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