ignore-value: prefer GCC version back through 2.0

[gnulib.git] / m4 / idcache.m4

diff --git a/m4/idcache.m4 b/m4/idcache.m4
index 6fab7cf..90e71bc 100644 (file)
--- a/m4/idcache.m4
+++ b/m4/idcache.m4
@@ -1,11 +1,11 @@
-# idcache.m4 serial 3
-dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+# idcache.m4 serial 7
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2013 Free Software Foundation,
+dnl 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([gl_IDCACHE],
 [
-  dnl Prerequisites of lib/idcache.c.
-  AC_CHECK_HEADERS_ONCE(unistd.h)
+  :
 ])