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Diffstat (limited to 'build-aux/m4/stackovf.m4')
| -rw-r--r-- | build-aux/m4/stackovf.m4 | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/build-aux/m4/stackovf.m4 b/build-aux/m4/stackovf.m4 deleted file mode 100644 index 104f737a..00000000 --- a/build-aux/m4/stackovf.m4 +++ /dev/null @@ -1,91 +0,0 @@ -# -*- Autoconf -*- -# stackovf.m4 -- how do we deal with stack overflow? -# -# Copyright (C) 2000, 2003, 2006-2007, 2010, 2013-2014, 2017 Free -# Software Foundation, Inc. -# -# This file is part of GNU M4. -# -# GNU M4 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 3 of the License, or -# (at your option) any later version. -# -# GNU M4 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 <http://www.gnu.org/licenses/>. - -# serial 7 - -# M4_SYS_STACKOVF -# --------------- -AC_DEFUN([M4_SYS_STACKOVF], -[AC_PREREQ([2.60])dnl We use the _ONCE variants -AC_REQUIRE([AC_TYPE_SIGNAL])dnl - -AC_CHECK_HEADERS_ONCE([siginfo.h]) -AC_CHECK_FUNCS_ONCE([sigaction sigaltstack sigstack sigvec]) -AC_CHECK_MEMBERS([stack_t.ss_sp], [], [], -[[#include <signal.h> -#if HAVE_SIGINFO_H -# include <siginfo.h> -#endif -]]) - -# Code from Jim Avera <jima@netcom.com>. -# 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 -AC_CACHE_CHECK([if stack overflow is detectable], [M4_cv_use_stackovf], -[M4_cv_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_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sys/time.h> -#include <sys/resource.h> -#include <signal.h> -]], [[struct rlimit r; 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 -]])], [M4_cv_use_stackovf=yes]) - fi -fi]) - -AM_CONDITIONAL([STACKOVF], [test "$M4_cv_use_stackovf" = yes]) -if test "$M4_cv_use_stackovf" = yes; then - AC_DEFINE([USE_STACKOVF], [1], - [Define to 1 if using stack overflow detection.]) - AC_CHECK_TYPES([rlim_t], [], - [AC_DEFINE([rlim_t], [int], - [Define to int if rlim_t is not defined in sys/resource.h])], - [[#include <sys/resource.h> -]]) - AC_CHECK_TYPES([stack_t], [], - [AC_DEFINE([stack_t], [struct sigaltstack], - [Define to struct sigaltstack if stack_t is not in signal.h])], - [[#include <signal.h> -]]) - AC_CHECK_TYPES([sigcontext], [], [], [[#include <signal.h> -]]) - AC_CHECK_TYPES([siginfo_t], [], [], [[#include <signal.h> -#if HAVE_SIGINFO_H -# include <siginfo.h> -#endif -]]) - AC_CHECK_MEMBERS([struct sigaction.sa_sigaction], [], [], -[[#include <signal.h> -]]) - - AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h> -]], - [[struct sigaltstack x; x.ss_base = 0;]])], - [AC_DEFINE([ss_sp], [ss_base], - [Define to ss_base if stack_t has ss_base instead of ss_sp.])]) -fi -])# M4_SYS_STACKOVF |