'.
my $realtarget = $target;
$target = $noexe;
# A GNU make-style pattern rule has a single "%" in the target name.
msg ('portability', $where,
"`%'-style pattern rules are a GNU make extension")
if $target =~ /^[^%]*%[^%]*$/;
# Diagnose target redefinitions.
if (exists $target_source{$target}{$cond})
{
# Sanity checks.
prog_error ("\$target_source{$target}{$cond} exists, but \$target_owner"
. " doesn't.")
unless exists $target_owner{$target}{$cond};
prog_error ("\$target_source{$target}{$cond} exists, but \$targets"
. " doesn't.")
unless exists $targets{$target}{$cond};
prog_error ("\$target_source{$target}{$cond} exists, but \$target_name"
. " doesn't.")
unless exists $target_name{$target}{$cond};
my $oldowner = $target_owner{$target}{$cond};
# Don't mention true conditions in diagnostics.
my $condmsg = $cond ne 'TRUE' ? " in condition `$cond'" : '';
if ($owner == TARGET_USER)
{
if ($oldowner eq TARGET_USER)
{
# Ignore `%'-style pattern rules. We'd need the
# dependencies to detect duplicates, and they are
# already diagnosed as unportable by -Wportability.
if ($target !~ /^[^%]*%[^%]*$/)
{
## FIXME: Presently we can't diagnose duplicate user rules
## because we doesn't distinguish rules with commands
## from rules that only add dependencies. E.g.,
## .PHONY: foo
## .PHONY: bar
## is legitimate. (This is phony.test.)
# msg ('syntax', $where,
# "redefinition of `$target'$condmsg...");
# msg_cond_target ('syntax', $cond, $target,
# "... `$target' previously defined here.");
}
# Return so we don't redefine the rule in our tables,
# don't check for ambiguous conditional, etc. The rule
# will be output anyway beauce &read_am_file ignore the
# return code.
return ();
}
else
{
# Since we parse the user Makefile.am before reading
# the Automake fragments, this condition should never happen.
prog_error ("user target `$target' seen after Automake's "
. "definition\nfrom `$targets{$target}$condmsg'");
}
}
else # $owner == TARGET_AUTOMAKE
{
if ($oldowner == TARGET_USER)
{
# Don't overwrite the user definition of TARGET.
return ();
}
else # $oldowner == TARGET_AUTOMAKE
{
# Automake should ignore redefinitions of its own
# rules if they came from the same file. This makes
# it easier to process a Makefile fragment several times.
# Hower it's an error if the target is defined in many
# files. E.g., the user might be using bin_PROGRAMS = ctags
# which clashes with our `ctags' rule.
# (It would be more accurate if we had a way to compare
# the *content* of both rules. Then $targets_source would
# be useless.)
my $oldsource = $target_source{$target}{$cond};
return () if $source eq $oldsource;
msg ('syntax', $where, "redefinition of `$target'$condmsg...");
msg_cond_target ('syntax', $cond, $target,
"... `$target' previously defined here.");
return ();
}
}
# Never reached.
prog_error ("Unreachable place reached.");
}
# Conditions for which the rule should be defined.
my @conds = $cond;
# Check ambiguous conditional definitions.
my ($message, $ambig_cond) =
conditional_ambiguous_p ($target, $cond, keys %{$targets{$target}});
if ($message) # We have an ambiguity.
{
if ($owner == TARGET_USER)
{
# For user rules, just diagnose the ambiguity.
msg 'syntax', $where, "$message ...";
msg_cond_target ('syntax', $ambig_cond, $target,
"... `$target' previously defined here.");
return ();
}
else
{
# FIXME: for Automake rules, we can't diagnose ambiguities yet.
# The point is that Automake doesn't propagate conditionals
# everywhere. For instance &handle_PROGRAMS doesn't care if
# bin_PROGRAMS was defined conditionally or not.
# On the following input
# if COND1
# foo:
# ...
# else
# bin_PROGRAMS = foo
# endif
# &handle_PROGRAMS will attempt to define a `foo:' rule
# in condition TRUE (which conflicts with COND1). Fixing
# this in &handle_PROGRAMS and siblings seems hard: you'd
# have to explain &file_contents what to do with a
# conditional. So for now we do our best *here*. If `foo:'
# was already defined in condition COND1 and we want to define
# it in condition TRUE, then define it only in condition !COND1.
# (See cond14.test and cond15.test for some test cases.)
my @defined_conds = keys %{$targets{$target}};
@conds = ();
for my $undefined_cond (invert_conditions(@defined_conds))
{
push @conds, make_condition ($cond, $undefined_cond);
}
# No conditions left to define the rule.
# Warn, because our workaround is meaningless in this case.
if (scalar @conds == 0)
{
msg 'syntax', $where, "$message ...";
msg_cond_target ('syntax', $ambig_cond, $target,
"... `$target' previously defined here.");
return ();
}
}
}
# Finally define this rule.
for my $c (@conds)
{
$targets{$target}{$c} = $where;
$target_source{$target}{$c} = $source;
$target_owner{$target}{$c} = $owner;
$target_name{$target}{$c} = $realtarget;
}
# We honor inference rules with multiple targets because many
# make support this and people use it. However this is disallowed
# by POSIX. We'll print a warning later.
my $target_count = 0;
my $inference_rule_count = 0;
for my $t (split (' ', $target))
{
++$target_count;
# Check the rule for being a suffix rule. If so, store in a hash.
# Either it's a rule for two known extensions...
if ($t =~ /^($KNOWN_EXTENSIONS_PATTERN)($KNOWN_EXTENSIONS_PATTERN)$/
# ...or it's a rule with unknown extensions (.i.e, the rule
# looks like `.foo.bar:' but `.foo' or `.bar' are not
# declared in SUFFIXES and are not known language
# extensions). Automake will complete SUFFIXES from
# @suffixes automatically (see handle_footer).
|| ($t =~ /$SUFFIX_RULE_PATTERN/o && accept_extensions($1)))
{
++$inference_rule_count;
register_suffix_rule ($where, $1, $2);
}
}
# POSIX allows multiple targets before the colon, but disallows
# definitions of multiple inference rules. It's also
# disallowed to mix plain targets with inference rules.
msg ('portability', $where,
"Inference rules can have only one target before the colon (POSIX).")
if $inference_rule_count > 0 && $target_count > 1;
# Return "" instead of TRUE so it can be used with make_paragraphs
# directly.
return "" if 1 == @conds && $conds[0] eq 'TRUE';
return @conds;
}
# See if a target exists.
sub target_defined
{
my ($target) = @_;
return exists $targets{$target};
}
################################################################
# &check_trailing_slash ($WHERE, $LINE)
# --------------------------------------
# Return 1 iff $LINE ends with a slash.
# Might modify $LINE.
sub check_trailing_slash ($\$)
{
my ($where, $line) = @_;
# Ignore `##' lines.
return 0 if $$line =~ /$IGNORE_PATTERN/o;
# Catch and fix a common error.
msg "syntax", $where, "whitespace following trailing backslash"
if $$line =~ s/\\\s+\n$/\\\n/;
return $$line =~ /\\$/;
}
# &append_comments ($VARIABLE, $SPACING, $COMMENT)
# ------------------------------------------------
# Append $COMMENT to the other comments for $VARIABLE, using
# $SPACING as separator.
sub append_comments ($$$$)
{
my ($cond, $var, $spacing, $comment) = @_;
$var_comment{$var}{$cond} .= $spacing
if (!defined $var_comment{$var}{$cond}
|| $var_comment{$var}{$cond} !~ /\n$/o);
$var_comment{$var}{$cond} .= $comment;
}
# &read_am_file ($AMFILE)
# -----------------------
# Read Makefile.am and set up %contents. Simultaneously copy lines
# from Makefile.am into $output_trailer or $output_vars as
# appropriate. NOTE we put rules in the trailer section. We want
# user rules to come after our generated stuff.
sub read_am_file ($)
{
my ($amfile) = @_;
my $am_file = new Automake::XFile ("< $amfile");
verb "reading $amfile";
my $spacing = '';
my $comment = '';
my $blank = 0;
my $saw_bk = 0;
use constant IN_VAR_DEF => 0;
use constant IN_RULE_DEF => 1;
use constant IN_COMMENT => 2;
my $prev_state = IN_RULE_DEF;
while ($_ = $am_file->getline)
{
if (/$IGNORE_PATTERN/o)
{
# Merely delete comments beginning with two hashes.
}
elsif (/$WHITE_PATTERN/o)
{
error "$amfile:$.", "blank line following trailing backslash"
if $saw_bk;
# Stick a single white line before the incoming macro or rule.
$spacing = "\n";
$blank = 1;
# Flush all comments seen so far.
if ($comment ne '')
{
$output_vars .= $comment;
$comment = '';
}
}
elsif (/$COMMENT_PATTERN/o)
{
# Stick comments before the incoming macro or rule. Make
# sure a blank line precedes the first block of comments.
$spacing = "\n" unless $blank;
$blank = 1;
$comment .= $spacing . $_;
$spacing = '';
$prev_state = IN_COMMENT;
}
else
{
last;
}
$saw_bk = check_trailing_slash ("$amfile:$.", $_);
}
# We save the conditional stack on entry, and then check to make
# sure it is the same on exit. This lets us conditionally include
# other files.
my @saved_cond_stack = @cond_stack;
my $cond = conditional_string (@cond_stack);
my $last_var_name = '';
my $last_var_type = '';
my $last_var_value = '';
# FIXME: shouldn't use $_ in this loop; it is too big.
while ($_)
{
my $here = "$amfile:$.";
# Make sure the line is \n-terminated.
chomp;
$_ .= "\n";
# Don't look at MAINTAINER_MODE_TRUE here. That shouldn't be
# used by users. @MAINT@ is an anachronism now.
$_ =~ s/\@MAINT\@//g
unless $seen_maint_mode;
my $new_saw_bk = check_trailing_slash ($here, $_);
if (/$IGNORE_PATTERN/o)
{
# Merely delete comments beginning with two hashes.
}
elsif (/$WHITE_PATTERN/o)
{
# Stick a single white line before the incoming macro or rule.
$spacing = "\n";
error $here, "blank line following trailing backslash"
if $saw_bk;
}
elsif (/$COMMENT_PATTERN/o)
{
# Stick comments before the incoming macro or rule.
$comment .= $spacing . $_;
$spacing = '';
error $here, "comment following trailing backslash"
if $saw_bk && $comment eq '';
$prev_state = IN_COMMENT;
}
elsif ($saw_bk)
{
if ($prev_state == IN_RULE_DEF)
{
$output_trailer .= &make_condition (@cond_stack);
$output_trailer .= $_;
}
elsif ($prev_state == IN_COMMENT)
{
# If the line doesn't start with a `#', add it.
# We do this because a continued comment like
# # A = foo \
# bar \
# baz
# is not portable. BSD make doesn't honor
# escaped newlines in comments.
s/^#?/#/;
$comment .= $spacing . $_;
}
else # $prev_state == IN_VAR_DEF
{
$last_var_value .= ' '
unless $last_var_value =~ /\s$/;
$last_var_value .= $_;
if (!/\\$/)
{
append_comments ($cond || 'TRUE',
$last_var_name, $spacing, $comment);
$comment = $spacing = '';
macro_define ($last_var_name, VAR_MAKEFILE,
$last_var_type, $cond,
$last_var_value, $here)
if $cond ne 'FALSE';
push (@var_list, $last_var_name);
}
}
}
elsif (/$IF_PATTERN/o)
{
$cond = cond_stack_if ($1, $2, $here);
}
elsif (/$ELSE_PATTERN/o)
{
$cond = cond_stack_else ($1, $2, $here);
}
elsif (/$ENDIF_PATTERN/o)
{
$cond = cond_stack_endif ($1, $2, $here);
}
elsif (/$RULE_PATTERN/o)
{
# Found a rule.
$prev_state = IN_RULE_DEF;
# For now we have to output all definitions of user rules
# and can't diagnose duplicates (see the comment in
# rule_define). So we go on and ignore the return value.
rule_define ($1, $amfile, TARGET_USER, $cond || 'TRUE', $here);
check_variable_expansions ($_, $here);
$output_trailer .= $comment . $spacing;
$output_trailer .= &make_condition (@cond_stack);
$output_trailer .= $_;
$comment = $spacing = '';
}
elsif (/$ASSIGNMENT_PATTERN/o)
{
# Found a macro definition.
$prev_state = IN_VAR_DEF;
$last_var_name = $1;
$last_var_type = $2;
$last_var_value = $3;
if ($3 ne '' && substr ($3, -1) eq "\\")
{
# We preserve the `\' because otherwise the long lines
# that are generated will be truncated by broken
# `sed's.
$last_var_value = $3 . "\n";
}
if (!/\\$/)
{
# Accumulating variables must not be output.
append_comments ($cond || 'TRUE',
$last_var_name, $spacing, $comment);
$comment = $spacing = '';
macro_define ($last_var_name, VAR_MAKEFILE,
$last_var_type, $cond,
$last_var_value, $here)
if $cond ne 'FALSE';
push (@var_list, $last_var_name);
}
}
elsif (/$INCLUDE_PATTERN/o)
{
my $path = $1;
if ($path =~ s/^\$\(top_srcdir\)\///)
{
push (@include_stack, "\$\(top_srcdir\)/$path");
# Distribute any included file.
# Always use the $(top_srcdir) prefix in DIST_COMMON,
# otherwise OSF make will implicitly copy the included
# file in the build tree during `make distdir' to satisfy
# the dependency.
# (subdircond2.test and subdircond3.test will fail.)
push_dist_common ("\$\(top_srcdir\)/$path");
}
else
{
$path =~ s/\$\(srcdir\)\///;
push (@include_stack, "\$\(srcdir\)/$path");
# Always use the $(srcdir) prefix in DIST_COMMON,
# otherwise OSF make will implicitly copy the included
# file in the build tree during `make distdir' to satisfy
# the dependency.
# (subdircond2.test and subdircond3.test will fail.)
push_dist_common ("\$\(srcdir\)/$path");
$path = $relative_dir . "/" . $path;
}
&read_am_file ($path);
}
else
{
# This isn't an error; it is probably a continued rule.
# In fact, this is what we assume.
$prev_state = IN_RULE_DEF;
check_variable_expansions ($_, $here);
$output_trailer .= $comment . $spacing;
$output_trailer .= &make_condition (@cond_stack);
$output_trailer .= $_;
$comment = $spacing = '';
error $here, "`#' comment at start of rule is unportable"
if $_ =~ /^\t\s*\#/;
}
$saw_bk = $new_saw_bk;
$_ = $am_file->getline;
}
$output_trailer .= $comment;
err_am ("trailing backslash on last line")
if $saw_bk;
err_am (@cond_stack ? "unterminated conditionals: @cond_stack"
: "too many conditionals closed in include file")
if "@saved_cond_stack" ne "@cond_stack";
}
# define_standard_variables ()
# ----------------------------
# A helper for read_main_am_file which initializes configure variables
# and variables from header-vars.am.
sub define_standard_variables
{
my $saved_output_vars = $output_vars;
my ($comments, undef, $rules) =
file_contents_internal (1, "$libdir/am/header-vars.am");
# This will output the definitions in $output_vars, which we don't
# want...
foreach my $var (sort keys %configure_vars)
{
&define_configure_variable ($var);
push (@var_list, $var);
}
# ... hence, we restore $output_vars.
$output_vars = $saved_output_vars . $comments . $rules;
}
# Read main am file.
sub read_main_am_file
{
my ($amfile) = @_;
# This supports the strange variable tricks we are about to play.
prog_error (macros_dump () . "variable defined before read_main_am_file")
if (scalar keys %var_value > 0);
# Generate copyright header for generated Makefile.in.
# We do discard the output of predefined variables, handled below.
$output_vars = ("# $in_file_name generated by automake "
. $VERSION . " from $am_file_name.\n");
$output_vars .= '# ' . subst ('configure_input') . "\n";
$output_vars .= $gen_copyright;
# We want to predefine as many variables as possible. This lets
# the user set them with `+=' in Makefile.am. However, we don't
# want these initial definitions to end up in the output quite
# yet. So we just load them, but output them later.
&define_standard_variables;
# Read user file, which might override some of our values.
&read_am_file ($amfile);
# Output all the Automake variables. If the user changed one,
# then it is now marked as VAR_CONFIGURE or VAR_MAKEFILE.
foreach my $var (uniq @var_list)
{
# Some variables, like AMDEPBACKSLASH are in @var_list
# but don't have a owner. This is good, because we don't want
# to output them.
foreach my $cond (keys %{$var_owner{$var}})
{
variable_output ($var, $cond)
if $var_owner{$var}{$cond} == VAR_AUTOMAKE;
}
}
# Now dump the user variables that were defined. We do it in the same
# order in which they were defined (skipping duplicates).
foreach my $var (uniq @var_list)
{
foreach my $cond (keys %{$var_owner{$var}})
{
variable_output ($var, $cond)
if $var_owner{$var}{$cond} != VAR_AUTOMAKE;
}
}
}
################################################################
# $FLATTENED
# &flatten ($STRING)
# ------------------
# Flatten the $STRING and return the result.
sub flatten
{
$_ = shift;
s/\\\n//somg;
s/\s+/ /g;
s/^ //;
s/ $//;
return $_;
}
# @PARAGRAPHS
# &make_paragraphs ($MAKEFILE, [%TRANSFORM])
# ------------------------------------------
# Load a $MAKEFILE, apply the %TRANSFORM, and return it as a list of
# paragraphs.
sub make_paragraphs ($%)
{
my ($file, %transform) = @_;
# Complete %transform with global options and make it a Perl
# $command.
my $command =
"s/$IGNORE_PATTERN//gm;"
. transform (%transform,
'CYGNUS' => $cygnus_mode,
'MAINTAINER-MODE'
=> $seen_maint_mode ? subst ('MAINTAINER_MODE_TRUE') : '',
'SHAR' => $options{'dist-shar'} || 0,
'BZIP2' => $options{'dist-bzip2'} || 0,
'ZIP' => $options{'dist-zip'} || 0,
'COMPRESS' => $options{'dist-tarZ'} || 0,
'INSTALL-INFO' => !$options{'no-installinfo'},
'INSTALL-MAN' => !$options{'no-installman'},
'CK-NEWS' => $options{'check-news'} || 0,
'SUBDIRS' => variable_defined ('SUBDIRS'),
'TOPDIR' => backname ($relative_dir),
'TOPDIR_P' => $relative_dir eq '.',
'CONFIGURE-AC' => $configure_ac,
'BUILD' => $seen_canonical == AC_CANONICAL_SYSTEM,
'HOST' => $seen_canonical,
'TARGET' => $seen_canonical == AC_CANONICAL_SYSTEM,
'LIBTOOL' => variable_defined ('LIBTOOL'))
# We don't need more than two consecutive new-lines.
. 's/\n{3,}/\n\n/g';
# Swallow the file and apply the COMMAND.
my $fc_file = new Automake::XFile "< $file";
# Looks stupid?
verb "reading $file";
my $saved_dollar_slash = $/;
undef $/;
$_ = $fc_file->getline;
$/ = $saved_dollar_slash;
eval $command;
$fc_file->close;
my $content = $_;
# Split at unescaped new lines.
my @lines = split (/(?<!\\)\n/, $content);
my @res;
while (defined ($_ = shift @lines))
{
my $paragraph = "$_";
# If we are a rule, eat as long as we start with a tab.
if (/$RULE_PATTERN/smo)
{
while (defined ($_ = shift @lines) && $_ =~ /^\t/)
{
$paragraph .= "\n$_";
}
unshift (@lines, $_);
}
# If we are a comments, eat as much comments as you can.
elsif (/$COMMENT_PATTERN/smo)
{
while (defined ($_ = shift @lines)
&& $_ =~ /$COMMENT_PATTERN/smo)
{
$paragraph .= "\n$_";
}
unshift (@lines, $_);
}
push @res, $paragraph;
$paragraph = '';
}
return @res;
}
# ($COMMENT, $VARIABLES, $RULES)
# &file_contents_internal ($IS_AM, $FILE, [%TRANSFORM])
# -----------------------------------------------------
# Return contents of a file from $libdir/am, automatically skipping
# macros or rules which are already known. $IS_AM iff the caller is
# reading an Automake file (as opposed to the user's Makefile.am).
sub file_contents_internal ($$%)
{
my ($is_am, $file, %transform) = @_;
my $result_vars = '';
my $result_rules = '';
my $comment = '';
my $spacing = '';
# The following flags are used to track rules spanning across
# multiple paragraphs.
my $is_rule = 0; # 1 if we are processing a rule.
my $discard_rule = 0; # 1 if the current rule should not be output.
# We save the conditional stack on entry, and then check to make
# sure it is the same on exit. This lets us conditionally include
# other files.
my @saved_cond_stack = @cond_stack;
my $cond = conditional_string (@cond_stack);
foreach (make_paragraphs ($file, %transform))
{
# Sanity checks.
error $file, "blank line following trailing backslash:\n$_"
if /\\$/;
error $file, "comment following trailing backslash:\n$_"
if /\\#/;
if (/^$/)
{
$is_rule = 0;
# Stick empty line before the incoming macro or rule.
$spacing = "\n";
}
elsif (/$COMMENT_PATTERN/mso)
{
$is_rule = 0;
# Stick comments before the incoming macro or rule.
$comment = "$_\n";
}
# Handle inclusion of other files.
elsif (/$INCLUDE_PATTERN/o)
{
if ($cond ne 'FALSE')
{
my $file = ($is_am ? "$libdir/am/" : '') . $1;
# N-ary `.=' fails.
my ($com, $vars, $rules)
= file_contents_internal ($is_am, $file, %transform);
$comment .= $com;
$result_vars .= $vars;
$result_rules .= $rules;
}
}
# Handling the conditionals.
elsif (/$IF_PATTERN/o)
{
$cond = cond_stack_if ($1, $2, $file);
}
elsif (/$ELSE_PATTERN/o)
{
$cond = cond_stack_else ($1, $2, $file);
}
elsif (/$ENDIF_PATTERN/o)
{
$cond = cond_stack_endif ($1, $2, $file);
}
# Handling rules.
elsif (/$RULE_PATTERN/mso)
{
$is_rule = 1;
$discard_rule = 0;
# Separate relationship from optional actions: the first
# `new-line tab" not preceded by backslash (continuation
# line).
my $paragraph = $_;
/^(.*?)(?:(?<!\\)\n(\t.*))?$/s;
my ($relationship, $actions) = ($1, $2 || '');
# Separate targets from dependencies: the first colon.
$relationship =~ /^([^:]+\S+) *: *(.*)$/som;
my ($targets, $dependencies) = ($1, $2);
# Remove the escaped new lines.
# I don't know why, but I have to use a tmp $flat_deps.
my $flat_deps = &flatten ($dependencies);
my @deps = split (' ', $flat_deps);
foreach (split (' ' , $targets))
{
# FIXME: 1. We are not robust to people defining several targets
# at once, only some of them being in %dependencies. The
# actions from the targets in %dependencies are usually generated
# from the content of %actions, but if some targets in $targets
# are not in %dependencies the ELSE branch will output
# a rule for all $targets (i.e. the targets which are both
# in %dependencies and $targets will have two rules).
# FIXME: 2. The logic here is not able to output a
# multi-paragraph rule several time (e.g. for each conditional
# it is defined for) because it only knows the first paragraph.
# FIXME: 3. We are not robust to people defining a subset
# of a previously defined "multiple-target" rule. E.g.
# `foo:' after `foo bar:'.
# Output only if not in FALSE.
if (defined $dependencies{$_} && $cond ne 'FALSE')
{
&depend ($_, @deps);
if ($actions{$_})
{
$actions{$_} .= "\n$actions" if $actions;
}
else
{
$actions{$_} = $actions;
}
}
else
{
# Free-lance dependency. Output the rule for all the
# targets instead of one by one.
my @undefined_conds =
rule_define ($targets, $file,
$is_am ? TARGET_AUTOMAKE : TARGET_USER,
$cond || 'TRUE', $file);
for my $undefined_cond (@undefined_conds)
{
my $condparagraph = $paragraph;
$condparagraph =~ s/^/$undefined_cond/gm;
$result_rules .= "$spacing$comment$condparagraph\n";
}
if (scalar @undefined_conds == 0)
{
# Remember to discard next paragraphs
# if they belong to this rule.
# (but see also FIXME: #2 above.)
$discard_rule = 1;
}
$comment = $spacing = '';
last;
}
}
}
elsif (/$ASSIGNMENT_PATTERN/mso)
{
my ($var, $type, $val) = ($1, $2, $3);
error $file, "variable `$var' with trailing backslash"
if /\\$/;
$is_rule = 0;
# Accumulating variables must not be output.
append_comments ($cond || 'TRUE', $var, $spacing, $comment);
macro_define ($var, $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE,
$type, $cond, $val, $file)
if $cond ne 'FALSE';
push (@var_list, $var);
# If the user has set some variables we were in charge
# of (which is detected by the first reading of
# `header-vars.am'), we must not output them.
$result_vars .= "$spacing$comment$_\n"
if ($cond ne 'FALSE' && $type ne '+'
&& exists $var_owner{$var}{$cond || 'TRUE'}
&& $var_owner{$var}{$cond || 'TRUE'} == VAR_AUTOMAKE);
$comment = $spacing = '';
}
else
{
# This isn't an error; it is probably some tokens which
# configure is supposed to replace, such as `@SET-MAKE@',
# or some part of a rule cut by an if/endif.
if ($cond ne 'FALSE' && ! ($is_rule && $discard_rule))
{
s/^/make_condition (@cond_stack)/gme;
$result_rules .= "$spacing$comment$_\n";
}
$comment = $spacing = '';
}
}
err_am (@cond_stack ?
"unterminated conditionals: @cond_stack" :
"too many conditionals closed in include file")
if "@saved_cond_stack" ne "@cond_stack";
return ($comment, $result_vars, $result_rules);
}
# $CONTENTS
# &file_contents ($BASENAME, [%TRANSFORM])
# ----------------------------------------
# Return contents of a file from $libdir/am, automatically skipping
# macros or rules which are already known.
sub file_contents ($%)
{
my ($basename, %transform) = @_;
my ($comments, $variables, $rules) =
file_contents_internal (1, "$libdir/am/$basename.am", %transform);
return "$comments$variables$rules";
}
# $REGEXP
# &transform (%PAIRS)
# -------------------
# Foreach ($TOKEN, $VAL) in %PAIRS produce a replacement expression suitable
# for file_contents which:
# - replaces %$TOKEN% with $VAL,
# - enables/disables ?$TOKEN? and ?!$TOKEN?,
# - replaces %?$TOKEN% with TRUE or FALSE.
sub transform (%)
{
my (%pairs) = @_;
my $result = '';
while (my ($token, $val) = each %pairs)
{
$result .= "s/\Q%$token%\E/\Q$val\E/gm;";
if ($val)
{
$result .= "s/\Q?$token?\E//gm;s/^.*\Q?!$token?\E.*\\n//gm;";
$result .= "s/\Q%?$token%\E/TRUE/gm;";
}
else
{
$result .= "s/\Q?!$token?\E//gm;s/^.*\Q?$token?\E.*\\n//gm;";
$result .= "s/\Q%?$token%\E/FALSE/gm;";
}
}
return $result;
}
# &append_exeext ($MACRO)
# -----------------------
# Macro is an Automake magic macro which primary is PROGRAMS, e.g.
# bin_PROGRAMS. Make sure these programs have $(EXEEXT) appended.
sub append_exeext ($)
{
my ($macro) = @_;
prog_error "append_exeext ($macro)"
unless $macro =~ /_PROGRAMS$/;
my @conds = variable_conditions_recursive ($macro);
my @condvals;
foreach my $cond (@conds)
{
my @one_binlist = ();
my @condval = variable_value_as_list_recursive ($macro, $cond);
foreach my $rcurs (@condval)
{
# Skip autoconf substs. Also skip if the user
# already applied $(EXEEXT).
if ($rcurs =~ /^\@.*\@$/ || $rcurs =~ /\$\(EXEEXT\)$/)
{
push (@one_binlist, $rcurs);
}
else
{
push (@one_binlist, $rcurs . '$(EXEEXT)');
}
}
push (@condvals, $cond);
push (@condvals, "@one_binlist");
}
macro_delete ($macro);
while (@condvals)
{
my $cond = shift (@condvals);
my @val = split (' ', shift (@condvals));
define_pretty_variable ($macro, $cond, @val);
}
}
# @PREFIX
# &am_primary_prefixes ($PRIMARY, $CAN_DIST, @PREFIXES)
# -----------------------------------------------------
# Find all variable prefixes that are used for install directories. A
# prefix `zar' qualifies iff:
#
# * `zardir' is a variable.
# * `zar_PRIMARY' is a variable.
#
# As a side effect, it looks for misspellings. It is an error to have
# a variable ending in a "reserved" suffix whose prefix is unknown, eg
# "bni_PROGRAMS". However, unusual prefixes are allowed if a variable
# of the same name (with "dir" appended) exists. For instance, if the
# variable "zardir" is defined, then "zar_PROGRAMS" becomes valid.
# This is to provide a little extra flexibility in those cases which
# need it.
sub am_primary_prefixes ($$@)
{
my ($primary, $can_dist, @prefixes) = @_;
local $_;
my %valid = map { $_ => 0 } @prefixes;
$valid{'EXTRA'} = 0;
foreach my $varname (keys %var_value)
{
# Automake is allowed to define variables that look like primaries
# but which aren't. E.g. INSTALL_sh_DATA.
# Autoconf can also define variables like INSTALL_DATA, so
# ignore all configure variables (at least those which are not
# redefined in Makefile.am).
# FIXME: We should make sure that these variables are not
# conditionally defined (or else adjust the condition below).
next
if (exists $var_owner{$varname}
&& exists $var_owner{$varname}{'TRUE'}
&& $var_owner{$varname}{'TRUE'} != VAR_MAKEFILE);
if ($varname =~ /^(nobase_)?(dist_|nodist_)?(.*)_$primary$/)
{
my ($base, $dist, $X) = ($1 || '', $2 || '', $3 || '');
if ($dist ne '' && ! $can_dist)
{
err_var ($varname,
"invalid variable `$varname': `dist' is forbidden");
}
# Standard directories must be explicitly allowed.
elsif (! defined $valid{$X} && exists $standard_prefix{$X})
{
err_var ($varname,
"`${X}dir' is not a legitimate directory " .
"for `$primary'");
}
# A not explicitly valid directory is allowed if Xdir is defined.
elsif (! defined $valid{$X} &&
require_variables_for_macro ($varname, "`$varname' is used",
"${X}dir"))
{
# Nothing to do. Any error message has been output
# by require_variables_for_macro.
}
else
{
# Ensure all extended prefixes are actually used.
$valid{"$base$dist$X"} = 1;
}
}
}
# Return only those which are actually defined.
return sort grep { variable_defined ($_ . '_' . $primary) } keys %valid;
}
# Handle `where_HOW' variable magic. Does all lookups, generates
# install code, and possibly generates code to define the primary
# variable. The first argument is the name of the .am file to munge,
# the second argument is the primary variable (eg HEADERS), and all
# subsequent arguments are possible installation locations. Returns
# list of all values of all _HOW targets.
#
# FIXME: this should be rewritten to be cleaner. It should be broken
# up into multiple functions.
#
# Usage is: am_install_var (OPTION..., file, HOW, where...)
sub am_install_var
{
my (@args) = @_;
my $do_require = 1;
my $can_dist = 0;
my $default_dist = 0;
while (@args)
{
if ($args[0] eq '-noextra')
{
$do_require = 0;
}
elsif ($args[0] eq '-candist')
{
$can_dist = 1;
}
elsif ($args[0] eq '-defaultdist')
{
$default_dist = 1;
$can_dist = 1;
}
elsif ($args[0] !~ /^-/)
{
last;
}
shift (@args);
}
my ($file, $primary, @prefix) = @args;
# Now that configure substitutions are allowed in where_HOW
# variables, it is an error to actually define the primary. We
# allow `JAVA', as it is customarily used to mean the Java
# interpreter. This is but one of several Java hacks. Similarly,
# `PYTHON' is customarily used to mean the Python interpreter.
reject_var $primary, "`$primary' is an anachronism"
unless $primary eq 'JAVA' || $primary eq 'PYTHON';
# Get the prefixes which are valid and actually used.
@prefix = am_primary_prefixes ($primary, $can_dist, @prefix);
# If a primary includes a configure substitution, then the EXTRA_
# form is required. Otherwise we can't properly do our job.
my $require_extra;
my @used = ();
my @result = ();
# True if the iteration is the first one. Used for instance to
# output parts of the associated file only once.
my $first = 1;
foreach my $X (@prefix)
{
my $nodir_name = $X;
my $one_name = $X . '_' . $primary;
my $strip_subdir = 1;
# If subdir prefix should be preserved, do so.
if ($nodir_name =~ /^nobase_/)
{
$strip_subdir = 0;
$nodir_name =~ s/^nobase_//;
}
# If files should be distributed, do so.
my $dist_p = 0;
if ($can_dist)
{
$dist_p = (($default_dist && $nodir_name !~ /^nodist_/)
|| (! $default_dist && $nodir_name =~ /^dist_/));
$nodir_name =~ s/^(dist|nodist)_//;
}
# Append actual contents of where_PRIMARY variable to
# result.
foreach my $rcurs (&variable_value_as_list_recursive ($one_name, 'all'))
{
# Skip configure substitutions. Possibly bogus.
if ($rcurs =~ /^\@.*\@$/)
{
if ($nodir_name eq 'EXTRA')
{
err_var ($one_name,
"`$one_name' contains configure substitution, "
. "but shouldn't");
}
# Check here to make sure variables defined in
# configure.ac do not imply that EXTRA_PRIMARY
# must be defined.
elsif (! defined $configure_vars{$one_name})
{
$require_extra = $one_name
if $do_require;
}
next;
}
push (@result, $rcurs);
}
# A blatant hack: we rewrite each _PROGRAMS primary to include
# EXEEXT.
append_exeext ($one_name)
if $primary eq 'PROGRAMS';
# "EXTRA" shouldn't be used when generating clean targets,
# all, or install targets. We used to warn if EXTRA_FOO was
# defined uselessly, but this was annoying.
next
if $nodir_name eq 'EXTRA';
if ($nodir_name eq 'check')
{
push (@check, '$(' . $one_name . ')');
}
else
{
push (@used, '$(' . $one_name . ')');
}
# Is this to be installed?
my $install_p = $nodir_name ne 'noinst' && $nodir_name ne 'check';
# If so, with install-exec? (or install-data?).
my $exec_p = ($nodir_name =~ /$EXEC_DIR_PATTERN/o);
my $check_options_p = $install_p
&& defined $options{'std-options'};
# Singular form of $PRIMARY.
(my $one_primary = $primary) =~ s/S$//;
$output_rules .= &file_contents ($file,
('FIRST' => $first,
'PRIMARY' => $primary,
'ONE_PRIMARY' => $one_primary,
'DIR' => $X,
'NDIR' => $nodir_name,
'BASE' => $strip_subdir,
'EXEC' => $exec_p,
'INSTALL' => $install_p,
'DIST' => $dist_p,
'CK-OPTS' => $check_options_p));
$first = 0;
}
# The JAVA variable is used as the name of the Java interpreter.
# The PYTHON variable is used as the name of the Python interpreter.
if (@used && $primary ne 'JAVA' && $primary ne 'PYTHON')
{
# Define it.
define_pretty_variable ($primary, '', @used);
$output_vars .= "\n";
}
err_var ($require_extra,
"`$require_extra' contains configure substitution,\n"
. "but `EXTRA_$primary' not defined")
if ($require_extra && ! variable_defined ('EXTRA_' . $primary));
# Push here because PRIMARY might be configure time determined.
push (@all, '$(' . $primary . ')')
if @used && $primary ne 'JAVA' && $primary ne 'PYTHON';
# Make the result unique. This lets the user use conditionals in
# a natural way, but still lets us program lazily -- we don't have
# to worry about handling a particular object more than once.
return uniq (sort @result);
}
################################################################
# Each key in this hash is the name of a directory holding a
# Makefile.in. These variables are local to `is_make_dir'.
my %make_dirs = ();
my $make_dirs_set = 0;
sub is_make_dir
{
my ($dir) = @_;
if (! $make_dirs_set)
{
foreach my $iter (@configure_input_files)
{
$make_dirs{dirname ($iter)} = 1;
}
# We also want to notice Makefile.in's.
foreach my $iter (@other_input_files)
{
if ($iter =~ /Makefile\.in$/)
{
$make_dirs{dirname ($iter)} = 1;
}
}
$make_dirs_set = 1;
}
return defined $make_dirs{$dir};
}
################################################################
# This variable is local to the "require file" set of functions.
my @require_file_paths = ();
# &maybe_push_required_file ($DIR, $FILE, $FULLFILE)
# --------------------------------------------------
# See if we want to push this file onto dist_common. This function
# encodes the rules for deciding when to do so.
sub maybe_push_required_file
{
my ($dir, $file, $fullfile) = @_;
if ($dir eq $relative_dir)
{
push_dist_common ($file);
return 1;
}
elsif ($relative_dir eq '.' && ! &is_make_dir ($dir))
{
# If we are doing the topmost directory, and the file is in a
# subdir which does not have a Makefile, then we distribute it
# here.
push_dist_common ($fullfile);
return 1;
}
return 0;
}
# &require_file_internal ($WHERE, $MYSTRICT, @FILES)
# --------------------------------------------------
# Verify that the file must exist in the current directory.
# $MYSTRICT is the strictness level at which this file becomes required.
#
# Must set require_file_paths before calling this function.
# require_file_paths is set to hold a single directory (the one in
# which the first file was found) before return.
sub require_file_internal ($$@)
{
my ($where, $mystrict, @files) = @_;
foreach my $file (@files)
{
my $fullfile;
my $errdir;
my $errfile;
my $save_dir;
my $found_it = 0;
my $dangling_sym = 0;
foreach my $dir (@require_file_paths)
{
$fullfile = $dir . "/" . $file;
$errdir = $dir unless $errdir;
# Use different name for "error filename". Otherwise on
# an error the bad file will be reported as eg
# `../../install-sh' when using the default
# config_aux_path.
$errfile = $errdir . '/' . $file;
if (-l $fullfile && ! -f $fullfile)
{
$dangling_sym = 1;
last;
}
elsif (-f $fullfile)
{
$found_it = 1;
maybe_push_required_file ($dir, $file, $fullfile);
$save_dir = $dir;
last;
}
}
# `--force-missing' only has an effect if `--add-missing' is
# specified.
if ($found_it && (! $add_missing || ! $force_missing))
{
# Prune the path list.
@require_file_paths = $save_dir;
}
else
{
# If we've already looked for it, we're done. You might
# wonder why we don't do this before searching for the
# file. If we do that, then something like
# AC_OUTPUT(subdir/foo foo) will fail to put foo.in into
# DIST_COMMON.
if (! $found_it)
{
next if defined $require_file_found{$fullfile};
$require_file_found{$fullfile} = 1;
}
if ($strictness >= $mystrict)
{
if ($dangling_sym && $add_missing)
{
unlink ($fullfile);
}
my $trailer = '';
my $suppress = 0;
# Only install missing files according to our desired
# strictness level.
my $message = "required file `$errfile' not found";
if ($add_missing)
{
if (-f ("$libdir/$file"))
{
$suppress = 1;
# Install the missing file. Symlink if we
# can, copy if we must. Note: delete the file
# first, in case it is a dangling symlink.
$message = "installing `$errfile'";
# Windows Perl will hang if we try to delete a
# file that doesn't exist.
unlink ($errfile) if -f $errfile;
if ($symlink_exists && ! $copy_missing)
{
if (! symlink ("$libdir/$file", $errfile))
{
$suppress = 0;
$trailer = "; error while making link: $!";
}
}
elsif (system ('cp', "$libdir/$file", $errfile))
{
$suppress = 0;
$trailer = "\n error while copying";
}
}
if (! maybe_push_required_file (dirname ($errfile),
$file, $errfile))
{
if (! $found_it)
{
# We have added the file but could not push it
# into DIST_COMMON (probably because this is
# an auxiliary file and we are not processing
# the top level Makefile). This is unfortunate,
# since it means we are using a file which is not
# distributed!
# Get Automake to be run again: on the second
# run the file will be found, and pushed into
# the toplevel DIST_COMMON automatically.
$automake_needs_to_reprocess_all_files = 1;
}
}
# Prune the path list.
@require_file_paths = &dirname ($errfile);
}
# If --force-missing was specified, and we have
# actually found the file, then do nothing.
next
if $found_it && $force_missing;
# If we couldn' install the file, but it is a target in
# the Makefile, don't print anything. This allows files
# like README, AUTHORS, or THANKS to be generated.
next
if !$suppress && target_defined ($file);
msg ($suppress ? 'note' : 'error', $where, "$message$trailer");
}
}
}
}
# &require_file ($WHERE, $MYSTRICT, @FILES)
# -----------------------------------------
sub require_file ($$@)
{
my ($where, $mystrict, @files) = @_;
@require_file_paths = $relative_dir;
require_file_internal ($where, $mystrict, @files);
}
# &require_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
# -----------------------------------------------------------
sub require_file_with_macro ($$$@)
{
my ($cond, $macro, $mystrict, @files) = @_;
require_file ($var_location{$macro}{$cond}, $mystrict, @files);
}
# &require_conf_file ($WHERE, $MYSTRICT, @FILES)
# ----------------------------------------------
# Looks in configuration path, as specified by AC_CONFIG_AUX_DIR.
sub require_conf_file ($$@)
{
my ($where, $mystrict, @files) = @_;
@require_file_paths = @config_aux_path;
require_file_internal ($where, $mystrict, @files);
my $dir = $require_file_paths[0];
@config_aux_path = @require_file_paths;
# Avoid unsightly '/.'s.
$config_aux_dir = '$(top_srcdir)' . ($dir eq '.' ? "" : "/$dir");
}
# &require_conf_file_with_macro ($COND, $MACRO, $MYSTRICT, @FILES)
# ----------------------------------------------------------------
sub require_conf_file_with_macro ($$$@)
{
my ($cond, $macro, $mystrict, @files) = @_;
require_conf_file ($var_location{$macro}{$cond}, $mystrict, @files);
}
################################################################
# &require_build_directory ($DIRECTORY)
# ------------------------------------
# Emit rules to create $DIRECTORY if needed, and return
# the file that any target requiring this directory should be made
# dependent upon.
sub require_build_directory ($)
{
my $directory = shift;
my $dirstamp = "$directory/\$(am__dirstamp)";
# Don't emit the rule twice.
if (! defined $directory_map{$directory})
{
$directory_map{$directory} = 1;
# Set a variable for the dirstamp basename.
define_pretty_variable ('am__dirstamp', 'TRUE',
'$(am__leading_dot)dirstamp')
unless variable_defined ('am__dirstamp');
# Directory must be removed by `make distclean'.
$clean_files{$dirstamp} = DIST_CLEAN;
$output_rules .= ("$dirstamp:\n"
. "\t\@\$(mkinstalldirs) $directory\n"
. "\t\@: > $dirstamp\n");
}
return $dirstamp;
}
# &require_build_directory_maybe ($FILE)
# --------------------------------------
# If $FILE lies in a subdirectory, emit a rule to create this
# directory and return the file that $FILE should be made
# dependent upon. Otherwise, just return the empty string.
sub require_build_directory_maybe ($)
{
my $file = shift;
my $directory = dirname ($file);
if ($directory ne '.')
{
return require_build_directory ($directory);
}
else
{
return '';
}
}
################################################################
# Push a list of files onto dist_common.
sub push_dist_common
{
prog_error "push_dist_common run after handle_dist"
if $handle_dist_run;
macro_define ('DIST_COMMON', VAR_AUTOMAKE, '+', '', "@_", '');
}
# Set strictness.
sub set_strictness
{
$strictness_name = $_[0];
# FIXME: 'portability' warnings are currently disabled by default.
# Eventually we want to turn them on in GNU and GNITS modes, but
# we don't do this yet in Automake 1.7 to help the 1.6/1.7 transition.
#
# Indeed there would be only two ways to get rid of these new warnings:
# 1. adjusting Makefile.am
# This is not always easy (or wanted). Consider %-rules or
# $(function args) variables.
# 2. using -Wno-portability
# This means there is no way to have the same Makefile.am
# working both with Automake 1.6 and 1.7 (since 1.6 does not
# understand -Wno-portability).
#
# In Automake 1.8 (or whatever it is called) we can turn these
# warnings on, since -Wno-portability will not be an issue for
# the 1.7/1.8 transition.
if ($strictness_name eq 'gnu')
{
$strictness = GNU;
setup_channel 'error-gnu', silent => 0;
setup_channel 'error-gnu/warn', silent => 0, type => 'error';
setup_channel 'error-gnits', silent => 1;
# setup_channel 'portability', silent => 0;
setup_channel 'gnu', silent => 0;
}
elsif ($strictness_name eq 'gnits')
{
$strictness = GNITS;
setup_channel 'error-gnu', silent => 0;
setup_channel 'error-gnu/warn', silent => 0, type => 'error';
setup_channel 'error-gnits', silent => 0;
# setup_channel 'portability', silent => 0;
setup_channel 'gnu', silent => 0;
}
elsif ($strictness_name eq 'foreign')
{
$strictness = FOREIGN;
setup_channel 'error-gnu', silent => 1;
setup_channel 'error-gnu/warn', silent => 0, type => 'warning';
setup_channel 'error-gnits', silent => 1;
# setup_channel 'portability', silent => 1;
setup_channel 'gnu', silent => 1;
}
else
{
prog_error "level `$strictness_name' not recognized\n";
}
}
################################################################
# Glob something. Do this to avoid indentation screwups everywhere we
# want to glob. Gross!
sub my_glob
{
my ($pat) = @_;
return <${pat}>;
}
################################################################
# INTEGER
# require_variables ($WHERE, $REASON, $COND, @VARIABLES)
# ------------------------------------------------------
# Make sure that each supplied variable is defined in $COND.
# Otherwise, issue a warning. If we know which macro can
# define this variable, hint the user.
# Return the number of undefined variables.
sub require_variables ($$$@)
{
my ($where, $reason, $cond, @vars) = @_;
my $res = 0;
$reason .= ' but ' unless $reason eq '';
VARIABLE:
foreach my $var (@vars)
{
# Nothing to do if the variable exists. The $configure_vars test
# needed for strange variables like AMDEPBACKSLASH or ANSI2KNR
# that are AC_SUBST'ed but never macro_define'd.
next VARIABLE
if ((exists $var_value{$var} && exists $var_value{$var}{$cond})
|| exists $configure_vars{$var});
my @undef_cond = variable_not_always_defined_in_cond $var, $cond;
next VARIABLE
unless @undef_cond;
my $text = "$reason`$var' is undefined\n";
if (@undef_cond && $undef_cond[0] ne 'TRUE')
{
$text .= ("in the following conditions:\n "
. join ("\n ", @undef_cond));
}
++$res;
if (exists $am_macro_for_var{$var})
{
$text .= "\nThe usual way to define `$var' is to add "
. "`$am_macro_for_var{$var}'\nto `$configure_ac' and run "
. "`aclocal' and `autoconf' again.";
}
elsif (exists $ac_macro_for_var{$var})
{
$text .= "\nThe usual way to define `$var' is to add "
. "`$ac_macro_for_var{$var}'\nto `$configure_ac' and run "
. "`autoconf' again.";
}
error $where, $text, uniq_scope => US_GLOBAL;
}
return $res;
}
# INTEGER
# require_variables_for_macro ($MACRO, $REASON, @VARIABLES)
# ---------------------------------------------------------
# Same as require_variables, but take a macro mame as first argument.
sub require_variables_for_macro ($$@)
{
my ($macro, $reason, @args) = @_;
for my $cond (keys %{$var_value{$macro}})
{
return require_variables ($var_location{$macro}{$cond}, $reason,
$cond, @args);
}
}
# Print usage information.
sub usage ()
{
print "Usage: $0 [OPTION] ... [Makefile]...
Generate Makefile.in for configure from Makefile.am.
Operation modes:
--help print this help, then exit
--version print version number, then exit
-v, --verbose verbosely list files processed
--no-force only update Makefile.in's that are out of date
-W, --warnings=CATEGORY report the warnings falling in CATEGORY
Dependency tracking:
-i, --ignore-deps disable dependency tracking code
--include-deps enable dependency tracking code
Flavors:
--cygnus assume program is part of Cygnus-style tree
--foreign set strictness to foreign
--gnits set strictness to gnits
--gnu set strictness to gnu
Library files:
-a, --add-missing add missing standard files to package
--libdir=DIR directory storing library files
-c, --copy with -a, copy missing files (default is symlink)
-f, --force-missing force update of standard files
Warning categories include:
`gnu' GNU coding standards (default in gnu and gnits modes)
`obsolete' obsolete features or constructions
`portability' portability issues
`syntax' dubious syntactic constructs (default)
`unsupported' unsupported or incomplete features (default)
`all' all the warnings
`no-CATEGORY' turn off warnings in CATEGORY
`none' turn off all the warnings
`error' treat warnings as errors
";
my ($last, @lcomm);
$last = '';
foreach my $iter (sort ((@common_files, @common_sometimes)))
{
push (@lcomm, $iter) unless $iter eq $last;
$last = $iter;
}
my @four;
print "\nFiles which are automatically distributed, if found:\n";
format USAGE_FORMAT =
@<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<< @<<<<<<<<<<<<<<<<
$four[0], $four[1], $four[2], $four[3]
.
$~ = "USAGE_FORMAT";
my $cols = 4;
my $rows = int(@lcomm / $cols);
my $rest = @lcomm % $cols;
if ($rest)
{
$rows++;
}
else
{
$rest = $cols;
}
for (my $y = 0; $y < $rows; $y++)
{
@four = ("", "", "", "");
for (my $x = 0; $x < $cols; $x++)
{
last if $y + 1 == $rows && $x == $rest;
my $idx = (($x > $rest)
? ($rows * $rest + ($rows - 1) * ($x - $rest))
: ($rows * $x));
$idx += $y;
$four[$x] = $lcomm[$idx];
}
write;
}
print "\nReport bugs to <bug-automake\@gnu.org>.\n";
# --help always returns 0 per GNU standards.
exit 0;
}
# &version ()
# -----------
# Print version information
sub version ()
{
print <<EOF;
automake (GNU $PACKAGE) $VERSION
Written by Tom Tromey <tromey\@redhat.com>.
Copyright 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
EOF
# --version always returns 0 per GNU standards.
exit 0;
}
### Setup "GNU" style for perl-mode and cperl-mode.
## Local Variables:
## perl-indent-level: 2
## perl-continued-statement-offset: 2
## perl-continued-brace-offset: 0
## perl-brace-offset: 0
## perl-brace-imaginary-offset: 0
## perl-label-offset: -2
## cperl-indent-level: 2
## cperl-brace-offset: 0
## cperl-continued-brace-offset: 0
## cperl-label-offset: -2
## cperl-extra-newline-before-brace: t
## cperl-merge-trailing-else: nil
## cperl-continued-statement-offset: 2
## End:
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