# Configure paths for SMPEG

# Nicolas Vignal 11/19/2000

# stolen from Sam Lantinga

# stolen from Manish Singh

# stolen back from Frank Belew

# stolen from Manish Singh

# Shamelessly stolen from Owen Taylor

dnl AM_PATH_SMPEG2([MINIMUM-VERSION, [ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]]])

dnl Test for SMPEG, and define SMPEG_CFLAGS and SMPEG_LIBS

dnl

AC_DEFUN([AM_PATH_SMPEG2],

[dnl

dnl Get the cflags and libraries from the smpeg2-config script

dnl

AC_ARG_WITH([smpeg-prefix],

AS_HELP_STRING([--with-smpeg-prefix=PFX],

[Prefix where SMPEG is installed (optional)]),

[smpeg_prefix="$withval"], [smpeg_prefix=""])

AC_ARG_WITH([smpeg-exec-prefix],

AS_HELP_STRING([--with-smpeg-exec-prefix=PFX],

[Exec prefix where SMPEG is installed (optional)]),

[smpeg_exec_prefix="$withval"], [smpeg_exec_prefix=""])

AC_ARG_ENABLE([smpegtest],

AS_HELP_STRING([--disable-smpegtest],

[Do not try to compile and run a test SMPEG program]),

[], [enable_smpegtest=yes])

if test x$smpeg_exec_prefix != x ; then

smpeg_args="$smpeg_args --exec-prefix=$smpeg_exec_prefix"

if test x${SMPEG_CONFIG+set} != xset ; then

SMPEG_CONFIG=$smpeg_exec_prefix/bin/smpeg2-config

fi

fi

if test x$smpeg_prefix != x ; then

smpeg_args="$smpeg_args --prefix=$smpeg_prefix"

if test x${SMPEG_CONFIG+set} != xset ; then

SMPEG_CONFIG=$smpeg_prefix/bin/smpeg2-config

fi

fi

AC_PATH_PROG([SMPEG_CONFIG], [smpeg2-config], [no])

min_smpeg_version=ifelse([$1], [], [2.0.0], [$1])

AC_MSG_CHECKING([for SMPEG - version >= $min_smpeg_version])

no_smpeg=""

if test "$SMPEG_CONFIG" = "no" ; then

no_smpeg=yes

else

SMPEG_CFLAGS=`$SMPEG_CONFIG $smpegconf_args --cflags`

SMPEG_LIBS=`$SMPEG_CONFIG $smpegconf_args --libs`

smpeg_major_version=`$SMPEG_CONFIG $smpeg_args --version | \

sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`

smpeg_minor_version=`$SMPEG_CONFIG $smpeg_args --version | \

sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`

smpeg_micro_version=`$SMPEG_CONFIG $smpeg_config_args --version | \

sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`

if test "x$enable_smpegtest" = "xyes" ; then

ac_save_CFLAGS="$CFLAGS"

ac_save_LIBS="$LIBS"

CFLAGS="$CFLAGS $SMPEG_CFLAGS $SDL_CFLAGS"

LIBS="$LIBS $SMPEG_LIBS $SDL_LIBS"

dnl

dnl Now check if the installed SMPEG is sufficiently new. (Also sanity

dnl checks the results of smpeg2-config to some extent

dnl

rm -f conf.smpegtest

AC_RUN_IFELSE([AC_LANG_SOURCE([[

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "smpeg.h"

char*

my_strdup (char *str)

{

char *new_str;

if (str)

{

new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));

strcpy (new_str, str);

}

else

new_str = NULL;

return new_str;

}

int main (int argc, char *argv[])

{

int major, minor, micro;

char *tmp_version;

/* This hangs on some systems (?)

system ("touch conf.smpegtest");

*/

{ FILE *fp = fopen("conf.smpegtest", "a"); if ( fp ) fclose(fp); }

/* HP/UX 9 (%@#!) writes to sscanf strings */

tmp_version = my_strdup("$min_smpeg_version");

if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {

printf("%s, bad version string\n", "$min_smpeg_version");

exit(1);

}

if (($smpeg_major_version > major) ||

(($smpeg_major_version == major) && ($smpeg_minor_version > minor)) ||

(($smpeg_major_version == major) && ($smpeg_minor_version == minor) && ($smpeg_micro_version >= micro)))

{

return 0;

}

else

{

printf("\n*** 'smpeg2-config --version' returned %d.%d.%d, but the minimum version\n", $smpeg_major_version, $smpeg_minor_version, $smpeg_micro_version);

printf("*** of SMPEG required is %d.%d.%d. If smpeg2-config is correct, then it is\n", major, minor, micro);

printf("*** best to upgrade to the required version.\n");

printf("*** If smpeg2-config was wrong, set the environment variable SMPEG_CONFIG\n");

printf("*** to point to the correct copy of smpeg2-config, and remove the file\n");

printf("*** config.cache before re-running configure\n");

return 1;

}

}

]])],[],[no_smpeg=yes], [echo $ac_n "cross compiling; assumed OK... $ac_c"])

CFLAGS="$ac_save_CFLAGS"

LIBS="$ac_save_LIBS"

fi

fi

if test "x$no_smpeg" = x ; then

AC_MSG_RESULT([yes])

ifelse([$2], [], [:], [$2])

else

AC_MSG_RESULT([no])

if test "$SMPEG_CONFIG" = "no" ; then

echo "*** The smpeg2-config script installed by SMPEG could not be found"

echo "*** If SMPEG was installed in PREFIX, make sure PREFIX/bin is in"

echo "*** your path, or set the SMPEG_CONFIG environment variable to the"

echo "*** full path to smpeg2-config."

else

if test -f conf.smpegtest ; then

:

else

echo "*** Could not run SMPEG test program, checking why..."

CFLAGS="$CFLAGS $SMPEG_CFLAGS $SDL_CFLAGS"

LIBS="$LIBS $SMPEG_LIBS $SDL_LIBS"

AC_LINK_IFELSE([AC_LANG_PROGRAM([[

#include <stdio.h>

#include "smpeg.h"

]],

[[ return 0; ]])],

[ echo "*** The test program compiled, but did not run. This usually means"

echo "*** that the run-time linker is not finding SMPEG or finding the wrong"

echo "*** version of SMPEG. If it is not finding SMPEG, 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 SMPEG was incorrectly installed"

echo "*** or that you have moved SMPEG since it was installed. In the latter case, you"

echo "*** may want to edit the smpeg2-config script: $SMPEG_CONFIG" ])

CFLAGS="$ac_save_CFLAGS"

LIBS="$ac_save_LIBS"

fi

fi

SMPEG_CFLAGS=""

SMPEG_LIBS=""

ifelse([$3], [], [:], [$3])

fi

AC_SUBST([SMPEG_CFLAGS])

AC_SUBST([SMPEG_LIBS])

rm -f conf.smpegtest

])