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# getpagesize.m4 serial 10
dnl Copyright (C) 2002, 2004-2005, 2007, 2009-2021 Free Software Foundation,
dnl Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_FUNC_GETPAGESIZE],
[
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
AC_REQUIRE([AC_CANONICAL_HOST])
gl_CHECK_FUNC_GETPAGESIZE
if test $gl_cv_func_getpagesize = no; then
HAVE_GETPAGESIZE=0
AC_CHECK_HEADERS([OS.h])
if test $ac_cv_header_OS_h = yes; then
HAVE_OS_H=1
fi
AC_CHECK_HEADERS([sys/param.h])
if test $ac_cv_header_sys_param_h = yes; then
HAVE_SYS_PARAM_H=1
fi
fi
case "$host_os" in
mingw*)
REPLACE_GETPAGESIZE=1
;;
esac
dnl Also check whether it's declared.
dnl mingw has getpagesize() in libgcc.a but doesn't declare it.
AC_CHECK_DECL([getpagesize], , [HAVE_DECL_GETPAGESIZE=0])
])
dnl Tests whether the function getpagesize() exists.
dnl Sets gl_cv_func_getpagesize.
AC_DEFUN([gl_CHECK_FUNC_GETPAGESIZE],
[
dnl We can't use AC_CHECK_FUNC here, because getpagesize() is defined as a
dnl static inline function when compiling for Android 4.4 or older.
AC_CACHE_CHECK([for getpagesize], [gl_cv_func_getpagesize],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#include <unistd.h>]],
[[return getpagesize();]])
],
[gl_cv_func_getpagesize=yes],
[gl_cv_func_getpagesize=no])
])
])
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