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# Configure paths for SVGAlib
# Created by Pierre Sarrazin <http://sarrazip.com/>
# Tiny changes by Julian Albo.
# This file is in the public domain.
# Created from sdl.m4.
# This test must be executed in C mode (AC_LANG_C), not C++ mode.
# Defines SVGALIB_CFLAGS and SVGALIB_LIBS and submits them to AC_SUBST()
dnl AM_PATH_SVGALIB([MINIMUM-VERSION [,ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]]])
dnl Test for SVGAlib, and define SVGALIB_CFLAGS and SVGALIB_LIBS
dnl
AC_DEFUN(AM_PATH_SVGALIB,
[
AC_ARG_WITH(svgalib-prefix,
AC_HELP_STRING([--with-svgalib-prefix=PFX],
[Prefix where SVGAlib is installed [[/usr]]] ),
svgalib_prefix="$withval",
svgalib_prefix="/usr"
)
AC_MSG_RESULT([using $svgalib_prefix as SVGAlib prefix])
AC_ARG_ENABLE(svgalibtest,
AC_HELP_STRING([--disable-svgalibtest],
[Do not try to compile and run a test program] ),
,
enable_svgalibtest=yes
)
dnl Changed this check.
dnl AC_REQUIRE([AC_CANONICAL_TARGET])
AC_REQUIRE([AC_CANONICAL_HOST])
min_svgalib_version=ifelse([$1], ,1.4.0, $1)
AC_MSG_CHECKING([for SVGAlib - version >= $min_svgalib_version])
no_svgalib=""
if test "$svgalib_prefix" = /usr; then
# Avoid the switch -I/usr/include - it might break gcc 3.x
SVGALIB_CFLAGS=
else
SVGALIB_CFLAGS="-I$svgalib_prefix/include"
fi
SVGALIB_LIBS="-L$svgalib_prefix/lib -lvgagl -lvga"
# Get the version number, which appears to be in the lib*.so.* filename:
#
if test -f $svgalib_prefix/lib/libvga.so.*.*.*; then
_f=`echo $svgalib_prefix/lib/libvga.so.*.*.* | \
sed 's/^.*\.so\.//'`
svgalib_major_version=`echo $_f | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
svgalib_minor_version=`echo $_f | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
svgalib_micro_version=`echo $_f | \
sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
unset _f
else
AC_MSG_ERROR([could not find $svgalib_prefix/lib/libvga.so.*.*.*])
fi
if test "_$enable_svgalibtest" = "_yes" ; then
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $SVGALIB_CFLAGS"
LIBS="$LIBS $SVGALIB_LIBS"
dnl
dnl Check if the installed SVGAlib is sufficiently new.
dnl
rm -f conf.svgalibtest
AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "vga.h"
char*
my_strdup (char *str)
{
char *new_str;
if (str)
{
new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
strcpy (new_str, str);
}
else
new_str = NULL;
return new_str;
}
int main (int argc, char *argv[])
{
int major, minor, micro;
char *tmp_version;
/* This hangs on some systems (?)
system ("touch conf.svgalibtest");
*/
{ FILE *fp = fopen("conf.svgalibtest", "a"); if ( fp ) fclose(fp); }
/* HP/UX 9 (%@#!) writes to sscanf strings */
tmp_version = my_strdup("$min_svgalib_version");
if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
printf("%s, bad version string\n", "$min_svgalib_version");
exit(1);
}
if (($svgalib_major_version > major) ||
(($svgalib_major_version == major) && ($svgalib_minor_version > minor)) ||
(($svgalib_major_version == major) && ($svgalib_minor_version == minor) && ($svgalib_micro_version >= micro)))
{
return 0;
}
else
{
printf("\n*** Installed SVGAlib version is %d.%d.%d, but the minimum version\n", $svgalib_major_version, $svgalib_minor_version, $svgalib_micro_version);
printf("*** of SVGAlib required is %d.%d.%d.\n", major, minor, micro);
printf("*** It is best to upgrade to the required version.\n");
printf("*** The web site is http://www.svgalib.org/\n");
printf("*** See also --with-svgalib-prefix\n");
return 1;
}
}
],
,
no_svgalib=yes,
[echo $ac_n "cross compiling; assumed OK... $ac_c"]
)
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
if test "_$no_svgalib" = _ ; then
AC_MSG_RESULT([found $svgalib_major_version.$svgalib_minor_version.$svgalib_micro_version])
ifelse([$2], , :, [$2])
else
AC_MSG_ERROR([SVGAlib >= min_svgalib_version not found])
if test -f conf.svgalibtest ; then
:
else
echo "*** Could not run SVGAlib test program, checking why..."
CFLAGS="$CFLAGS $SVGALIB_CFLAGS"
LIBS="$LIBS $SVGALIB_LIBS"
AC_TRY_LINK([
#include <stdio.h>
#include "vga.h"
int main(int argc, char *argv[])
{ return 0; }
#undef main
#define main K_and_R_C_main
], [ return 0; ],
[ echo "*** The test program compiled, but did not run. This usually means"
echo "*** that the run-time linker is not finding SVGAlib or finding the wrong"
echo "*** version of SVGAlib. If it is not finding SVGAlib, you'll need to set your"
echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
echo "*** to the installed location Also, make sure you have run ldconfig if that"
echo "*** is required on your system"
echo "***"
echo "*** If you have an old version installed, it is best to remove it, although"
echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
],
[ echo "*** The test program failed to compile or link. See the file config.log for the"
echo "*** exact error that occured. This usually means SVGAlib was incorrectly installed"
echo "*** or that you have moved SVGAlib since it was installed."
echo "***"
echo "*** SVGAlib web site: http://www.svgalib.org/"
]
)
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
AC_MSG_ERROR([SVGAlib >= min_svgalib_version not found])
fi
SVGALIB_CFLAGS=""
SVGALIB_LIBS=""
ifelse([$3], , :, [$3])
fi
AC_SUBST(SVGALIB_CFLAGS)
AC_SUBST(SVGALIB_LIBS)
rm -f conf.svgalibtest
])
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