dnl 
dnl AC_CXX_HAVE_STL
dnl 
dnl Description
dnl 
dnl  If the compiler supports the Standard Template Library, define HAVE_STL.
dnl 
dnl Version: 1.2 (last modified: 2000-07-19)
dnl Author: Luc Maisonobe
dnl 
dnl from http://www.gnu.org/software/ac-archive/htmldoc/index.html
dnl 
dnl License:
dnl GNU General Public License
dnl [http://www.gnu.org/software/ac-archive/htmldoc/COPYING.html]
dnl with this special exception
dnl [http://www.gnu.org/software/ac-archive/htmldoc/COPYING-Exception.html]. 
dnl 

AC_DEFUN([AC_CXX_HAVE_STL],
[AC_CACHE_CHECK(whether the compiler supports Standard Template Library,
ac_cv_cxx_have_stl,
[AC_REQUIRE([AC_CXX_NAMESPACES])
 AC_LANG_SAVE
 AC_LANG_CPLUSPLUS
 AC_TRY_COMPILE([#include <list>
#include <deque>
#ifdef HAVE_NAMESPACES
using namespace std;
#endif],[list<int> x; x.push_back(5);
list<int>::iterator iter = x.begin(); if (iter != x.end()) ++iter; return 0;],
 ac_cv_cxx_have_stl=yes, ac_cv_cxx_have_stl=no)
 AC_LANG_RESTORE
])
if test "$ac_cv_cxx_have_stl" = yes; then
  AC_DEFINE(HAVE_STL,,[define if the compiler supports Standard Template Library])
fi
])