1 # getpagesize.m4 serial 10
2 dnl Copyright (C) 2002, 2004-2005, 2007, 2009-2020 Free Software Foundation,
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
8 AC_DEFUN([gl_FUNC_GETPAGESIZE],
10 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
11 AC_REQUIRE([AC_CANONICAL_HOST])
12 gl_CHECK_FUNC_GETPAGESIZE
13 if test $gl_cv_func_getpagesize = no; then
15 AC_CHECK_HEADERS([OS.h])
16 if test $ac_cv_header_OS_h = yes; then
19 AC_CHECK_HEADERS([sys/param.h])
20 if test $ac_cv_header_sys_param_h = yes; then
29 dnl Also check whether it's declared.
30 dnl mingw has getpagesize() in libgcc.a but doesn't declare it.
31 AC_CHECK_DECL([getpagesize], , [HAVE_DECL_GETPAGESIZE=0])
34 dnl Tests whether the function getpagesize() exists.
35 dnl Sets gl_cv_func_getpagesize.
36 AC_DEFUN([gl_CHECK_FUNC_GETPAGESIZE],
38 dnl We can't use AC_CHECK_FUNC here, because getpagesize() is defined as a
39 dnl static inline function when compiling for Android 4.4 or older.
40 AC_CACHE_CHECK([for getpagesize], [gl_cv_func_getpagesize],
43 [[#include <unistd.h>]],
44 [[return getpagesize();]])
46 [gl_cv_func_getpagesize=yes],
47 [gl_cv_func_getpagesize=no])