| Mike Dodd | 8cfa702 | 2010-11-17 11:12:26 -0800 | [diff] [blame^] | 1 | dnl AX_CFLAGS_OPTIONS(var-name, option) |
| 2 | dnl add option to var-name if $CC support it. |
| 3 | AC_DEFUN([AX_CFLAGS_OPTION], [ |
| 4 | AC_MSG_CHECKING([whether ${CC} $2 is understood]) |
| 5 | AC_LANG_SAVE |
| 6 | AC_LANG_C |
| 7 | SAVE_CFLAGS=$CFLAGS |
| 8 | CFLAGS=$2 |
| 9 | AC_TRY_COMPILE(,[;],AC_MSG_RESULT([yes]); $1="${$1} $2",AC_MSG_RESULT([no])) |
| 10 | CFLAGS=$SAVE_CFLAGS |
| 11 | AC_LANG_RESTORE |
| 12 | ]) |
| 13 | |
| 14 | |
| 15 | dnl AX_CXXFLAGS_OPTIONS(var-name, option) |
| 16 | dnl add option to var-name if $CXX support it. |
| 17 | AC_DEFUN([AX_CXXFLAGS_OPTION], [ |
| 18 | AC_MSG_CHECKING([whether ${CXX} $2 is understood]) |
| 19 | AC_LANG_SAVE |
| 20 | AC_LANG_CPLUSPLUS |
| 21 | SAVE_CXXFLAGS=$CXXFLAGS |
| 22 | CXXFLAGS=$2 |
| 23 | AC_TRY_COMPILE(,[;],AC_MSG_RESULT([yes]); $1="${$1} $2",AC_MSG_RESULT([no])) |
| 24 | CXXFLAGS=$SAVE_CXXFLAGS |
| 25 | AC_LANG_RESTORE |
| 26 | ]) |