# Configure template for GNU M4. -*-Autoconf-*- # Copyright (C) 1991, 1993, 1994, 2004, 2005 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 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, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA # 02111-1307 USA AC_INIT([GNU M4], [1.4.2a], [bug-m4@gnu.org]) PACKAGE=$PACKAGE_TARNAME; AC_SUBST(PACKAGE) VERSION=$PACKAGE_VERSION; AC_SUBST(VERSION) AC_CONFIG_SRCDIR([src/m4.h]) AC_CONFIG_HEADERS([config.h:config-h.in]) AC_ARG_PROGRAM AC_PROG_AWK AC_PROG_CC AC_PROG_INSTALL AC_PROG_MAKE_SET AC_PROG_RANLIB AC_AIX AC_ISC_POSIX AC_MINIX fp_C_PROTOTYPES AC_C_CONST AC_CHECK_HEADERS([limits.h memory.h siginfo.h string.h unistd.h]) AC_CHECK_HEADERS([signal.h sys/signal.h], [break]) AC_HEADER_STDC AC_TYPE_SIGNAL AC_TYPE_SIZE_T AC_CHECK_FUNCS([mkstemp sigaction sigaltstack sigstack sigvec strerror tmpfile]) AC_FUNC_ALLOCA AC_FUNC_VPRINTF AC_REPLACE_FUNCS([strtol]) AC_MSG_CHECKING([ecvt declaration]) AC_EGREP_HEADER([ecvt], [stdlib.h], [AC_MSG_RESULT(yes) AC_DEFINE([HAVE_EFGCVT], [2], [Define to 1 if you have ecvt(3), fcvt(3) and gcvt(3). Define to 2 if they are declared in stdlib.h]) ], [AC_MSG_RESULT(no); AC_CHECK_FUNCS(ecvt)]) AC_MSG_CHECKING(if stack overflow is detectable) # Code from Jim Avera . # stackovf.c requires: # 1. Either sigaction with SA_ONSTACK, or sigvec with SV_ONSTACK # 2. Either sigaltstack or sigstack # 3. getrlimit, including support for RLIMIT_STACK use_stackovf=no if test "$ac_cv_func_sigaction" = yes || test "$ac_cv_func_sigvec" = yes; then if test "$ac_cv_func_sigaltstack" = yes || test "$ac_cv_func_sigstack" = yes; then AC_TRY_LINK([#include #include #include ], [struct rlimit r; int i; getrlimit (RLIMIT_STACK, &r) #if (!defined(HAVE_SIGACTION) || !defined(SA_ONSTACK)) \ && (!defined(HAVE_SIGVEC) || !defined(SV_ONSTACK)) choke me /* SA_ONSTACK and/or SV_ONSTACK are not defined */ #endif], use_stackovf=yes) fi fi AC_MSG_RESULT($use_stackovf) if test "$use_stackovf" = yes; then AC_DEFINE([USE_STACKOVF], [1], [Define to 1 if using stack overflow detection]) STACKOVF=stackovf.${U}o AC_SUBST(STACKOVF) AC_EGREP_HEADER([rlim_t], [sys/resource.h], [], [AC_DEFINE([rlim_t], [int], [[Define to int if rlim_t is not defined in sys/resource.h]]) ]) AC_EGREP_HEADER([stack_t], [signal.h], [], [AC_DEFINE([stack_t], [struct sigaltstack], [[Define to struct sigaltstack if stack_t is not in sys/signal.h]]) ]) AC_EGREP_HEADER([sigcontext], [signal.h], [AC_DEFINE([HAVE_SIGCONTEXT], [1], [[Define to 1 if signal.h declares struct sigcontext]]) ]) fi AC_MSG_CHECKING([[if changeword is wanted]]) AC_ARG_ENABLE([changeword], [[ --enable-changeword enable -W and changeword() builtin]], [if test "$enableval" = yes; then AC_MSG_RESULT(yes) AC_DEFINE([ENABLE_CHANGEWORD], [1], [[Define to 1 if the changeword(REGEXP) functionality is wanted]]) else AC_MSG_RESULT(no) fi], [AC_MSG_RESULT(no)]) fp_WITH_DMALLOC AC_CONFIG_FILES([stamp-h], [[test -z "$CONFIG_HEADERS" || date > stamp-h]]) AC_CONFIG_FILES([Makefile doc/Makefile lib/Makefile src/Makefile checks/Makefile examples/Makefile ]) AC_OUTPUT