| dnl AX_CFLAGS_OPTIONS(var-name, option) |
| dnl add option to var-name if $CC support it. |
| AC_DEFUN([AX_CFLAGS_OPTION], [ |
| AC_MSG_CHECKING([whether ${CC} $2 is understood]) |
| AC_LANG_SAVE |
| AC_LANG_C |
| SAVE_CFLAGS=$CFLAGS |
| CFLAGS=$2 |
| AC_TRY_COMPILE(,[;],AC_MSG_RESULT([yes]); $1="${$1} $2",AC_MSG_RESULT([no])) |
| CFLAGS=$SAVE_CFLAGS |
| AC_LANG_RESTORE |
| ]) |
| |
| |
| dnl AX_CXXFLAGS_OPTIONS(var-name, option) |
| dnl add option to var-name if $CXX support it. |
| AC_DEFUN([AX_CXXFLAGS_OPTION], [ |
| AC_MSG_CHECKING([whether ${CXX} $2 is understood]) |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| SAVE_CXXFLAGS=$CXXFLAGS |
| CXXFLAGS=$2 |
| AC_TRY_COMPILE(,[;],AC_MSG_RESULT([yes]); $1="${$1} $2",AC_MSG_RESULT([no])) |
| CXXFLAGS=$SAVE_CXXFLAGS |
| AC_LANG_RESTORE |
| ]) |
