| Re: [AD] m4 macro for allegro |
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Just wanted to bump this becuase I think it belongs in the library
package. Anyone have any objections?
Jon Rafkind wrote:
I have finally written an m4 macro for Allegro. I dont believe an m4
macro exists already..
Its use is pretty simple: allegro.m4 needs to be in the
/usr/share/aclocal or /usr/local/share/aclocal directory and then in
configure.in the user calls
AM_PATH_ALLEGRO( MAJOR.MINOR.MICRO )
where major.minor.micro are 4.1.0 or 4.0.3, you get the picture.
The macro will set allegro_LIBS and allegro_CFLAGS which can then be
used in Makefile.am or Makefile.in, but im not sure about Makefile, as
${allegro_LIBS}. e.g:
LIBS=-lm -lsomelibrary ${allegro_LIBS}
I have not thouroughly tested the m4 macro nor know right now how to
add it to the distrobution so it gets copied into the proper directory
upon installation. Hopefully someone else can help with that :).
One final note, I started with the libxml.m4 macro and hacked it up
until it became what it is now.
later--,
jon
# Configure paths for Allegro
# Shamelessly stolen from libxml.a4
# Jon Rafkind 2004-06-06
# Adapted from:
# Configure paths for libXML
# Toshio Kuratomi 2001-04-21
# Adapted from:
# Configure paths for GLIB
# Owen Taylor 97-11-3
dnl AM_PATH_allegro([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
dnl Test for allegro, and define allegro_CFLAGS and allegro_LIBS
dnl
AC_DEFUN(AM_PATH_ALLEGRO,[
AC_ARG_WITH(allegro-prefix,
[ --with-allegro-prefix=PFX Prefix where liballegro is installed (optional)],
ALLEGRO_CONFIG_prefix="$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)
#if 0
||
/* The last released version of liballegro-1.x has an incorrect micro version in
* the header file so neither the includes nor the library will match the
* micro_version to the output of allegro-config
*/
(allegro_micro_version != $ALLEGRO_CONFIG_micro_version)
#endif
)
{
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
])