# Check for variable-length arrays. #serial 1 # From Paul Eggert # Copyright (C) 2001 Free Software Foundation, Inc. # 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, 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, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA # 02111-1307, USA. AC_DEFUN([AC_C_VARARRAYS], [ AC_CACHE_CHECK([for variable-length arrays], ac_cv_c_vararrays, [AC_TRY_COMPILE( [], [static int x; char a[++x]; a[sizeof a - 1] = 0; return a[0];], ac_cv_c_vararrays=yes, ac_cv_c_vararrays=no)]) if test $ac_cv_c_vararrays = yes; then AC_DEFINE(HAVE_C_VARARRAYS, 1, [Define to 1 if C supports variable-length arrays.]) fi ])