careadlinkat: Clarify specification.

[gnulib.git] / m4 / unistd_h.m4

diff --git a/m4/unistd_h.m4 b/m4/unistd_h.m4
index bd34773..c81a113 100644 (file)
--- a/m4/unistd_h.m4
+++ b/m4/unistd_h.m4
@@ -1,5 +1,5 @@
-# unistd_h.m4 serial 52
-dnl Copyright (C) 2006-2010 Free Software Foundation, Inc.
+# unistd_h.m4 serial 53
+dnl Copyright (C) 2006-2011 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.
@@ -14,8 +14,6 @@ AC_DEFUN([gl_UNISTD_H],
   AC_REQUIRE([AC_C_INLINE])
 
   gl_CHECK_NEXT_HEADERS([unistd.h])
-
-  AC_CHECK_HEADERS_ONCE([unistd.h])
   if test $ac_cv_header_unistd_h = yes; then
     HAVE_UNISTD_H=1
   else