cannam@85: dnl @synopsis MN_ADD_CXXFLAGS
cannam@85: dnl
cannam@85: dnl Add the given option to CXXFLAGS, if it doesn't break the compiler
cannam@85: 
cannam@85: AC_DEFUN([MN_ADD_CXXFLAGS],
cannam@85: [AC_MSG_CHECKING([if $CXX accepts $1])
cannam@85: 	AC_LANG_ASSERT([C++])
cannam@85: 	ac_add_cxxflags__old_cxxflags="$CXXFLAGS"
cannam@85: 	CXXFLAGS="$1"
cannam@85: 	AC_TRY_LINK([
cannam@85: 			#include <cstdio>
cannam@85: 			],
cannam@85: 		[puts("Hello, World!"); return 0;],
cannam@85: 		AC_MSG_RESULT([yes])
cannam@85: 			CXXFLAGS="$ac_add_cxxflags__old_cxxflags $1",
cannam@85: 		AC_MSG_RESULT([no])
cannam@85: 			CXXFLAGS="$ac_add_cxxflags__old_cxxflags"
cannam@85: 		)
cannam@85: ])# MN_ADD_CXXFLAGS