1# sys_types_h.m4 serial 6
2dnl Copyright (C) 2011-2017 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN_ONCE([gl_SYS_TYPES_H],
8[
9  AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS])
10  gl_NEXT_HEADERS([sys/types.h])
11
12  dnl Ensure the type pid_t gets defined.
13  AC_REQUIRE([AC_TYPE_PID_T])
14
15  dnl Ensure the type mode_t gets defined.
16  AC_REQUIRE([AC_TYPE_MODE_T])
17
18  dnl Whether to override the 'off_t' type.
19  AC_REQUIRE([gl_TYPE_OFF_T])
20])
21
22AC_DEFUN([gl_SYS_TYPES_H_DEFAULTS],
23[
24])
25
26# This works around a buggy version in autoconf <= 2.69.
27# See <https://lists.gnu.org/archive/html/autoconf/2016-08/msg00014.html>
28
29m4_version_prereq([2.70], [], [
30
31# This is taken from the following Autoconf patch:
32# http://git.sv.gnu.org/cgit/autoconf.git/commit/?id=e17a30e98
33
34m4_undefine([AC_HEADER_MAJOR])
35AC_DEFUN([AC_HEADER_MAJOR],
36[AC_CHECK_HEADERS_ONCE([sys/types.h])
37AC_CHECK_HEADER([sys/mkdev.h],
38  [AC_DEFINE([MAJOR_IN_MKDEV], [1],
39    [Define to 1 if `major', `minor', and `makedev' are declared in
40     <mkdev.h>.])])
41if test $ac_cv_header_sys_mkdev_h = no; then
42  AC_CHECK_HEADER([sys/sysmacros.h],
43    [AC_DEFINE([MAJOR_IN_SYSMACROS], [1],
44      [Define to 1 if `major', `minor', and `makedev' are declared in
45       <sysmacros.h>.])])
46fi
47])
48
49])
50