#							-*- Autotest -*-

AT_BANNER([Compatibility with external tools and macros.])

# Copyright (C) 2000-2007, 2009-2017, 2020-2021 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 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 <https://www.gnu.org/licenses/>.


## --------- ##
## Libtool.  ##
## --------- ##

AT_SETUP([Libtool])

# Skip this test if there is no libtoolize.
AT_CHECK([libtoolize --version || exit 77],
	 [ignore], [ignore], [ignore])
# Modern Libtool has further tests for compatibility with older autoconf;
# from the Autoconf side, we will merely assume newer libtool.
AT_CHECK([[
case `libtoolize --version |
      sed -n '/^.* \([0-9][0-9.a-z]*\)$/{
		s//\1/
		p
		q
	}'` in
  0.*    ) exit 77;;
  1.*    ) exit 77;;
esac]],
	 [ignore], [ignore], [ignore])

# Using a configure.ac, have libtoolize confess where libtool.m4 is.
AT_DATA([configure.ac],
[[AC_INIT
# State that we explicitly want auxiliary files here, so libtoolize
# won't pollute files outside the test directory.
AC_CONFIG_AUX_DIR([.])
AC_PROG_LIBTOOL
]])
AT_CHECK([LC_ALL=C libtoolize -i], [0], [stdout], [ignore])

# Some broken libtoolize fail to install a functional config.guess.
AT_CHECK([LC_ALL=C ./config.guess || exit 77], [], [ignore], [ignore])

# Make sure at-path contains something valid, and let the test suite
# display it when verbose.  And fail, skipping would too easily hide
# problems.
AT_CHECK([sed -n ["s,^[^']*[\`']\\(/[^']*\\)'.*,\\1,p"] stdout], [0], [stdout])
AT_CHECK([test -f "`sed -n 1p stdout`"])

# Older libtoolize installed everything but install-sh...
AT_CHECK([test -f install-sh || touch install-sh])

# Build the concatenation of libtool.m4 and configure.ac.
AT_CHECK([[sed 's/.*/m4''_include([&])/' stdout]], [0], [stdout])
AT_CHECK([mv stdout aclocal.m4])
cat >configure.ac <<_EOF
AC_INIT
AC_CONFIG_AUX_DIR([.])
AC_CANONICAL_SYSTEM
AC_PROG_LIBTOOL
_EOF

# FIXME: Once Libtool really fixed, stop ignoring stderr.
AT_CHECK_AUTOCONF([], [], [], [ignore])

# Ignore stderr, because ltconfig always loads the cache, which is
# /dev/null, and some shells choke on this.  For instance with Bash
# 2.05, you get:
#
#   loading cache /dev/null within ltconfig
#   ./ltconfig: .: /dev/null: not a regular file
#
# But the script executes properly.
AT_CHECK_CONFIGURE([], [], [], [ignore])

AT_CLEANUP


AT_SETUP([shtool])

AT_DATA([configure.ac],
[[AC_INIT([shtool test], [1.0])
AC_CONFIG_AUX_DIR([build-aux])
AC_PATH_PROG([SHTOOL], [shtool], [false])
AC_PROG_INSTALL
AC_SUBST([ac_install_sh])
AC_CONFIG_FILES([Makefile])
AC_OUTPUT
]])

AT_DATA([Makefile.in],
[[SHTOOL = @SHTOOL@
# fake these, so that we use shtool wherever possible.
INSTALL_PROGRAM = $(ac_install_sh)
INSTALL_DATA = $(ac_install_sh) -m 644
prefix = @prefix@
ac_install_sh = @ac_install_sh@

install:
	$(INSTALL_PROGRAM) file1 $(prefix)/file1
	$(INSTALL_DATA) file2 $(prefix)/file2

copy-shtool:
	test '$(SHTOOL)' != false
	cp '$(SHTOOL)' build-aux
]])

: >file1
: >file2
chmod +x file1
mkdir build-aux inst
instdir=`pwd`/inst
AT_CHECK_AUTOCONF
cp "$abs_top_srcdir/build-aux/install-sh" build-aux
AT_CHECK_CONFIGURE
AT_SKIP_IF([grep 'SHTOOL = false' Makefile > /dev/null 2>&1])

AT_CHECK_MAKE([copy-shtool])
AT_CHECK([test -s build-aux/shtool])

# AC_PROG_INSTALL should pick up shtool from build-aux, even though
# we're forcing AC_PATH_PROG not to find it on the host system.
rm -f build-aux/install-sh
AT_CHECK_CONFIGURE([--prefix="$instdir" ac_cv_path_SHTOOL=false])
AT_CHECK([grep '^ac_install_sh = .*shtool install -c' Makefile], [], [ignore])
AT_CHECK_MAKE([install])
AT_CHECK([test -f inst/file1 && test -f inst/file2 && test -x inst/file1])

AT_CLEANUP

AT_SETUP([AX_PROG_CC_FOR_BUILD])

cp "$abs_top_srcdir/build-aux/install-sh" \
   "$abs_top_srcdir/build-aux/config.guess" \
   "$abs_top_srcdir/build-aux/config.sub" .

# The Autoconf Macro Archive's AX_PROG_CC_FOR_BUILD invokes AC_PROG_CC
# twice, with a whole bunch of shell variables renamed at the m4 level
# the second time.  Git commit 18c140b50b0619454d4da50d58a318cc257d580a
# broke this usage and the breakage went unnoticed for *eight years*.

cp "$abs_top_srcdir/tests/data/ax_prog_cc_for_build_v18.m4" \
   aclocal.m4

AT_DATA([configure.ac],
[[AC_INIT([foo], [1.0])
AX_PROG_CC_FOR_BUILD
AC_CONFIG_FILES([Makefile])
AC_OUTPUT
]])

AT_DATA([Makefile.in],
[[CC = @CC@
CC_FOR_BUILD = @CC_FOR_BUILD@
]])

AT_CHECK_AUTOCONF
AT_CHECK_CONFIGURE

AT_CHECK([grep '^CC = ..*$' Makefile > /dev/null 2>&1])
AT_CHECK([grep '^CC_FOR_BUILD = ..*$' Makefile > /dev/null 2>&1])

AT_CLEANUP

AT_SETUP([AX_PROG_CXX_FOR_BUILD])

cp "$abs_top_srcdir/build-aux/install-sh" \
   "$abs_top_srcdir/build-aux/config.guess" \
   "$abs_top_srcdir/build-aux/config.sub" .

# The Autoconf Macro Archive's AX_PROG_CXX_FOR_BUILD invokes AC_PROG_CXX
# twice, with a whole bunch of shell variables renamed at the m4 level
# the second time.  This usage was never broken (unlike with AC_PROG_CC)
# but it seems sensible to make sure it doesn't *get* broken.

cat "$abs_top_srcdir/tests/data/ax_prog_cc_for_build_v18.m4" \
    "$abs_top_srcdir/tests/data/ax_prog_cxx_for_build_v3.m4" \
   > aclocal.m4

AT_DATA([configure.ac],
[[AC_INIT([foo], [1.0])
AX_PROG_CXX_FOR_BUILD
AC_CONFIG_FILES([Makefile])
AC_OUTPUT
]])

AT_DATA([Makefile.in],
[[CXX = @CXX@
CXX_FOR_BUILD = @CXX_FOR_BUILD@
]])

AT_CHECK_AUTOCONF
AT_CHECK_CONFIGURE

AT_CHECK([grep '^CXX = ..*$' Makefile > /dev/null 2>&1])
AT_CHECK([grep '^CXX_FOR_BUILD = ..*$' Makefile > /dev/null 2>&1])

AT_CLEANUP


AT_SETUP([gnulib-std-gnu11.m4])

# Gnulib's std-gnu11.m4 (last significant change 2016-03-15) overrides
# most but not all of the internal macros used by AC_PROG_CC and AC_PROG_CXX.
# Commit 131d8c69f31dc6fc8dc93abe1096d52d1fe19fd3 changed the calling
# convention of _AC_C_STD_TRY, causing configure scripts that load
# std-gnu11.m4 to have shell syntax errors.

cp "$abs_top_srcdir/tests/data/gnulib_std_gnu11_2020_08_17.m4" \
   aclocal.m4

AT_DATA([configure.ac],
[[AC_INIT([foo], [1.0])
AC_PROG_CC
AC_PROG_CXX
AC_OUTPUT
]])

AT_CHECK_AUTOCONF
AT_CHECK_CONFIGURE

AT_CLEANUP