Rather than code which doesn't even work properly when cross compiling, lets just use pkg-config instead. Its a little simpler. RP 2014/6/20 Upstream-Status: Pending Index: SDL-1.2.15/sdl.m4 =================================================================== --- SDL-1.2.15.orig/sdl.m4 +++ SDL-1.2.15/sdl.m4 @@ -12,174 +12,8 @@ dnl Test for SDL, and define SDL_CFLAGS 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 $SDL_LIBS" -dnl -dnl Now check if the installed SDL is sufficiently new. (Also sanity -dnl checks the results of sdl-config to some extent -dnl - rm -f conf.sdltest - AC_TRY_RUN([ -#include -#include -#include -#include "SDL.h" - -char* -my_strdup (char *str) -{ - char *new_str; - - if (str) - { - new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char)); - strcpy (new_str, str); - } - else - new_str = NULL; - - return new_str; -} - -int main (int argc, char *argv[]) -{ - int major, minor, micro; - char *tmp_version; - - /* This hangs on some systems (?) - system ("touch conf.sdltest"); - */ - { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); } - - /* HP/UX 9 (%@#!) writes to sscanf strings */ - tmp_version = my_strdup("$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 -#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 + PKG_CHECK_MODULES([SDL], [sdl >= $min_sdl_version]) AC_SUBST(SDL_CFLAGS) AC_SUBST(SDL_LIBS) - rm -f conf.sdltest ])