source: trunk/essentials/sys-devel/automake-1.9/tests/cond29.test

#!/bin/sh
# Copyright (C) 2003  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 Automake; see the file COPYING.  If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.

# Check that many conditions do not lead to combinatorial explosion.
# (This is related to PR/352.)
#
# On this test, Automake 1.7.x would compute all 2**22 = 4194304
# possible combinations of conditionals (it would do this five times,
# to define a01_DEPENDENCIES, a02_DEPENDENCIES, a03_OBJECTS,
# a04_OBJECTS, and to rewrite bin_PROGRAM), eating all memory, swap,
# or cpu time it can found.  Although this test won't print `FAIL' if
# it fails, it will take long enough so it can't go unnoticed.

. ./defs

set -e

echo AC_PROG_CC >>configure.in

cat >Makefile.am <<EOF
bin_PROGRAMS = a
a02_LDADD =
a03_SOURCES =
EOF

for i in 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22; do
cat >>Makefile.am <<EOF
if C$i
bin_PROGRAMS += a$i
a01_LDADD = foo${i}.o
a02_LDADD += bar${i}.o
a03_SOURCES += baz${i}.c
a04_SOURCES = quux${i}.c
endif C$i
EOF
echo "AM_CONDITIONAL([C$i], [:])" >>configure.in
done

$ACLOCAL
$AUTOMAKE