m4/sys_file_h.m4

   1 # Configure a replacement for <sys/file.h>.
   2 # serial 5
   3
   4 # Copyright (C) 2008-2010 Free Software Foundation, Inc.
   5 # This file is free software; the Free Software Foundation
   6 # gives unlimited permission to copy and/or distribute it,
   7 # with or without modifications, as long as this notice is preserved.
   8
   9 # Written by Richard W.M. Jones.
  10
  11 AC_DEFUN([gl_HEADER_SYS_FILE_H],
  12 [
  13   AC_REQUIRE([gl_HEADER_SYS_FILE_H_DEFAULTS])
  14
  15   dnl <sys/file.h> is always overridden, because of GNULIB_POSIXCHECK.
  16   gl_CHECK_NEXT_HEADERS([sys/file.h])
  17
  18   AC_CHECK_HEADERS_ONCE([sys/file.h])
  19   if test $ac_cv_header_sys_file_h = yes; then
  20     HAVE_SYS_FILE_H=1
  21   else
  22     HAVE_SYS_FILE_H=0
  23   fi
  24   AC_SUBST([HAVE_SYS_FILE_H])
  25
  26   dnl Check for declarations of anything we want to poison if the
  27   dnl corresponding gnulib module is not in use.
  28   gl_WARN_ON_USE_PREPARE([[#include <sys/file.h>
  29     ]], [flock])
  30 ])
  31
  32 AC_DEFUN([gl_HEADER_SYS_FILE_MODULE_INDICATOR],
  33 [
  34   AC_REQUIRE([gl_HEADER_SYS_FILE_H_DEFAULTS])
  35   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  36 ])
  37
  38 AC_DEFUN([gl_HEADER_SYS_FILE_H_DEFAULTS],
  39 [
  40   GNULIB_FLOCK=0;        AC_SUBST([GNULIB_FLOCK])
  41   HAVE_FLOCK=1;          AC_SUBST([HAVE_FLOCK])
  42 ])