1 # sys_types_h.m4 serial 10
2 dnl Copyright (C) 2011-2020 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN_ONCE([gl_SYS_TYPES_H],
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.])
12 AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS])
13 gl_NEXT_HEADERS([sys/types.h])
15 dnl Ensure the type pid_t gets defined.
16 AC_REQUIRE([AC_TYPE_PID_T])
18 dnl Ensure the type mode_t gets defined.
19 AC_REQUIRE([AC_TYPE_MODE_T])
21 dnl Whether to override the 'off_t' type.
22 AC_REQUIRE([gl_TYPE_OFF_T])
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])
30 AC_SUBST([WINDOWS_STAT_INODES])
33 AC_DEFUN([gl_SYS_TYPES_H_DEFAULTS],
37 # This works around a buggy version in autoconf <= 2.69.
38 # See <https://lists.gnu.org/r/autoconf/2016-08/msg00014.html>
40 m4_version_prereq([2.69c], [], [
42 # This is taken from the following Autoconf patch:
43 # https://git.savannah.gnu.org/cgit/autoconf.git/commit/?id=e17a30e987d7ee695fb4294a82d987ec3dc9b974
45 m4_undefine([AC_HEADER_MAJOR])
46 AC_DEFUN([AC_HEADER_MAJOR],
47 [AC_CHECK_HEADERS_ONCE([sys/types.h])
48 AC_CHECK_HEADER([sys/mkdev.h],
49 [AC_DEFINE([MAJOR_IN_MKDEV], [1],
50 [Define to 1 if `major', `minor', and `makedev' are declared in
52 if 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