File: getpagesize.m4

package info (click to toggle)
gnu-smalltalk 3.1-6
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 33,300 kB
  • ctags: 13,999
  • sloc: ansic: 88,106; sh: 23,223; asm: 7,889; perl: 4,493; cpp: 3,539; awk: 1,483; yacc: 1,355; xml: 1,272; makefile: 1,192; lex: 843; sed: 258; objc: 124
file content (66 lines) | stat: -rw-r--r-- 2,056 bytes parent folder | download | duplicates (11)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
# 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.
])