1*75f6d617Schristos# Check for variable-length arrays. 2*75f6d617Schristos 3*75f6d617Schristos#serial 1 4*75f6d617Schristos 5*75f6d617Schristos# From Paul Eggert 6*75f6d617Schristos 7*75f6d617Schristos# Copyright (C) 2001 Free Software Foundation, Inc. 8*75f6d617Schristos 9*75f6d617Schristos# This program is free software; you can redistribute it and/or modify 10*75f6d617Schristos# it under the terms of the GNU General Public License as published by 11*75f6d617Schristos# the Free Software Foundation; either version 2, or (at your option) 12*75f6d617Schristos# any later version. 13*75f6d617Schristos 14*75f6d617Schristos# This program is distributed in the hope that it will be useful, 15*75f6d617Schristos# but WITHOUT ANY WARRANTY; without even the implied warranty of 16*75f6d617Schristos# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17*75f6d617Schristos# GNU General Public License for more details. 18*75f6d617Schristos 19*75f6d617Schristos# You should have received a copy of the GNU General Public License 20*75f6d617Schristos# along with this program; if not, write to the Free Software 21*75f6d617Schristos# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 22*75f6d617Schristos# 02111-1307, USA. 23*75f6d617Schristos 24*75f6d617SchristosAC_DEFUN([AC_C_VARARRAYS], 25*75f6d617Schristos[ 26*75f6d617Schristos AC_CACHE_CHECK([for variable-length arrays], 27*75f6d617Schristos ac_cv_c_vararrays, 28*75f6d617Schristos [AC_TRY_COMPILE( 29*75f6d617Schristos [], 30*75f6d617Schristos [static int x; char a[++x]; a[sizeof a - 1] = 0; return a[0];], 31*75f6d617Schristos ac_cv_c_vararrays=yes, 32*75f6d617Schristos ac_cv_c_vararrays=no)]) 33*75f6d617Schristos if test $ac_cv_c_vararrays = yes; then 34*75f6d617Schristos AC_DEFINE(HAVE_C_VARARRAYS, 1, 35*75f6d617Schristos [Define to 1 if C supports variable-length arrays.]) 36*75f6d617Schristos fi 37*75f6d617Schristos]) 38