From: Roman Bogorodskiy <bogorodskiy@gmail.com>
Date: Wed, 24 Jul 2013 13:02:00 +0000 (+0400)
Subject: Fix link_addr detection
X-Git-Tag: v1.1.1-rc2~34
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e1208297d3d427e8aeb88232de8a5badcc32862;p=thirdparty%2Flibvirt.git

Fix link_addr detection

link_addr detection in configure always reports that
link_addr is missing because it uses link_addr(NULL, NULL) in
AC_LINK_IFELSE check with limited set of headers that doesn't
define NULL.

Fix by replacing 'NULL' with just '0'.
---

diff --git a/configure.ac b/configure.ac
index 27531a1688..cc9942af91 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2401,7 +2401,7 @@ AC_LINK_IFELSE([AC_LANG_PROGRAM(
         #include <net/if_dl.h>
      ]],
      [[
-        link_addr(NULL, NULL)]])],
+        link_addr(0, 0)]])],
      [AC_DEFINE([HAVE_DECL_LINK_ADDR],
                 [1],
                 [whether link_addr is available])])