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--- a/sdl.m4 1969-12-31 16:00:00.000000000 -0800
+++ b/sdl.m4 2008-01-24 07:50:20.000000000 -0800
@@ -0,0 +1,183 @@
+# Configure paths for SDL
+# Sam Lantinga 9/21/99
+# stolen from Manish Singh
+# stolen back from Frank Belew
+# stolen from Manish Singh
+# Shamelessly stolen from Owen Taylor
+
+dnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
+dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS
+dnl
+AC_DEFUN([AM_PATH_SDL],
+[dnl
+dnl Get the cflags and libraries from the sdl-config script
+dnl
+AC_ARG_WITH(sdl-prefix,[ --with-sdl-prefix=PFX Prefix where SDL is installed (optional)],
+ sdl_prefix="$withval", sdl_prefix="")
+AC_ARG_WITH(sdl-exec-prefix,[ --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)],
+ sdl_exec_prefix="$withval", sdl_exec_prefix="")
+AC_ARG_ENABLE(sdltest, [ --disable-sdltest Do not try to compile and run a test SDL program],
+ , enable_sdltest=yes)
+
+ if test x$sdl_exec_prefix != x ; then
+ sdl_config_args="$sdl_config_args --exec-prefix=$sdl_exec_prefix"
+ if test x${SDL_CONFIG+set} != xset ; then
+ SDL_CONFIG=$sdl_exec_prefix/bin/sdl-config
+ fi
+ fi
+ if test x$sdl_prefix != x ; then
+ sdl_config_args="$sdl_config_args --prefix=$sdl_prefix"
+ if test x${SDL_CONFIG+set} != xset ; then
+ SDL_CONFIG=$sdl_prefix/bin/sdl-config
+ fi
+ fi
+
+ as_save_PATH="$PATH"
+ if test "x$prefix" != xNONE; then
+ PATH="$prefix/bin:$prefix/usr/bin:$PATH"
+ fi
+ AC_PATH_PROG(SDL_CONFIG, sdl-config, no, [$PATH])
+ PATH="$as_save_PATH"
+ min_sdl_version=ifelse([$1], ,0.11.0,$1)
+ AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
+ no_sdl=""
+ if test "$SDL_CONFIG" = "no" ; then
+ no_sdl=yes
+ else
+ SDL_CFLAGS=`$SDL_CONFIG $sdl_config_args --cflags`
+ SDL_LIBS=`$SDL_CONFIG $sdl_config_args --libs`
+
+ sdl_major_version=`$SDL_CONFIG $sdl_config_args --version | \
+ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+ sdl_minor_version=`$SDL_CONFIG $sdl_config_args --version | \
+ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+ sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \
+ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+ if test "x$enable_sdltest" = "xyes" ; then
+ ac_save_CFLAGS="$CFLAGS"
+ ac_save_CXXFLAGS="$CXXFLAGS"
+ ac_save_LIBS="$LIBS"
+ CFLAGS="$CFLAGS $SDL_CFLAGS"
+ CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
+ LIBS="$LIBS $SDL_LIBS"
+dnl
+dnl Now check if the installed SDL is sufficiently new. (Also sanity
+dnl checks the results of sdl-config to some extent
+dnl
+ rm -f conf.sdltest
+ AC_TRY_RUN([
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "SDL.h"
+
+char*
+my_strdup (char *str)
+{
+ char *new_str;
+
+ if (str)
+ {
+ new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
+ strcpy (new_str, str);
+ }
+ else
+ new_str = NULL;
+
+ return new_str;
+}
+
+int main (int argc, char *argv[])
+{
+ int major, minor, micro;
+ char *tmp_version;
+
+ /* This hangs on some systems (?)
+ system ("touch conf.sdltest");
+ */
+ { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
+
+ /* HP/UX 9 (%@#!) writes to sscanf strings */
+ tmp_version = my_strdup("$min_sdl_version");
+ if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
+ printf("%s, bad version string\n", "$min_sdl_version");
+ exit(1);
+ }
+
+ if (($sdl_major_version > major) ||
+ (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
+ (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
+ {
+ return 0;
+ }
+ else
+ {
+ printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
+ printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);
+ printf("*** best to upgrade to the required version.\n");
+ printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");
+ printf("*** to point to the correct copy of sdl-config, and remove the file\n");
+ printf("*** config.cache before re-running configure\n");
+ return 1;
+ }
+}
+
+],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
+ CFLAGS="$ac_save_CFLAGS"
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ LIBS="$ac_save_LIBS"
+ fi
+ fi
+ if test "x$no_sdl" = x ; then
+ AC_MSG_RESULT(yes)
+ ifelse([$2], , :, [$2])
+ else
+ AC_MSG_RESULT(no)
+ if test "$SDL_CONFIG" = "no" ; then
+ echo "*** The sdl-config script installed by SDL could not be found"
+ echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
+ echo "*** your path, or set the SDL_CONFIG environment variable to the"
+ echo "*** full path to sdl-config."
+ else
+ if test -f conf.sdltest ; then
+ :
+ else
+ echo "*** Could not run SDL test program, checking why..."
+ CFLAGS="$CFLAGS $SDL_CFLAGS"
+ CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
+ LIBS="$LIBS $SDL_LIBS"
+ AC_TRY_LINK([
+#include <stdio.h>
+#include "SDL.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 SDL or finding the wrong"
+ echo "*** version of SDL. If it is not finding SDL, 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 SDL was incorrectly installed"
+ echo "*** or that you have moved SDL since it was installed. In the latter case, you"
+ echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])
+ CFLAGS="$ac_save_CFLAGS"
+ CXXFLAGS="$ac_save_CXXFLAGS"
+ LIBS="$ac_save_LIBS"
+ fi
+ fi
+ SDL_CFLAGS=""
+ SDL_LIBS=""
+ ifelse([$3], , :, [$3])
+ fi
+ AC_SUBST(SDL_CFLAGS)
+ AC_SUBST(SDL_LIBS)
+ rm -f conf.sdltest
+])
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