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- # ===========================================================================
- # https://www.gnu.org/software/autoconf-archive/ax_cxx_have_std.html
- # ===========================================================================
- #
- # SYNOPSIS
- #
- # AX_CXX_HAVE_STD
- #
- # DESCRIPTION
- #
- # If the compiler supports ISO C++ standard library (i.e., can include the
- # files iostream, map, iomanip and cmath), define HAVE_STD.
- #
- # LICENSE
- #
- # Copyright (c) 2008 Todd Veldhuizen
- # Copyright (c) 2008 Luc Maisonobe <luc@spaceroots.org>
- #
- # Copying and distribution of this file, with or without modification, are
- # permitted in any medium without royalty provided the copyright notice
- # and this notice are preserved. This file is offered as-is, without any
- # warranty.
-
- #serial 7
-
- AU_ALIAS([AC_CXX_HAVE_STD], [AX_CXX_HAVE_STD])
- AC_DEFUN([AX_CXX_HAVE_STD],
- [AC_CACHE_CHECK(whether the compiler supports ISO C++ standard library,
- ax_cv_cxx_have_std,
- [AC_REQUIRE([AX_CXX_NAMESPACES])
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILE([#include <iostream>
- #include <map>
- #include <iomanip>
- #include <cmath>
- #ifdef HAVE_NAMESPACES
- using namespace std;
- #endif],[return 0;],
- ax_cv_cxx_have_std=yes, ax_cv_cxx_have_std=no)
- AC_LANG_RESTORE
- ])
- if test "$ax_cv_cxx_have_std" = yes; then
- AC_DEFINE(HAVE_STD,,[define if the compiler supports ISO C++ standard library])
- fi
- ])
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