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- # ===========================================================================
- # https://www.gnu.org/software/autoconf-archive/ax_c_var_func.html
- # ===========================================================================
- #
- # SYNOPSIS
- #
- # AX_C_VAR_FUNC
- #
- # DESCRIPTION
- #
- # This macro tests if the C complier supports the C9X standard __func__
- # identifier.
- #
- # The new C9X standard for the C language stipulates that the identifier
- # __func__ shall be implicitly declared by the compiler as if, immediately
- # following the opening brace of each function definition, the declaration
- #
- # static const char __func__[] = "function-name";
- #
- # appeared, where function-name is the name of the function where the
- # __func__ identifier is used.
- #
- # LICENSE
- #
- # Copyright (c) 2008 Christopher Currie <christopher@currie.com>
- #
- # This program is free software; you can redistribute it and/or modify it
- # under the terms of the GNU General Public License as published by the
- # Free Software Foundation; either version 2 of the License, or (at your
- # option) any later version.
- #
- # This program is distributed in the hope that it will be useful, but
- # WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
- # Public License for more details.
- #
- # You should have received a copy of the GNU General Public License along
- # with this program. If not, see <https://www.gnu.org/licenses/>.
- #
- # As a special exception, the respective Autoconf Macro's copyright owner
- # gives unlimited permission to copy, distribute and modify the configure
- # scripts that are the output of Autoconf when processing the Macro. You
- # need not follow the terms of the GNU General Public License when using
- # or distributing such scripts, even though portions of the text of the
- # Macro appear in them. The GNU General Public License (GPL) does govern
- # all other use of the material that constitutes the Autoconf Macro.
- #
- # This special exception to the GPL applies to versions of the Autoconf
- # Macro released by the Autoconf Archive. When you make and distribute a
- # modified version of the Autoconf Macro, you may extend this special
- # exception to the GPL to apply to your modified version as well.
-
- #serial 10
-
- AU_ALIAS([AC_C_VAR_FUNC], [AX_C_VAR_FUNC])
- AC_DEFUN([AX_C_VAR_FUNC],
- [AC_REQUIRE([AC_PROG_CC])
- AC_CACHE_CHECK(whether $CC recognizes __func__, ac_cv_c_var_func,
- AC_TRY_COMPILE(,
- [int main() {
- char *s = __func__;
- }], ac_cv_c_var_func=yes,
- ac_cv_c_var_func=no) )
- if test "x$ac_cv_c_var_func" = xyes; then
- AC_DEFINE(HAVE_FUNC,,[Define if the C complier supports __func__])
- fi
- ])dnl
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