Sync from coreutils.

[gnulib.git] / m4 / free.m4

diff --git a/m4/free.m4 b/m4/free.m4
index 99ebc9a..566734b 100644 (file)
--- a/m4/free.m4
+++ b/m4/free.m4
@@ -1,6 +1,6 @@
 # Check whether free (NULL) is supposed to work.
 
-# Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+# Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -16,14 +16,11 @@
 
 AC_DEFUN([gl_FUNC_FREE],
 [
-  AC_CHECK_HEADERS_ONCE(unistd.h)
   AC_CACHE_CHECK([whether free (NULL) is known to work],
     [gl_cv_func_free],
     [AC_COMPILE_IFELSE(
        [AC_LANG_PROGRAM(
-         [[@%:@if HAVE_UNISTD_H
-             @%:@include <unistd.h>
-           @%:@endif]],
+         [[@%:@include <unistd.h>]],
          [[@%:@if _POSIX_VERSION < 199009L && \
                (defined unix || defined _unix || defined _unix_ \
                 || defined __unix || defined __unix__)