1 dnl Copyright (C) 2003 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
2 dnl CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
4 dnl This library is free software; you can redistribute it and/or
5 dnl modify it under the terms of the GNU Lesser General Public
6 dnl License as published by the Free Software Foundation; either
7 dnl version 2.1 of the License.
9 dnl This library is distributed in the hope that it will be useful,
10 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
11 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 dnl Lesser General Public License for more details.
14 dnl You should have received a copy of the GNU Lesser General Public
15 dnl License along with this library; if not, write to the Free Software
16 dnl Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 dnl See http://www.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
22 dnl @synopsis AC_CXX_NAMESPACES
24 dnl If the compiler can prevent names clashes using namespaces, define
28 dnl @author Luc Maisonobe
30 AC_DEFUN(AC_CXX_NAMESPACES,
31 [AC_CACHE_CHECK(whether the compiler implements namespaces,
35 AC_TRY_COMPILE([namespace Outer { namespace Inner { int i = 0; }}],
36 [using namespace Outer::Inner; return i;],
37 ac_cv_cxx_namespaces=yes, ac_cv_cxx_namespaces=no)
40 if test "$ac_cv_cxx_namespaces" = yes; then
41 AC_DEFINE(HAVE_NAMESPACES,,[define if the compiler implements namespaces])