package/ndisc6/ndisc6-trace-tcp-upd-uClibc-fix.patch

From 0be2fe3a750b62cafca9794e37f040624d3a59de Mon Sep 17 00:00:00 2001
From: Peter Korsgaard <jacmet@sunsite.dk>
Date: Thu, 26 Apr 2012 23:45:25 +0200
Subject: [PATCH] trace-{tcp,udp}.c: fix build on uClibc

Selection of the BSD variant of struct tcphdr/udphdr on uClibc fails
because of config.h. This is caused by config.h setting _GNU_SOURCE
and the compat handling (uClibc doesn't have inet6_rth_*) including
sys/types.h which in term includes features.h, which figures out
what bsd/gnu/posix variant to use because of:

 /* If _BSD_SOURCE was defined by the user, favor BSD over POSIX.  */
 #if defined _BSD_SOURCE && \
    !(defined _POSIX_SOURCE || defined _POSIX_C_SOURCE || \
      defined _XOPEN_SOURCE || defined _XOPEN_SOURCE_EXTENDED || \
      defined _GNU_SOURCE || defined _SVID_SOURCE)
 # define __FAVOR_BSD    1
 #endif

The current workaround of undefining _GNU_SOURCE after config.h doesn't
work as features.h has already been evaluated by then. Instead, simply
don't include config.h as it isn't needed in these two files.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
---
 src/trace-tcp.c |    5 -----
 src/trace-udp.c |    5 -----
 2 files changed, 10 deletions(-)

diff --git a/src/trace-tcp.c b/src/trace-tcp.c
index 6a7732d..91b64c2 100644
--- a/src/trace-tcp.c
+++ b/src/trace-tcp.c
@@ -17,11 +17,6 @@
  *  along with this program. If not, see <http://www.gnu.org/licenses/>. *
  *************************************************************************/
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#undef _GNU_SOURCE
 #define _BSD_SOURCE 1
 
 #include <string.h>
diff --git a/src/trace-udp.c b/src/trace-udp.c
index 821c24c..1754338 100644
--- a/src/trace-udp.c
+++ b/src/trace-udp.c
@@ -17,11 +17,6 @@
  *  along with this program. If not, see <http://www.gnu.org/licenses/>. *
  *************************************************************************/
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#undef _GNU_SOURCE
 #define _BSD_SOURCE 1
 
 #include <string.h>
-- 
1.7.10