diff options
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4 new file mode 100644 index 00000000..ed7e4d31 --- /dev/null +++ b/acinclude.m4 @@ -0,0 +1,36 @@ + +dnl +dnl SDL workaround autoconf macros, by Simon Howard. +dnl I release the contents of this file to the public domain. +dnl + +dnl Macro to check if autoconf's compile tests have been broken by +dnl SDL. Tries to build the simplest possible program, and if it +dnl fails, calls the given block. + +AC_DEFUN([AC_CHECK_SDL_BREAKAGE], [ + AC_LINK_IFELSE(AC_LANG_PROGRAM([], []), [], [ + $1 + ]) +]) + +dnl Macro to work around SDL redefining main. The provided block +dnl is run with main #defined to SDL_main via a compiler switch +dnl if autoconf tests are found to be broken. + +AC_DEFUN([AC_SDL_MAIN_WORKAROUND], [ + sdl_workaround_saved_CFLAGS="$CFLAGS" + + AC_CHECK_SDL_BREAKAGE([ + CFLAGS="$CFLAGS -Dmain=SDL_main" + ]) + + AC_CHECK_SDL_BREAKAGE([ + AC_MSG_ERROR([Autoconf checks broken by SDL, and can't figure out how to fix them.]) + ]) + + $1 + + CFLAGS="$sdl_workaround_saved_CFLAGS" +]) + |