diff options
Diffstat (limited to 'm4/add_cxxflags.m4')
| -rw-r--r-- | m4/add_cxxflags.m4 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/m4/add_cxxflags.m4 b/m4/add_cxxflags.m4 new file mode 100644 index 00000000..8197dc2d --- /dev/null +++ b/m4/add_cxxflags.m4 @@ -0,0 +1,19 @@ +dnl @synopsis XIPH_ADD_CXXFLAGS +dnl +dnl Add the given option to CXXFLAGS, if it doesn't break the compiler + +AC_DEFUN([XIPH_ADD_CXXFLAGS], +[AC_MSG_CHECKING([if $CXX accepts $1]) + AC_LANG_ASSERT([C++]) + ac_add_cxxflags__old_cxxflags="$CXXFLAGS" + CXXFLAGS="$1" + AC_TRY_LINK([ + #include <cstdio> + ], + [puts("Hello, World!"); return 0;], + AC_MSG_RESULT([yes]) + CXXFLAGS="$ac_add_cxxflags__old_cxxflags $1", + AC_MSG_RESULT([no]) + CXXFLAGS="$ac_add_cxxflags__old_cxxflags" + ) +])# XIPH_ADD_CXXFLAGS |