| # 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$sdl_exec_prefix != x ; then |
| sdl_args="$sdl_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_args="$sdl_args --prefix=$sdl_prefix" |
| if test x${SDL_CONFIG+set} != xset ; then |
| SDL_CONFIG=$sdl_prefix/bin/sdl-config |
| fi |
| fi |
| |
| if test "x$prefix" != xNONE; then |
| PATH="$prefix/bin:$prefix/usr/bin:$PATH" |
| fi |
| AC_PATH_PROG(SDL_CONFIG, sdl-config, no, [$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 $sdlconf_args --cflags` |
| SDL_LIBS=`$SDL_CONFIG $sdlconf_args --libs` |
| |
| sdl_major_version=`$SDL_CONFIG $sdl_args --version | \ |
| sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` |
| sdl_minor_version=`$SDL_CONFIG $sdl_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 |
| ]) |
