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# Configure paths for Allegro
# Shamelessly stolen from libxml.a4
# Jon Rafkind 2004-06-06
# Adapted from:
# Configure paths for libXML
# Toshio Kuratomi 2001-04-21
# Adapted from:
# Configure paths for GLIB
# Owen Taylor 97-11-3
dnl AM_PATH_allegro([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Test for allegro, and define allegro_CFLAGS and allegro_LIBS
dnl
AC_DEFUN([AM_PATH_ALLEGRO],[
AC_ARG_WITH(allegro-prefix,
[ --with-allegro-prefix=PFX Prefix where liballegro is installed (optional)],
ALLEGRO_CONFIG_prefix="$withval", ALLEGRO_CONFIG_prefix="")
AC_ARG_WITH(allegro-exec-prefix,
[ --with-allegro-exec-prefix=PFX Exec prefix where liballegro is installed (optional)],
ALLEGRO_CONFIG_exec_prefix="$withval", ALLEGRO_CONFIG_exec_prefix="")
AC_ARG_ENABLE(allegrotest,
[ --disable-allegrotest Do not try to compile and run a test LIBallegro program],,
enable_allegrotest=yes)
if test x$ALLEGRO_CONFIG_exec_prefix != x ; then
ALLEGRO_CONFIG_args="$ALLEGRO_CONFIG_args --exec-prefix=$ALLEGRO_CONFIG_exec_prefix"
if test x${ALLEGRO_CONFIG+set} != xset ; then
ALLEGRO_CONFIG=$ALLEGRO_CONFIG_exec_prefix/bin/allegro-config
fi
fi
if test x$ALLEGRO_CONFIG_prefix != x ; then
ALLEGRO_CONFIG_args="$ALLEGRO_CONFIG_args --prefix=$ALLEGRO_CONFIG_prefix"
if test x${ALLEGRO_CONFIG+set} != xset ; then
ALLEGRO_CONFIG=$ALLEGRO_CONFIG_prefix/bin/allegro-config
fi
fi
AC_PATH_PROG(ALLEGRO_CONFIG, allegro-config, no)
min_allegro_version=ifelse([$1], ,4.0.0,[$1])
AC_MSG_CHECKING(for Allegro - version >= $min_allegro_version)
no_allegro=""
if test "$ALLEGRO_CONFIG" = "no" ; then
no_allegro=yes
else
allegro_CFLAGS=`$ALLEGRO_CONFIG $ALLEGRO_CONFIG_args --cflags`
allegro_LIBS=`$ALLEGRO_CONFIG $ALLEGRO_CONFIG_args --libs`
ALLEGRO_CONFIG_major_version=`$ALLEGRO_CONFIG $ALLEGRO_CONFIG_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
ALLEGRO_CONFIG_minor_version=`$ALLEGRO_CONFIG $ALLEGRO_CONFIG_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
ALLEGRO_CONFIG_micro_version=`$ALLEGRO_CONFIG $ALLEGRO_CONFIG_args --version | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
if test "x$enable_allegrotest" = "xyes" ; then
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $allegro_CFLAGS"
LIBS="$allegro_LIBS $LIBS"
dnl
dnl Now check if the installed liballegro is sufficiently new.
dnl (Also sanity checks the results of allegro-config to some extent)
dnl
rm -f conf.allegrotest
AC_TRY_RUN([
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <allegro.h>
int
main()
{
int allegro_major_version, allegro_minor_version, allegro_micro_version;
int major, minor, micro;
char *tmp_version;
int tmp_int_version;
system("touch conf.allegrotest");
/* Capture allegro-config output via autoconf/configure variables */
/* HP/UX 9 (%@#!) writes to sscanf strings */
tmp_version = (char *)strdup("$min_allegro_version");
if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
printf("%s, bad version string from allegro-config\n", "$min_allegro_version");
free(tmp_version);
exit(1);
}
free(tmp_version);
/* Capture the version information from the header files */
allegro_major_version = ALLEGRO_VERSION;
allegro_minor_version = ALLEGRO_SUB_VERSION;
allegro_micro_version = ALLEGRO_WIP_VERSION;
/* Compare allegro-config output to the Allegro headers */
if ((allegro_major_version != $ALLEGRO_CONFIG_major_version) ||
(allegro_minor_version != $ALLEGRO_CONFIG_minor_version))
{
printf("*** Allegro header files (version %d.%d.%d) do not match\n",
allegro_major_version, allegro_minor_version, allegro_micro_version);
printf("*** allegro-config (version %d.%d.%d)\n",
$ALLEGRO_CONFIG_major_version, $ALLEGRO_CONFIG_minor_version, $ALLEGRO_CONFIG_micro_version);
return 1;
}
/* Compare the headers to the library to make sure we match */
/* Less than ideal -- doesn't provide us with return value feedback,
* only exits if there's a serious mismatch between header and library.
*/
/* TODO:
* This doesnt work!
*/
/* ALLEGRO_TEST_VERSION; */
/* Test that the library is greater than our minimum version */
if (($ALLEGRO_CONFIG_major_version > major) ||
(($ALLEGRO_CONFIG_major_version == major) && ($ALLEGRO_CONFIG_minor_version > minor)) ||
(($ALLEGRO_CONFIG_major_version == major) && ($ALLEGRO_CONFIG_minor_version == minor) &&
($ALLEGRO_CONFIG_micro_version >= micro)))
{
return 0;
}
else
{
printf("\n*** An old version of Allegro (%d.%d.%d) was found.\n",
allegro_major_version, allegro_minor_version, allegro_micro_version);
printf("*** You need a version of Allegro newer than %d.%d.%d. The latest version of\n",
major, minor, micro);
printf("*** Allegro is always available from http://alleg.sf.net.\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 allegro-config shell script is\n");
printf("*** being found. The easiest way to fix this is to remove the old version\n");
printf("*** of Allegro, but you can also set the ALLEGRO_CONFIG environment to point to the\n");
printf("*** correct copy of allegro-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;
} END_OF_MAIN()
],, no_allegro=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
if test "x$no_allegro" = x ; then
AC_MSG_RESULT(yes (version $ALLEGRO_CONFIG_major_version.$ALLEGRO_CONFIG_minor_version.$ALLEGRO_CONFIG_micro_version))
ifelse([$2], , :, [$2])
else
AC_MSG_RESULT(no)
if test "$ALLEGRO_CONFIG" = "no" ; then
echo "*** The allegro-config script installed by Allegro could not be found"
echo "*** If Allegro was installed in PREFIX, make sure PREFIX/bin is in"
echo "*** your path, or set the ALLEGRO_CONFIG environment variable to the"
echo "*** full path to allegro-config."
else
if test -f conf.allegrotest ; then
:
else
echo "*** Could not run Allegro test program, checking why..."
CFLAGS="$CFLAGS $allegro_CFLAGS"
LIBS="$LIBS $allegro_LIBS"
AC_TRY_LINK([
#include <allegro.h>
#include <stdio.h>
], [ ALLEGRO_TEST_VERSION; return 0;],
[ echo "*** The test program compiled, but did not run. This usually means"
echo "*** that the run-time linker is not finding Allegro or finding the wrong"
echo "*** version of Allegro. If it is not finding Allegro, 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 Allegro was incorrectly installed"
echo "*** or that you have moved Allegro since it was installed. In the latter case, you"
echo "*** may want to edit the allegro-config script: $ALLEGRO_CONFIG" ])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
fi
allegro_CFLAGS=""
allegro_LIBS=""
ifelse([$3], , :, [$3])
fi
AC_SUBST(allegro_CFLAGS)
AC_SUBST(allegro_LIBS)
rm -f conf.allegrotest
])
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