| # serial 1 |
| |
| AC_DEFUN([mfx_PROG_CPPFLAGS], [ |
| AC_MSG_CHECKING([whether the C preprocessor needs special flags]) |
| |
| AC_LANG_CONFTEST([AC_LANG_PROGRAM( |
| [[#include <limits.h> |
| #if (32767 >= 4294967295ul) || (65535u >= 4294967295ul) |
| # include "your C preprocessor is broken 1" |
| #elif (0xffffu == 0xfffffffful) |
| # include "your C preprocessor is broken 2" |
| #elif (32767 >= ULONG_MAX) || (65535u >= ULONG_MAX) |
| # include "your C preprocessor is broken 3" |
| #endif |
| ]], [[ ]] |
| )]) |
| |
| mfx_save_CPPFLAGS=$CPPFLAGS |
| mfx_tmp=ERROR |
| for mfx_arg in "" -no-cpp-precomp |
| do |
| CPPFLAGS="$mfx_arg $mfx_save_CPPFLAGS" |
| _AC_COMPILE_IFELSE([], |
| [mfx_tmp=$mfx_arg |
| break]) |
| done |
| CPPFLAGS=$mfx_save_CPPFLAGS |
| rm -f conftest.$ac_ext conftest.$ac_objext |
| case x$mfx_tmp in |
| x) |
| AC_MSG_RESULT([none needed]) ;; |
| xERROR) |
| AC_MSG_RESULT([ERROR]) |
| AC_MSG_ERROR([your C preprocessor is broken - for details see config.log]) |
| ;; |
| *) |
| AC_MSG_RESULT([$mfx_tmp]) |
| CPPFLAGS="$mfx_tmp $CPPFLAGS" |
| ;; |
| esac |
| ])# mfx_PROG_CPPFLAGS |