gnulib/import/m4/sys_types_h.m4

   1 # sys_types_h.m4 serial 6
   2 dnl Copyright (C) 2011-2016 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.
   6
   7 AC_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
  22 AC_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
  29 m4_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
  34 m4_undefine([AC_HEADER_MAJOR])
  35 AC_DEFUN([AC_HEADER_MAJOR],
  36 [AC_CHECK_HEADERS_ONCE([sys/types.h])
  37 AC_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>.])])
  41 if 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>.])])
  46 fi
  47 ])
  48
  49 ])