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dnl @synopsis AC_CXX_HAVE_STD_NAMESPACEdnldnl If the compiler supports the std namespace, definednl HAVE_STD_NAMESPACE.dnldnl @category Cxxdnl @author Todd Veldhuizendnl @author Luc Maisonobe <luc@spaceroots.org>dnl @version 2004-02-04dnl @license AllPermissive
AC_DEFUN([AC_CXX_HAVE_STD_NAMESPACE],[AC_CACHE_CHECK(whether the compiler supports the std namespace,ac_cv_cxx_have_std_namespace,[AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE([#include <iostream> std::istream& is = std::cin; ],[return 0;], ac_cv_cxx_have_std_namespace=yes, ac_cv_cxx_have_std_namespace=no) AC_LANG_RESTORE])if test "$ac_cv_cxx_have_std_namespace" = yes; then AC_DEFINE(HAVE_STD_NAMESPACE,,[define if the compiler supports the std namespace])fi])
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