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# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_cxx_have_std.html
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# ===========================================================================
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# If the compiler supports ISO C++ standard library (i.e., can include the
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# files iostream, map, iomanip and cmath), define HAVE_STD.
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# Copyright (c) 2008 Todd Veldhuizen
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# Copyright (c) 2008 Luc Maisonobe <luc@spaceroots.org>
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# Copying and distribution of this file, with or without modification, are
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# permitted in any medium without royalty provided the copyright notice
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# and this notice are preserved. This file is offered as-is, without any
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AU_ALIAS([AC_CXX_HAVE_STD], [AX_CXX_HAVE_STD])
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AC_DEFUN([AX_CXX_HAVE_STD],
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[AC_CACHE_CHECK(whether the compiler supports ISO C++ standard library,
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[AC_REQUIRE([AX_CXX_NAMESPACES])
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AC_TRY_COMPILE([#include <iostream>
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#ifdef HAVE_NAMESPACES
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ax_cv_cxx_have_std=yes, ax_cv_cxx_have_std=no)
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if test "$ax_cv_cxx_have_std" = yes; then
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AC_DEFINE(HAVE_STD,,[define if the compiler supports ISO C++ standard library])