Mercurial > hg > sv-dependency-builds

view src/libsndfile-1.0.27/M4/add_cxxflags.m4 @ 125:cd6cdf86811e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Current libsndfile source
author Chris Cannam <cannam@all-day-breakfast.com>
date Tue, 18 Oct 2016 13:22:47 +0100 (2016-10-18)
parents
children
line wrap: on
line source
dnl @synopsis MN_ADD_CXXFLAGS
dnl
dnl Add the given option to CXXFLAGS, if it doesn't break the compiler

AC_DEFUN([MN_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"
		)
])# MN_ADD_CXXFLAGS