commit b1356c19ba1e527323b18f7b4fcbf687235c662c
parent 343a04ebadbfd04b29cf17ae3ed5b9cf890c2c35
Author: Christian Grothoff <christian@grothoff.org>
Date: Tue, 28 Aug 2012 08:24:44 +0000
improving build scripts
Diffstat:
5 files changed, 491 insertions(+), 71 deletions(-)
diff --git a/bootstrap b/bootstrap
@@ -1,7 +1,3 @@
#!/bin/sh
rm -rf libltdl
-libtoolize --force
-aclocal
-autoheader
-automake --force-missing --add-missing
autoreconf -if
diff --git a/compile b/compile
@@ -1,9 +1,10 @@
#! /bin/sh
-# Wrapper for compilers which do not understand `-c -o'.
+# Wrapper for compilers which do not understand '-c -o'.
-scriptversion=2003-11-09.00
+scriptversion=2012-03-05.13; # UTC
-# Copyright (C) 1999, 2000, 2003 Free Software Foundation, Inc.
+# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2009, 2010, 2012 Free
+# Software Foundation, Inc.
# Written by Tom Tromey <tromey@cygnus.com>.
#
# This program is free software; you can redistribute it and/or modify
@@ -17,8 +18,7 @@ scriptversion=2003-11-09.00
# 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, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
@@ -29,102 +29,308 @@ scriptversion=2003-11-09.00
# bugs to <bug-automake@gnu.org> or send patches to
# <automake-patches@gnu.org>.
+nl='
+'
+
+# We need space, tab and new line, in precisely that order. Quoting is
+# there to prevent tools from complaining about whitespace usage.
+IFS=" "" $nl"
+
+file_conv=
+
+# func_file_conv build_file lazy
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts. If the determined conversion
+# type is listed in (the comma separated) LAZY, no conversion will
+# take place.
+func_file_conv ()
+{
+ file=$1
+ case $file in
+ / | /[!/]*) # absolute file, and not a UNC file
+ if test -z "$file_conv"; then
+ # lazily determine how to convert abs files
+ case `uname -s` in
+ MINGW*)
+ file_conv=mingw
+ ;;
+ CYGWIN*)
+ file_conv=cygwin
+ ;;
+ *)
+ file_conv=wine
+ ;;
+ esac
+ fi
+ case $file_conv/,$2, in
+ *,$file_conv,*)
+ ;;
+ mingw/*)
+ file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+ ;;
+ cygwin/*)
+ file=`cygpath -m "$file" || echo "$file"`
+ ;;
+ wine/*)
+ file=`winepath -w "$file" || echo "$file"`
+ ;;
+ esac
+ ;;
+ esac
+}
+
+# func_cl_dashL linkdir
+# Make cl look for libraries in LINKDIR
+func_cl_dashL ()
+{
+ func_file_conv "$1"
+ if test -z "$lib_path"; then
+ lib_path=$file
+ else
+ lib_path="$lib_path;$file"
+ fi
+ linker_opts="$linker_opts -LIBPATH:$file"
+}
+
+# func_cl_dashl library
+# Do a library search-path lookup for cl
+func_cl_dashl ()
+{
+ lib=$1
+ found=no
+ save_IFS=$IFS
+ IFS=';'
+ for dir in $lib_path $LIB
+ do
+ IFS=$save_IFS
+ if $shared && test -f "$dir/$lib.dll.lib"; then
+ found=yes
+ lib=$dir/$lib.dll.lib
+ break
+ fi
+ if test -f "$dir/$lib.lib"; then
+ found=yes
+ lib=$dir/$lib.lib
+ break
+ fi
+ done
+ IFS=$save_IFS
+
+ if test "$found" != yes; then
+ lib=$lib.lib
+ fi
+}
+
+# func_cl_wrapper cl arg...
+# Adjust compile command to suit cl
+func_cl_wrapper ()
+{
+ # Assume a capable shell
+ lib_path=
+ shared=:
+ linker_opts=
+ for arg
+ do
+ if test -n "$eat"; then
+ eat=
+ else
+ case $1 in
+ -o)
+ # configure might choose to run compile as 'compile cc -o foo foo.c'.
+ eat=1
+ case $2 in
+ *.o | *.[oO][bB][jJ])
+ func_file_conv "$2"
+ set x "$@" -Fo"$file"
+ shift
+ ;;
+ *)
+ func_file_conv "$2"
+ set x "$@" -Fe"$file"
+ shift
+ ;;
+ esac
+ ;;
+ -I)
+ eat=1
+ func_file_conv "$2" mingw
+ set x "$@" -I"$file"
+ shift
+ ;;
+ -I*)
+ func_file_conv "${1#-I}" mingw
+ set x "$@" -I"$file"
+ shift
+ ;;
+ -l)
+ eat=1
+ func_cl_dashl "$2"
+ set x "$@" "$lib"
+ shift
+ ;;
+ -l*)
+ func_cl_dashl "${1#-l}"
+ set x "$@" "$lib"
+ shift
+ ;;
+ -L)
+ eat=1
+ func_cl_dashL "$2"
+ ;;
+ -L*)
+ func_cl_dashL "${1#-L}"
+ ;;
+ -static)
+ shared=false
+ ;;
+ -Wl,*)
+ arg=${1#-Wl,}
+ save_ifs="$IFS"; IFS=','
+ for flag in $arg; do
+ IFS="$save_ifs"
+ linker_opts="$linker_opts $flag"
+ done
+ IFS="$save_ifs"
+ ;;
+ -Xlinker)
+ eat=1
+ linker_opts="$linker_opts $2"
+ ;;
+ -*)
+ set x "$@" "$1"
+ shift
+ ;;
+ *.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
+ func_file_conv "$1"
+ set x "$@" -Tp"$file"
+ shift
+ ;;
+ *.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
+ func_file_conv "$1" mingw
+ set x "$@" "$file"
+ shift
+ ;;
+ *)
+ set x "$@" "$1"
+ shift
+ ;;
+ esac
+ fi
+ shift
+ done
+ if test -n "$linker_opts"; then
+ linker_opts="-link$linker_opts"
+ fi
+ exec "$@" $linker_opts
+ exit 1
+}
+
+eat=
+
case $1 in
'')
- echo "$0: No command. Try \`$0 --help' for more information." 1>&2
+ echo "$0: No command. Try '$0 --help' for more information." 1>&2
exit 1;
;;
-h | --h*)
cat <<\EOF
Usage: compile [--help] [--version] PROGRAM [ARGS]
-Wrapper for compilers which do not understand `-c -o'.
-Remove `-o dest.o' from ARGS, run PROGRAM with the remaining
+Wrapper for compilers which do not understand '-c -o'.
+Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
arguments, and rename the output as expected.
If you are trying to build a whole package this is not the
-right script to run: please start by reading the file `INSTALL'.
+right script to run: please start by reading the file 'INSTALL'.
Report bugs to <bug-automake@gnu.org>.
EOF
- exit 0
+ exit $?
;;
-v | --v*)
echo "compile $scriptversion"
- exit 0
+ exit $?
+ ;;
+ cl | *[/\\]cl | cl.exe | *[/\\]cl.exe )
+ func_cl_wrapper "$@" # Doesn't return...
;;
esac
-
-prog=$1
-shift
-
ofile=
cfile=
-args=
-while test $# -gt 0; do
- case "$1" in
- -o)
- # configure might choose to run compile as `compile cc -o foo foo.c'.
- # So we do something ugly here.
- ofile=$2
- shift
- case "$ofile" in
- *.o | *.obj)
- ;;
- *)
- args="$args -o $ofile"
- ofile=
- ;;
- esac
- ;;
- *.c)
- cfile=$1
- args="$args $1"
- ;;
- *)
- args="$args $1"
- ;;
- esac
+
+for arg
+do
+ if test -n "$eat"; then
+ eat=
+ else
+ case $1 in
+ -o)
+ # configure might choose to run compile as 'compile cc -o foo foo.c'.
+ # So we strip '-o arg' only if arg is an object.
+ eat=1
+ case $2 in
+ *.o | *.obj)
+ ofile=$2
+ ;;
+ *)
+ set x "$@" -o "$2"
+ shift
+ ;;
+ esac
+ ;;
+ *.c)
+ cfile=$1
+ set x "$@" "$1"
+ shift
+ ;;
+ *)
+ set x "$@" "$1"
+ shift
+ ;;
+ esac
+ fi
shift
done
if test -z "$ofile" || test -z "$cfile"; then
- # If no `-o' option was seen then we might have been invoked from a
+ # If no '-o' option was seen then we might have been invoked from a
# pattern rule where we don't need one. That is ok -- this is a
# normal compilation that the losing compiler can handle. If no
- # `.c' file was seen then we are probably linking. That is also
+ # '.c' file was seen then we are probably linking. That is also
# ok.
- exec "$prog" $args
+ exec "$@"
fi
# Name of file we expect compiler to create.
-cofile=`echo $cfile | sed -e 's|^.*/||' -e 's/\.c$/.o/'`
+cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
# Create the lock directory.
-# Note: use `[/.-]' here to ensure that we don't use the same name
+# Note: use '[/\\:.-]' here to ensure that we don't use the same name
# that we are using for the .o file. Also, base the name on the expected
# object file name, since that is what matters with a parallel build.
-lockdir=`echo $cofile | sed -e 's|[/.-]|_|g'`.d
+lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
while true; do
- if mkdir $lockdir > /dev/null 2>&1; then
+ if mkdir "$lockdir" >/dev/null 2>&1; then
break
fi
sleep 1
done
# FIXME: race condition here if user kills between mkdir and trap.
-trap "rmdir $lockdir; exit 1" 1 2 15
+trap "rmdir '$lockdir'; exit 1" 1 2 15
# Run the compile.
-"$prog" $args
-status=$?
+"$@"
+ret=$?
if test -f "$cofile"; then
- mv "$cofile" "$ofile"
+ test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
+elif test -f "${cofile}bj"; then
+ test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
fi
-rmdir $lockdir
-exit $status
+rmdir "$lockdir"
+exit $ret
# Local Variables:
# mode: shell-script
@@ -132,5 +338,6 @@ exit $status
# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
# End:
diff --git a/configure.ac b/configure.ac
@@ -2,6 +2,7 @@
AC_PREREQ(2.61)
AC_INIT([libextractor], [0.7.0], [bug-libextractor@gnu.org])
AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_MACRO_DIR([m4])
AH_TOP([#define _GNU_SOURCE 1])
AC_CANONICAL_TARGET
AC_CANONICAL_HOST
@@ -14,8 +15,6 @@ AC_SUBST(LIB_VERSION_CURRENT)
AC_SUBST(LIB_VERSION_REVISION)
AC_SUBST(LIB_VERSION_AGE)
-LT_CONFIG_LTDL_DIR([libltdl])
-AC_CONFIG_AUX_DIR([libltdl/config])
AM_INIT_AUTOMAKE([silent-rules])
# Checks for programs.
@@ -30,6 +29,8 @@ AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_CANONICAL_HOST
+AC_LIBLTDL_CONVENIENCE
+AC_PROG_LIBTOOL
# save LIBS, libtool does a AC_SEARCH_LIBS(dlopen, dl), but plugins
# need not have -ldl added
LIBSOLD=$LIBS
@@ -530,7 +531,6 @@ AC_CHECK_LIB(gsf-1, gsf_init, AC_DEFINE(HAVE_GSF_INIT,1,[gsf_init supported]))
AC_CHECK_PROG([HAVE_ZZUF],[zzuf], 1, 0)
AM_CONDITIONAL(HAVE_ZZUF, test 0 != $HAVE_ZZUF)
-ffmpeg_enabled=0
AC_MSG_CHECKING([whether to enable the FFmpeg thumbnail extractor])
AC_ARG_ENABLE(ffmpeg,
[AC_HELP_STRING([--enable-ffmpeg],[Enable FFmpeg support])
@@ -543,16 +543,16 @@ AC_ARG_ENABLE(ffmpeg,
ffmpeg_enabled=1
;;
esac],
- [ AC_MSG_RESULT(no)
- ffmpeg_enabled=0])
-AM_CONDITIONAL(HAVE_FFMPEG, test x$ffmpeg_enabled != x0)
+ [ AC_MSG_RESULT(yes)
+ ffmpeg_enabled=1])
if test x$ffmpeg_enabled = x1
then
- AC_CHECK_HEADERS(libavutil/avutil.h ffmpeg/avutil.h)
- AC_CHECK_HEADERS(libavformat/avformat.h ffmpeg/avformat.h)
- AC_CHECK_HEADERS(libavcodec/avcodec.h ffmpeg/avcodec.h)
- AC_CHECK_HEADERS(libswscale/swscale.h ffmpeg/swscale.h)
+ ffmpeg_enabled=0
+ AC_CHECK_LIB(swscale, sws_getContext,
+ ffmpeg_enabled=1)
+ AC_CHECK_HEADERS([libavutil/avutil.h ffmpeg/avutil.h libavformat/avformat.h ffmpeg/avformat.h libavcodec/avcodec.h ffmpeg/avcodec.h libswscale/swscale.h ffmpeg/swscale.h])
fi
+AM_CONDITIONAL(HAVE_FFMPEG, test x$ffmpeg_enabled != x0)
LE_INTLINCL=""
@@ -658,8 +658,6 @@ fi
if test "x$ffmpeg_enabled" = "x0"
then
AC_MSG_NOTICE([NOTICE: FFmpeg thumbnailer plugin disabled])
-else
- AC_MSG_NOTICE([NOTICE: FFmpeg thumbnailer plugin enabled (security untested)])
fi
if test "x$without_gtk" = "xtrue"
diff --git a/doc/version.texi b/doc/version.texi
@@ -1,4 +1,4 @@
-@set UPDATED 26 August 2012
+@set UPDATED 28 August 2012
@set UPDATED-MONTH August 2012
@set EDITION 0.7.0
@set VERSION 0.7.0
diff --git a/m4/gtk-3.0.m4 b/m4/gtk-3.0.m4
@@ -0,0 +1,219 @@
+# Configure paths for GTK+
+# Owen Taylor 1997-2001
+
+dnl AM_PATH_GTK_3_0([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, MODULES]]]])
+dnl Test for GTK+, and define GTK_CFLAGS and GTK_LIBS, if gthread is specified in MODULES,
+dnl pass to pkg-config
+dnl
+AC_DEFUN([AM_PATH_GTK_3_0],
+[dnl
+dnl Get the cflags and libraries from pkg-config
+dnl
+AC_ARG_ENABLE(gtktest, [ --disable-gtktest do not try to compile and run a test GTK+ program],
+ , enable_gtktest=yes)
+
+ pkg_config_args=gtk+-3.0
+ for module in . $4
+ do
+ case "$module" in
+ gthread)
+ pkg_config_args="$pkg_config_args gthread-2.0"
+ ;;
+ esac
+ done
+
+ no_gtk=""
+
+ AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
+
+ if test x$PKG_CONFIG != xno ; then
+ if $PKG_CONFIG --atleast-pkgconfig-version 0.7 ; then
+ :
+ else
+ echo "*** pkg-config too old; version 0.7 or better required."
+ no_gtk=yes
+ PKG_CONFIG=no
+ fi
+ else
+ no_gtk=yes
+ fi
+
+ min_gtk_version=ifelse([$1], ,3.0.0,$1)
+ AC_MSG_CHECKING(for GTK+ - version >= $min_gtk_version)
+
+ if test x$PKG_CONFIG != xno ; then
+ ## don't try to run the test against uninstalled libtool libs
+ if $PKG_CONFIG --uninstalled $pkg_config_args; then
+ echo "Will use uninstalled version of GTK+ found in PKG_CONFIG_PATH"
+ enable_gtktest=no
+ fi
+
+ if $PKG_CONFIG --atleast-version $min_gtk_version $pkg_config_args; then
+ :
+ else
+ no_gtk=yes
+ fi
+ fi
+
+ if test x"$no_gtk" = x ; then
+ GTK_CFLAGS=`$PKG_CONFIG $pkg_config_args --cflags`
+ GTK_LIBS=`$PKG_CONFIG $pkg_config_args --libs`
+ gtk_config_major_version=`$PKG_CONFIG --modversion gtk+-3.0 | \
+ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+ gtk_config_minor_version=`$PKG_CONFIG --modversion gtk+-3.0 | \
+ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+ gtk_config_micro_version=`$PKG_CONFIG --modversion gtk+-3.0 | \
+ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+ if test "x$enable_gtktest" = "xyes" ; then
+ ac_save_CFLAGS="$CFLAGS"
+ ac_save_LIBS="$LIBS"
+ CFLAGS="$CFLAGS $GTK_CFLAGS"
+ LIBS="$GTK_LIBS $LIBS"
+dnl
+dnl Now check if the installed GTK+ is sufficiently new. (Also sanity
+dnl checks the results of pkg-config to some extent)
+dnl
+ rm -f conf.gtktest
+ AC_TRY_RUN([
+#include <gtk/gtk.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main ()
+{
+ int major, minor, micro;
+ char *tmp_version;
+
+ fclose (fopen ("conf.gtktest", "w"));
+
+ /* HP/UX 9 (%@#!) writes to sscanf strings */
+ tmp_version = g_strdup("$min_gtk_version");
+ if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
+ printf("%s, bad version string\n", "$min_gtk_version");
+ exit(1);
+ }
+
+ if ((gtk_major_version != $gtk_config_major_version) ||
+ (gtk_minor_version != $gtk_config_minor_version) ||
+ (gtk_micro_version != $gtk_config_micro_version))
+ {
+ printf("\n*** 'pkg-config --modversion gtk+-3.0' returned %d.%d.%d, but GTK+ (%d.%d.%d)\n",
+ $gtk_config_major_version, $gtk_config_minor_version, $gtk_config_micro_version,
+ gtk_major_version, gtk_minor_version, gtk_micro_version);
+ printf ("*** was found! If pkg-config was correct, then it is best\n");
+ printf ("*** to remove the old version of GTK+. You may also be able to fix the error\n");
+ printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
+ printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
+ printf("*** required on your system.\n");
+ printf("*** If pkg-config was wrong, set the environment variable PKG_CONFIG_PATH\n");
+ printf("*** to point to the correct configuration files\n");
+ }
+ else if ((gtk_major_version != GTK_MAJOR_VERSION) ||
+ (gtk_minor_version != GTK_MINOR_VERSION) ||
+ (gtk_micro_version != GTK_MICRO_VERSION))
+ {
+ printf("*** GTK+ header files (version %d.%d.%d) do not match\n",
+ GTK_MAJOR_VERSION, GTK_MINOR_VERSION, GTK_MICRO_VERSION);
+ printf("*** library (version %d.%d.%d)\n",
+ gtk_major_version, gtk_minor_version, gtk_micro_version);
+ }
+ else
+ {
+ if ((gtk_major_version > major) ||
+ ((gtk_major_version == major) && (gtk_minor_version > minor)) ||
+ ((gtk_major_version == major) && (gtk_minor_version == minor) && (gtk_micro_version >= micro)))
+ {
+ return 0;
+ }
+ else
+ {
+ printf("\n*** An old version of GTK+ (%d.%d.%d) was found.\n",
+ gtk_major_version, gtk_minor_version, gtk_micro_version);
+ printf("*** You need a version of GTK+ newer than %d.%d.%d. The latest version of\n",
+ major, minor, micro);
+ printf("*** GTK+ is always available from ftp://ftp.gtk.org.\n");
+ printf("***\n");
+ printf("*** If you have already installed a sufficiently new version, this error\n");
+ printf("*** probably means that the wrong copy of the pkg-config shell script is\n");
+ printf("*** being found. The easiest way to fix this is to remove the old version\n");
+ printf("*** of GTK+, but you can also set the PKG_CONFIG environment to point to the\n");
+ printf("*** correct copy of pkg-config. (In this case, you will have to\n");
+ printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
+ printf("*** so that the correct libraries are found at run-time))\n");
+ }
+ }
+ return 1;
+}
+],, no_gtk=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
+ CFLAGS="$ac_save_CFLAGS"
+ LIBS="$ac_save_LIBS"
+ fi
+ fi
+ if test "x$no_gtk" = x ; then
+ AC_MSG_RESULT(yes (version $gtk_config_major_version.$gtk_config_minor_version.$gtk_config_micro_version))
+ ifelse([$2], , :, [$2])
+ else
+ AC_MSG_RESULT(no)
+ if test "$PKG_CONFIG" = "no" ; then
+ echo "*** A new enough version of pkg-config was not found."
+ echo "*** See http://pkgconfig.sourceforge.net"
+ else
+ if test -f conf.gtktest ; then
+ :
+ else
+ echo "*** Could not run GTK+ test program, checking why..."
+ ac_save_CFLAGS="$CFLAGS"
+ ac_save_LIBS="$LIBS"
+ CFLAGS="$CFLAGS $GTK_CFLAGS"
+ LIBS="$LIBS $GTK_LIBS"
+ AC_TRY_LINK([
+#include <gtk/gtk.h>
+#include <stdio.h>
+], [ return ((gtk_major_version) || (gtk_minor_version) || (gtk_micro_version)); ],
+ [ echo "*** The test program compiled, but did not run. This usually means"
+ echo "*** that the run-time linker is not finding GTK+ or finding the wrong"
+ echo "*** version of GTK+. If it is not finding GTK+, you'll need to set your"
+ echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
+ echo "*** to the installed location Also, make sure you have run ldconfig if that"
+ echo "*** is required on your system"
+ echo "***"
+ echo "*** If you have an old version installed, it is best to remove it, although"
+ echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH" ],
+ [ echo "*** The test program failed to compile or link. See the file config.log for the"
+ echo "*** exact error that occured. This usually means GTK+ is incorrectly installed."])
+ CFLAGS="$ac_save_CFLAGS"
+ LIBS="$ac_save_LIBS"
+ fi
+ fi
+ GTK_CFLAGS=""
+ GTK_LIBS=""
+ ifelse([$3], , :, [$3])
+ fi
+ AC_SUBST(GTK_CFLAGS)
+ AC_SUBST(GTK_LIBS)
+ rm -f conf.gtktest
+])
+
+dnl GTK_CHECK_BACKEND(BACKEND-NAME [, MINIMUM-VERSION [, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
+dnl Tests for BACKEND-NAME in the GTK targets list
+dnl
+AC_DEFUN([GTK_CHECK_BACKEND],
+[
+ pkg_config_args=ifelse([$1],,gtk+-3.0, gtk+-$1-3.0)
+ min_gtk_version=ifelse([$2],,3.0.0,$2)
+
+ AC_PATH_PROG(PKG_CONFIG, [pkg-config], [AC_MSG_ERROR([No pkg-config found])])
+
+ if $PKG_CONFIG --atleast-version $min_gtk_version $pkg_config_args ; then
+ target_found=yes
+ else
+ target_found=no
+ fi
+
+ if test "x$target_found" = "xno"; then
+ ifelse([$4],,[AC_MSG_ERROR([Backend $backend not found.])],[$4])
+ else
+ ifelse([$3],,[:],[$3])
+ fi
+])
