# sys_types_h.m4 serial 9

dnl Copyright (C) 2011-2018 Free Software Foundation, 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_ONCE([gl_SYS_TYPES_H],

[

  dnl Use sane struct stat types in OpenVMS 8.2 and later.

  AC_DEFINE([_USE_STD_STAT], 1, [For standard stat data types on VMS.])

  AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS])

  gl_NEXT_HEADERS([sys/types.h])

  dnl Ensure the type pid_t gets defined.

  AC_REQUIRE([AC_TYPE_PID_T])

  dnl Ensure the type mode_t gets defined.

  AC_REQUIRE([AC_TYPE_MODE_T])

  dnl Whether to override the 'off_t' type.

  AC_REQUIRE([gl_TYPE_OFF_T])

  dnl Whether to override the 'dev_t' and 'ino_t' types.

  m4_ifdef([gl_WINDOWS_STAT_INODES], [

    AC_REQUIRE([gl_WINDOWS_STAT_INODES])

  ], [

    WINDOWS_STAT_INODES=0

  ])

  AC_SUBST([WINDOWS_STAT_INODES])

])

AC_DEFUN([gl_SYS_TYPES_H_DEFAULTS],

[

])

# This works around a buggy version in autoconf <= 2.69.

# See <https://lists.gnu.org/r/autoconf/2016-08/msg00014.html>

m4_version_prereq([2.70], [], [

# This is taken from the following Autoconf patch:

# https://git.savannah.gnu.org/cgit/autoconf.git/commit/?id=e17a30e987d7ee695fb4294a82d987ec3dc9b974

m4_undefine([AC_HEADER_MAJOR])

AC_DEFUN([AC_HEADER_MAJOR],

[AC_CHECK_HEADERS_ONCE([sys/types.h])

AC_CHECK_HEADER([sys/mkdev.h],

  [AC_DEFINE([MAJOR_IN_MKDEV], [1],

    [Define to 1 if `major', `minor', and `makedev' are declared in

     <mkdev.h>.])])

if test $ac_cv_header_sys_mkdev_h = no; then

  AC_CHECK_HEADER([sys/sysmacros.h],

    [AC_DEFINE([MAJOR_IN_SYSMACROS], [1],

      [Define to 1 if `major', `minor', and `makedev' are declared in

       <sysmacros.h>.])])

fi

])

])