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Edit File: ax_cxx_const_cast.m4
# =========================================================================== # http://www.gnu.org/software/autoconf-archive/ax_cxx_const_cast.html # =========================================================================== # # SYNOPSIS # # AX_CXX_CONST_CAST # # DESCRIPTION # # If the compiler supports const_cast<>, define HAVE_CONST_CAST. # # 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 6 AU_ALIAS([AC_CXX_CONST_CAST], [AX_CXX_CONST_CAST]) AC_DEFUN([AX_CXX_CONST_CAST], [AC_CACHE_CHECK(whether the compiler supports const_cast<>, ax_cv_cxx_const_cast, [AC_LANG_SAVE AC_LANG_CPLUSPLUS AC_TRY_COMPILE(,[int x = 0;const int& y = x;int& z = const_cast<int&>(y);return z;], ax_cv_cxx_const_cast=yes, ax_cv_cxx_const_cast=no) AC_LANG_RESTORE ]) if test "$ax_cv_cxx_const_cast" = yes; then AC_DEFINE(HAVE_CONST_CAST,,[define if the compiler supports const_cast<>]) fi ])