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#! /bin/sh
# Copyright (C) 2003-2021 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, see <https://www.gnu.org/licenses/>.
# Make sure aclocal.m4 is rebuilt whenever a configure
# dependency changes. Test for acinclude.m4 and VPATH too.
. test-init.sh
cat >> configure.ac << 'END'
SOME_DEFS
AC_CONFIG_FILES([sub/Makefile])
AC_CONFIG_MACRO_DIR([m4])
AC_OUTPUT
END
cat > Makefile.am << 'END'
SUBDIRS = sub
END
mkdir sub
: > sub/Makefile.am
mkdir m4
echo 'AC_DEFUN([SOME_DEFS], [])' > m4/somedefs.m4
echo 'AC_DEFUN([MORE_DEFS], [AC_SUBST([GREPME])])' > m4/moredefs.m4
$ACLOCAL
$AUTOCONF
$AUTOMAKE --copy --add-missing
mkdir build
cd build
../configure
$MAKE
# Modified configure dependencies must be newer than config.status.
$sleep
# Update an aclocal.m4 dependency, then make sure all Makefiles
# are updated, even from a sub-directory.
echo 'AC_DEFUN([SOME_DEFS], [MORE_DEFS])' > ../m4/somedefs.m4
# Because aclocal will run again, it should also pick up acinclude.m4.
echo 'AC_SUBST([METOO])' > ../acinclude.m4
cd sub
$MAKE
cd ..
grep GREPME Makefile
grep GREPME sub/Makefile
grep GREPME sub/Makefile
grep METOO Makefile
grep METOO sub/Makefile
grep METOO sub/Makefile
# Make sure configure dependencies are distributed.
$MAKE distdir
test -f $me-1.0/m4/moredefs.m4
test -f $me-1.0/m4/somedefs.m4
test -f $me-1.0/acinclude.m4
:
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