#! /bin/sh
# Copyright (C) 2002  Free Software Foundation, Inc.
#
# This file is part of GNU Automake.
#
# GNU Automake 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.
#
# GNU Automake 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 autoconf; see the file COPYING.  If not, write to
# the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.

# Test the += diagnostics.

. ./defs || exit 1

cat >>configure.in <<EOF
AM_CONDITIONAL(COND1, true)
AM_CONDITIONAL(COND2, true)
AM_CONDITIONAL(COND3, true)
EOF

cat > Makefile.am << 'END'
if COND1
  C = c
if COND2
    A = a
    B = aa
    C += cc
else
    A = b
    B = bb
endif
  A += c
else
  A = d
endif
A += e

if COND3
  A += f
  B = cc
endif
B += dd
END

$ACLOCAL || exit 1
$AUTOMAKE 2>stderr && exit 1

cat stderr # for debugging

# We expect the following diagnostic:
#
# Makefile.am:19: Cannot apply `+=' because `B' is not defined in
# Makefile.am:19: the following conditions:
# Makefile.am:19:   COND3_FALSE
# Makefile.am:19:   COND1_FALSE COND2_FALSE
# Makefile.am:19:   COND1_FALSE COND2_TRUE
# Makefile.am:19: Either define `B' in these conditions, or use
# Makefile.am:19: `+=' in the same conditions as the definitions.
#
# It would be nice if Automake could print only COND3_FALSE and
# COND1_FALSE (merging the last two conditions), so we'll support
# this case in the check too.

# Are COND3_FALSE and COND1_FALSE mentioned?
grep ':.*COND3_FALSE$' stderr || exit 1
grep ':.*COND1_FALSE' stderr || exit 1
# Make sure there are no more than three missing conditions.
test `grep ':  ' stderr | wc -l` -le 3 || exit 1

: