1# sys_types_h.m4 serial 9
2dnl Copyright (C) 2011-2020 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  dnl Use sane struct stat types in OpenVMS 8.2 and later.
10  AC_DEFINE([_USE_STD_STAT], 1, [For standard stat data types on VMS.])
11
12  AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS])
13  gl_NEXT_HEADERS([sys/types.h])
14
15  dnl Ensure the type pid_t gets defined.
16  AC_REQUIRE([AC_TYPE_PID_T])
17
18  dnl Ensure the type mode_t gets defined.
19  AC_REQUIRE([AC_TYPE_MODE_T])
20
21  dnl Whether to override the 'off_t' type.
22  AC_REQUIRE([gl_TYPE_OFF_T])
23
24  dnl Whether to override the 'dev_t' and 'ino_t' types.
25  m4_ifdef([gl_WINDOWS_STAT_INODES], [
26    AC_REQUIRE([gl_WINDOWS_STAT_INODES])
27  ], [
28    WINDOWS_STAT_INODES=0
29  ])
30  AC_SUBST([WINDOWS_STAT_INODES])
31])
32
33AC_DEFUN([gl_SYS_TYPES_H_DEFAULTS],
34[
35])
36
37# This works around a buggy version in autoconf <= 2.69.
38# See <https://lists.gnu.org/r/autoconf/2016-08/msg00014.html>
39
40m4_version_prereq([2.70], [], [
41
42# This is taken from the following Autoconf patch:
43# https://git.savannah.gnu.org/cgit/autoconf.git/commit/?id=e17a30e987d7ee695fb4294a82d987ec3dc9b974
44
45m4_undefine([AC_HEADER_MAJOR])
46AC_DEFUN([AC_HEADER_MAJOR],
47[AC_CHECK_HEADERS_ONCE([sys/types.h])
48AC_CHECK_HEADER([sys/mkdev.h],
49  [AC_DEFINE([MAJOR_IN_MKDEV], [1],
50    [Define to 1 if `major', `minor', and `makedev' are declared in
51     <mkdev.h>.])])
52if test $ac_cv_header_sys_mkdev_h = no; then
53  AC_CHECK_HEADER([sys/sysmacros.h],
54    [AC_DEFINE([MAJOR_IN_SYSMACROS], [1],
55      [Define to 1 if `major', `minor', and `makedev' are declared in
56       <sysmacros.h>.])])
57fi
58])
59
60])
61