1 dnl @synopsis AC_CXX_NAMESPACES
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3 dnl If the compiler can prevent names clashes using namespaces, define
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6 dnl @author Luc Maisonobe
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8 AC_DEFUN([AC_CXX_NAMESPACES],
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9 [AC_CACHE_CHECK(whether the compiler implements namespaces,
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10 ac_cv_cxx_namespaces,
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13 AC_TRY_COMPILE([namespace Outer { namespace Inner { int i = 0; }}],
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14 [using namespace Outer::Inner; return i;],
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15 ac_cv_cxx_namespaces=yes, ac_cv_cxx_namespaces=no)
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18 if test "$ac_cv_cxx_namespaces" = yes; then
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19 AC_DEFINE(HAVE_NAMESPACES,1,[define if the compiler implements namespaces])
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25 dnl @author Luc Maisonobe
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27 AC_DEFUN([AC_CXX_REQUIRE_STL],
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28 [AC_CACHE_CHECK(whether the compiler supports Standard Template Library,
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30 [AC_REQUIRE([AC_CXX_NAMESPACES])
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33 AC_TRY_COMPILE([#include <list>
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35 #ifdef HAVE_NAMESPACES
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36 using namespace std;
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37 #endif],[list<int> x; x.push_back(5);
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38 list<int>::iterator iter = x.begin(); if (iter != x.end()) ++iter; return 0;],
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39 ac_cv_cxx_have_stl=yes, ac_cv_cxx_have_stl=no)
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42 if test "x_$ac_cv_cxx_have_stl" != x_yes; then
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43 AC_MSG_ERROR([C++ Standard Template Libary unsupported])
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