From 05f4b89d95055cd0f83ceddbdb9604755932218d Mon Sep 17 00:00:00 2001 From: fgerlits Date: Tue, 26 Sep 2006 15:55:30 +0000 Subject: [PATCH] fixing #1772 --- .../gstreamerElements/etc/acinclude.m4 | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/livesupport/src/modules/gstreamerElements/etc/acinclude.m4 b/livesupport/src/modules/gstreamerElements/etc/acinclude.m4 index 57196ac24..a1cdc91d7 100644 --- a/livesupport/src/modules/gstreamerElements/etc/acinclude.m4 +++ b/livesupport/src/modules/gstreamerElements/etc/acinclude.m4 @@ -89,6 +89,31 @@ AC_DEFUN([PKG_CHECK_MODULES], [ ]) +dnl----------------------------------------------------------------------------- +dnl Macro to check for C++ namespaces +dnl for more information on this macro, see +dnl http://autoconf-archive.cryp.to/ac_cxx_namespaces.html +dnl +dnl usage: +dnl If the compiler can prevent names clashes using namespaces, +dnl define HAVE_NAMESPACES. +dnl----------------------------------------------------------------------------- +AC_DEFUN([AC_CXX_NAMESPACES], +[AC_CACHE_CHECK(whether the compiler implements namespaces, +ac_cv_cxx_namespaces, +[AC_LANG_SAVE + AC_LANG_CPLUSPLUS + AC_TRY_COMPILE([namespace Outer { namespace Inner { int i = 0; }}], + [using namespace Outer::Inner; return i;], + ac_cv_cxx_namespaces=yes, ac_cv_cxx_namespaces=no) + AC_LANG_RESTORE +]) +if test "$ac_cv_cxx_namespaces" = yes; then + AC_DEFINE(HAVE_NAMESPACES,,[define if the compiler implements namespaces]) +fi +]) + + dnl----------------------------------------------------------------------------- dnl Macro to check for the boost datetime library. dnl for more information on boost, see http://www.boost.org/