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