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-rw-r--r--libsigsegv/m4/getpagesize.m466
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diff --git a/libsigsegv/m4/getpagesize.m4 b/libsigsegv/m4/getpagesize.m4
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-# getpagesize.m4 serial 2 (libsigsegv-2.2)
-dnl Copyright (C) 2002-2003 Bruno Haible <bruno@clisp.org>
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License. As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
-
-# How to determine the memory page size.
-AC_DEFUN([SV_GETPAGESIZE],
-[
- AC_REQUIRE([AC_PROG_CC])
-
- AC_CHECK_HEADERS(unistd.h)
-
- dnl 1) getpagesize().
-
- AC_CACHE_CHECK([for getpagesize], sv_cv_func_getpagesize, [
- AC_LINK_IFELSE([
- AC_LANG_PROGRAM([[
-#if HAVE_UNISTD_H
-#include <sys/types.h>
-#include <unistd.h>
-#endif
-]],
- [[int pgsz = getpagesize();]])],
- [sv_cv_func_getpagesize=yes],
- [sv_cv_func_getpagesize=no])])
- if test $sv_cv_func_getpagesize = yes; then
- AC_DEFINE(HAVE_GETPAGESIZE, 1,
- [Define if getpagesize() is available as a function or a macro.])
- fi
-
- dnl 2) sysconf(_SC_PAGESIZE).
-
- AC_CACHE_CHECK([for sysconf(_SC_PAGESIZE)], sv_cv_func_sysconf_pagesize, [
- AC_LINK_IFELSE([
- AC_LANG_PROGRAM([[
-#if HAVE_UNISTD_H
-#include <sys/types.h>
-#include <unistd.h>
-#endif
-]],
- [[int pgsz = sysconf (_SC_PAGESIZE);]])],
- [sv_cv_func_sysconf_pagesize=yes],
- [sv_cv_func_sysconf_pagesize=no])])
- if test $sv_cv_func_sysconf_pagesize = yes; then
- AC_DEFINE(HAVE_SYSCONF_PAGESIZE, 1,
- [Define if sysconf(_SC_PAGESIZE) is available as a function or a macro.])
- fi
-
- dnl 3) PAGESIZE.
-
- AC_CACHE_CHECK([for PAGESIZE in limits.h], sv_cv_macro_pagesize, [
- AC_LINK_IFELSE([
- AC_LANG_PROGRAM([[#include <limits.h>]],
- [[int pgsz = PAGESIZE;]])],
- [sv_cv_macro_pagesize=yes],
- [sv_cv_macro_pagesize=no])])
- if test $sv_cv_macro_pagesize = yes; then
- AC_DEFINE(HAVE_PAGESIZE, 1,
- [Define if PAGESIZE is available as a macro.])
- fi
-
- dnl 4) On BeOS, you need to include <OS.h> and use B_PAGE_SIZE.
-])