2 dnl Copyright (C) 2008 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 # Written by Simon Josefsson
9 AC_DEFUN([gl___FUNC__],
11 AC_CACHE_CHECK([whether __func__ is available], [gl_cv_var___func__],
13 [AC_LANG_PROGRAM([[]], [[const char *str = __func__;]])],
14 [gl_cv_var___func__=yes],
15 [gl_cv_var___func__=no]))
16 if test "$gl_cv_var___func__" != yes; then
17 AC_DEFINE([__func__], ["<unknown function>"],
18 [Define as a replacement for the ISO C99 __func__ variable.])