1 dnl Available from the GNU Autoconf Macro Archive at:
2 dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_namespaces.html
4 dnl $Id: ac_cxx_namespaces.m4,v 1.2 2004/09/07 01:19:27 dnelson Exp $
5 dnl @version: 1.3 2004-02-04
6 AC_DEFUN([AC_CXX_NAMESPACES],
7 [AC_CACHE_CHECK(whether the compiler implements namespaces,
11 AC_TRY_COMPILE([namespace Outer { namespace Inner { int i = 0; }}],
12 [using namespace Outer::Inner; return i;],
13 ac_cv_cxx_namespaces=yes, ac_cv_cxx_namespaces=no)
16 if test "$ac_cv_cxx_namespaces" = yes; then
17 AC_DEFINE(HAVE_NAMESPACES,,[define if the compiler implements namespaces])