diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/sdl2.m4 | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/m4/sdl2.m4 b/m4/sdl2.m4 new file mode 100644 index 0000000..b915f99 --- /dev/null +++ b/m4/sdl2.m4 @@ -0,0 +1,234 @@ +# 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 +# +# Changelog: +# * also look for SDL2.framework under Mac OS X + +# serial 1 + +dnl AM_PATH_SDL2([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_SDL2], +[dnl +dnl Get the cflags and libraries from the sdl2-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) +AC_ARG_ENABLE(sdlframework, [ --disable-sdlframework Do not search for SDL2.framework], + , search_sdl_framework=yes) + +AC_ARG_VAR(SDL2_FRAMEWORK, [Path to SDL2.framework]) + + min_sdl_version=ifelse([$1], ,2.0.0,$1) + + if test "x$sdl_prefix$sdl_exec_prefix" = x ; then + PKG_CHECK_MODULES([SDL], [sdl2 >= $min_sdl_version], + [sdl_pc=yes], + [sdl_pc=no]) + else + sdl_pc=no + if test x$sdl_exec_prefix != x ; then + sdl_config_args="$sdl_config_args --exec-prefix=$sdl_exec_prefix" + if test x${SDL2_CONFIG+set} != xset ; then + SDL2_CONFIG=$sdl_exec_prefix/bin/sdl2-config + fi + fi + if test x$sdl_prefix != x ; then + sdl_config_args="$sdl_config_args --prefix=$sdl_prefix" + if test x${SDL2_CONFIG+set} != xset ; then + SDL2_CONFIG=$sdl_prefix/bin/sdl2-config + fi + fi + fi + + if test "x$sdl_pc" = xyes ; then + no_sdl="" + SDL2_CONFIG="pkg-config sdl2" + else + as_save_PATH="$PATH" + if test "x$prefix" != xNONE && test "$cross_compiling" != yes; then + PATH="$prefix/bin:$prefix/usr/bin:$PATH" + fi + AC_PATH_PROG(SDL2_CONFIG, sdl2-config, no, [$PATH]) + PATH="$as_save_PATH" + no_sdl="" + + if test "$SDL2_CONFIG" = "no" -a "x$search_sdl_framework" = "xyes"; then + AC_MSG_CHECKING(for SDL2.framework) + if test "x$SDL2_FRAMEWORK" != x; then + sdl_framework=$SDL2_FRAMEWORK + else + for d in / ~/ /System/; do + if test -d "$dLibrary/Frameworks/SDL2.framework"; then + sdl_framework="$dLibrary/Frameworks/SDL2.framework" + fi + done + fi + + if test -d $sdl_framework; then + AC_MSG_RESULT($sdl_framework) + sdl_framework_dir=`dirname $sdl_framework` + SDL_CFLAGS="-F$sdl_framework_dir -Wl,-framework,SDL2 -I$sdl_framework/include" + SDL_LIBS="-F$sdl_framework_dir -Wl,-framework,SDL2" + else + no_sdl=yes + fi + fi + + if test "$SDL2_CONFIG" != "no"; then + if test "x$sdl_pc" = "xno"; then + AC_MSG_CHECKING(for SDL - version >= $min_sdl_version) + SDL_CFLAGS=`$SDL2_CONFIG $sdl_config_args --cflags` + SDL_LIBS=`$SDL2_CONFIG $sdl_config_args --libs` + fi + + sdl_major_version=`$SDL2_CONFIG $sdl_config_args --version | \ + sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` + sdl_minor_version=`$SDL2_CONFIG $sdl_config_args --version | \ + sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` + sdl_micro_version=`$SDL2_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 $SDL_LIBS" +dnl +dnl Now check if the installed SDL is sufficiently new. (Also sanity +dnl checks the results of sdl2-config to some extent +dnl + rm -f conf.sdltest + AC_TRY_RUN([ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "SDL.h" + +char* +my_strdup (char *str) +{ + char *new_str; + + if (str) + { + new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char)); + strcpy (new_str, str); + } + else + new_str = NULL; + + return new_str; +} + +int main (int argc, char *argv[]) +{ + int major, minor, micro; + char *tmp_version; + + /* This hangs on some systems (?) + system ("touch conf.sdltest"); + */ + { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); } + + /* HP/UX 9 (%@#!) writes to sscanf strings */ + tmp_version = my_strdup("$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*** 'sdl2-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 sdl2-config is correct, then it is\n", major, minor, micro); + printf("*** best to upgrade to the required version.\n"); + printf("*** If sdl2-config was wrong, set the environment variable SDL2_CONFIG\n"); + printf("*** to point to the correct copy of sdl2-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 + if test "x$sdl_pc" = "xno"; then + if test "x$no_sdl" = "xyes"; then + AC_MSG_RESULT(no) + else + AC_MSG_RESULT(yes) + fi + fi + fi + fi + if test "x$no_sdl" = x ; then + ifelse([$2], , :, [$2]) + else + if test "$SDL2_CONFIG" = "no" ; then + echo "*** The sdl2-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 SDL2_CONFIG environment variable to the" + echo "*** full path to sdl2-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 sdl2-config script: $SDL2_CONFIG" ]) + CFLAGS="$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 +]) |