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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="$1"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <cstdio>
]], [[puts("Hello, World!"); return 0;]])],[AC_MSG_RESULT(yes)
CXXFLAGS="$ac_add_cxxflags__old_cxxflags $1"],[AC_MSG_RESULT(no)
CXXFLAGS="$ac_add_cxxflags__old_cxxflags"
])
])# XIPH_ADD_CXXFLAGS
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