/*
 *      dnsutl - utilities to make DNS easier to configure
 *      Copyright (C) 1991-1993, 1995, 1996, 1999-2001, 2006, 2007 Peter Miller
 *
 *      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 3 of the License, 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, see
 *      <http://www.gnu.org/licenses/>.
 */

/*
 *       You may want to change some of these options.
 * ([debug] must be defined, even if empty, use comments.)
 *
 * Change ``main.h'' to add the DEBUG define.
 * All files reference this file, so this will cause recompilation
 * of all files, both in the change and in the baseline.
 */
debug = -g;

/*
 * Unlink targets before running recipe bodies.
 */
set unlink;

/*
 * Create directories above targets before running recipe bodies.
 */
set mkdir;

/*
 * Update file times if necessary, to ensure outputs are newer then inputs.
 * On fast machines, that happens frequently for transitive dependencies.
 */
set time-adjust;

/*
 * Make sure the [project], [change] and [version] variables are set.
 */
#ifndef project
echo "The [project] variable was not set from the command line." set silent;
echo "If you want to do a build with is not a development build" set silent;
echo "or an integration build, use the make command, not cook." set silent;
fail;
#endif
#ifndef change
echo "The [change] variable was not set from the command line." set silent;
echo "If you want to do a build with is not a development build" set silent;
echo "or an integration build, use the make command, not cook." set silent;
fail;
#endif
#ifndef version
echo "The [version] variable was not set from the command line." set silent;
echo "If you want to do a build with is not a development build" set silent;
echo "or an integration build, use the make command, not cook." set silent;
fail;
#endif
#ifndef arch
echo "The [arch] variable was not set from the command line." set silent;
echo "If you want to do a build with is not a development build" set silent;
echo "or an integration build, use the make command, not cook." set silent;
fail;
#endif


/*
 * The first item in search list should be the absolute path of the
 * current directory.  Assume that it is.
 */
search_list = .;
search_tmp = [tail [split ':' [search_path]]];

/*
 * Try to shorten the search path in command lines, too.
 *
 * This takes a little getting used to....
 * 1. For development builds, the search path is dev dir, then branch bl,
 *    then ... project bl.  Thus, bl in a dev dir winds up pointing to
 *    the branch repository.
 * 2. For integration builds, aegis deliberately omits the branch
 *    baseline from the path, but include's the branch's parents and
 *    ancestors.  Thus, bl in an int dir winds up pointing to the
 *    branch's parent's reporitory.
 * The idea is that integration builds in a branch are like a
 * development build of the branch's dev dir.
 */
search_name = bl;
loop
{
        search_dir = [head [search_tmp]];
        if [not [search_dir]] then
                loopstop;
        search_tmp = [tail [search_tmp]];

        if [not [exists [search_name]]] then
                ln -s [search_dir] [search_name]
                        set clearstat;
        search_list = [search_list] [search_name];
        search_name = [search_name]bl;
}

/*
 * If this is a development build, the version will be x.y.Czzz,
 * so look to see if there is a C in the version string.
 */
if [match_mask %1C%2 [version]] then
{
        /*
         * The develop_begin_command in the config file
         * always creates the "bl" symbolic link.
         */
        baseline = bl;
}

if [not [defined baseline]] then
{
        /*
         * Turn on aggressive updating to ensure the smallest possible
         * range of mod times at aeipass.  This also ensures mod time
         * consistency on fast machines.
         */
        set time-adjust-back;
}
else
{
        /*
         * Use finger prints for development builds.
         * They avoid much of the tedium.
         */
        set fingerprint;
}

/*
 * determine the short version:
 * no change or delta number
 */
version_short = [fromto %1.C%2 %1 [subst D C [version]]];

version_shorter = [split "." [version_short]] _ _;
version_shorter = [unsplit "." [word 1 [version_shorter]]
        [word 2 [version_shorter]]];
project_short = [fromto %.[version_short] % [project]];
project_minus = [project_short]-[version_short];


/*
 * This file is generated by autoconf.
 * It is architecture specific.
 * If it is not found (not cooked yet) the following
 * symbols will be undefined.
 *
 *      Must be included *after* the search_list is defined.
 */
#include-cooked [arch]/etc/Howto.conf
if [not [defined prefix]] then
        prefix = /usr/local;
if [not [defined exec_prefix]] then
        exec_prefix = [prefix];
if [not [defined yacc]] then
        yacc = yacc;
if [not [defined libs]] then
        libs = ;
if [not [defined cc]] then
        cc = ['if' [find_command gcc] 'then' gcc 'else' cc];


/*
 * The default recipe
 */
all =
        [arch]/common/config.h
        [arch]/Makefile
        ;

all: [all];

/*
 * The source files.
 * This is given to us by aegis.
 */
vs_file = common/patchlevel.h;
change_files =
        [collect aegis -l chafil -ter -p [project] -c [change]]
        [vs_file]
        ;
project_files =
        [collect aegis -l profil -ter -p [project] -c [change]]
        ;
source_files =
        [sort [stringset [project_files] [change_files]]]
        ;
version_obj_file = [arch]/common/version-stmp.o;
common_lib_obj =
        [stringset
                [fromto common/%0%.c [arch]/common/%0%.o
                        [match_mask common/%0%.c [source_files]]
                ]
                [fromto common/%0%.y [arch]/common/%0%.gen.o
                        [match_mask common/%0%.y [source_files]]
                ]
        -
                [version_obj_file]
        ]
        ;
common_obj =
        [arch]/common/libcommon.a
        [version_obj_file]
        ;

/*
 * Form the list of commands from the source file names.
 * This means we don't need to change the cookbook for every new command.
 */
commands = [fromto %/main.c % [match_mask dns%/main.c [source_files]]];

loop cmd = [commands]
{
        all += [arch]/bin/[cmd];
        [cmd]_obj =
                [fromto [cmd]/%0%.c [arch]/[cmd]/%0%.o
                        [match_mask [cmd]/%0%.c [source_files]]
                ]
                [fromto [cmd]/%0%.y [arch]/[cmd]/%0%.gen.o
                        [match_mask [cmd]/%0%.y [source_files]]
                ]
                [common_obj]
                ;
}


/*
 * how to compile C sources
 */
cc = cc;
cc_flags = -O2 [debug];
cc_include_flags = ;

/*
 * this next section is for gcc
 *      comment it out if you don't have gcc
 *
 * The gcc include files MUST be first.
 */
cc = gcc;
cc_flags += -ansi -Wall -Wextra -Wwrite-strings -Wold-style-definition
        -Wshadow -Wstrict-prototypes -Wmissing-prototypes
        -Wmissing-declarations -Wpointer-arith;

/*
 * For development builds, on the primary architecture, all warnings are
 * to be treated as errors; this ensures the cleanest possible code.
 */
if [defined baseline] then
if [in [arch] linux-i386] then
        cc_flags += -Werror;

/*
 * include files from common
 */
cc_include_flags = [cc_include_flags]
        [prepost -I /[arch]/common [search_list]]
        [prepost -I /common [search_list]]
        ;

/*
 * build .o from .c
 */
[arch]/%1/%0%2.o: %1/%0%2.c
{
        if [defined %2_flags] then
                extra = [%2_flags];
        else
                extra = ;
        [cc]
                [stringset
                        [prepost -I /[arch]/%1 [search_list]]
                        [prepost -I /%1 [search_list]]
                        [cc_include_flags]
                ]
                [stringset [cc_flags] [extra]]
                -c [resolve %1/%0%2.c]
                ['if' [in gcc [cc]] 'then' -o [target]]
                ;
        if [not [in gcc [cc]]] then
                mv %2.o %1/%0%2.o;
}


/*
 * build the program
 */

[arch]/bin/%: [%_obj]
{
        [cc] [debug] -o [target] [resolve [%_obj]] [libs];
        chmod og\=u-w [target];
}


/*
 * There is a special list of files you must use, in preference to the
 * standard C files.  This ensures appropriate operating system insulation
 * is always in place.
 */
c_incl_excludes =
        [fromto common/ac/%0%.h -ex\=%0%.h
                [match_mask common/ac/%0%.h [source_files]]
        ];

%1/%0%2.c.d: %1/%0%2.c
        set no-cascade
{
        c_incl
                -nc     /* no cache */
                -ns     /* no system headers */
                -eia    /* empty if absent */
                -nrec   /* no recursion */
                [stringset
                        [prepost -I /[arch]/%1 [search_list]]
                        [prepost -I /%1 [search_list]]
                        [cc_include_flags]
                ]
                -prefix "'cascade %1/%0%2.c ='"
                -suffix "';'"
                [resolve %1/%0%2.c]
                -nsri /* no source relative includes */
                [prepost "-rlp=" "" [search_list]] /* remove leading path */
                /* -rlp [arch] / * remove leading architecture */
                ['if' [not [filter common/ac/%%0%% %1/%0%2.c]] 'then'
                        [c_incl_excludes]]
                -o [target];
}


%1/%0%2.h.d: %1/%0%2.h: [arch]/common/config.h
        set no-cascade
{
        c_incl
                -nc     /* no cache */
                -ns     /* no system headers */
                -eia    /* empty if absent */
                -nrec   /* no recursion */
                [stringset
                        [prepost -I /[arch]/%1 [search_list]]
                        [prepost -I /%1 [search_list]]
                        [cc_include_flags]
                ]
                -prefix "'cascade %1/%0%2.c ='"
                -suffix "';'"
                [resolve %1/%0%2.h]
                -nsri /* no source relative includes */
                [prepost "-rlp=" "" [search_list]] /* remove leading path */
                /* -rlp [arch] / * remove leading architecture */
                ['if' [not [filter common/ac/%%0%% %1/%0%2.h]] 'then'
                        [c_incl_excludes]]
                -o [target];
}

c-dep-files =
        [fromto %0%.c %0%.c.d [match_mask %0%.c [source_files]]]
        [fromto %0%.y %0%.gen.c.d [match_mask %0%.y [source_files]]]
        ;
h-dep-files =
        [fromto %0% %0%.d [match_mask %0%.h [source_files]]]
        [fromto %0%.y %0%.gen.h.d [match_mask %0%.y [source_files]]]
        ;

ac-h-files = [match_mask common/ac/%0%.h [source_files]] ;
#if [count [ac-h-files]]
cascade [ac-h-files] = [arch]/common/config.h;
#endif

#include-cooked-nowarn [c-dep-files] [h-dep-files]


/*
 * The version stamp is to be updated for every
 * integration and development build.
 * (The integrate_begin_command in the config file
 * deletes them for integration builds.)
 */

function copyright_years = {
        return [collect
                aegis -list version -p [project] -c [change]
                | gawk "-F'[[\\\\]]'" "'/^copyright_years/{print $2}'"
        ];
}

[vs_file]:
        set shallow
{
        echo "'#define PATCHLEVEL \""[version]"\"'" > [target];
        echo "'#define COPYRIGHT_YEARS \""[copyright_years]"\"'" >> [target];
}


etc/version.so:
        set ['if' [not [defined baseline]] 'then' shallow]
{
        echo "'.ds V) "[version]"'" > etc/version.so;
        echo "'.ds v) "[version_short]"'" >> etc/version.so;
        /*
        aegis -list version -p [project] -c [change]
                | gawk -F'\'"\'' "'/previous/{print $2}'"
                | gawk -F. "'{print \".ds w) \"$1\".\"$2}'"
                >> etc/version.so;
        */
        echo "'.ds Y) "[copyright_years]"'" >> etc/version.so;
}


/*
 * building a library of the common directory
 */

ranlib = [find_command ranlib];

[arch]/%/lib%.a: [%_lib_obj]
{
        ar cq [target] [resolve [%_lib_obj]];
        if [ranlib] then
                [ranlib] [target];
}

/*
 * Catch 22: need to know you need to include them, so you can check to
 * see if you need to include them.  Sigh.
 */
cascade man1/copyright.so = etc/version.so;
cascade man1/BUILDING.so = etc/version.so;
cascade common/version-stmp.c = [vs_file];
cascade dns-boot-check/lex.c = dns-boot-check/gram.gen.h;

/*
 * documentation and stuff
 */
#include-cooked etc/documents.cook

/*
 * archive stuff
 */
#include-cooked etc/archive.cook

/*
 * autoconf stuff
 */
#include-cooked etc/autoconf.cook

/*
 * yacc stuff
 */
#include-cooked etc/yacc.cook
#include-cooked etc/tags.cook

gram.gen_flags = - -Werror;