dibbler: Fix build with musl

Use _GNU_SOURCE to compile which helps fixing build with musl
add a header reordering patch to again fix another issue with musl
builds

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-connectivity/dibbler/dibbler/0001-port-linux-Re-order-header-includes.patch

@@ -0,0 +1,33 @@
+From cbb33e1548fe526c3e7dead294617bde1f087ae3 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Wed, 24 Aug 2022 16:40:38 -0700
+Subject: [PATCH] port-linux: Re-order header includes
+
+linux/if.h when included before net/if.h casues duplicate definitions
+
+Upstream-Status: Iappropriate [Upstream is Dead] 
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ Port-linux/interface.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Port-linux/interface.c b/Port-linux/interface.c
+index 18777e91..19aefb2b 100644
+--- a/Port-linux/interface.c
++++ b/Port-linux/interface.c
+@@ -25,7 +25,6 @@
+ #include <sys/types.h>
+ #include <sys/socket.h>
+ #include <sys/ioctl.h>
+-#include <linux/if.h>
+ #include <syslog.h>
+ #include <string.h>
+ #include <errno.h>
+@@ -42,6 +41,7 @@
+ #include <stdarg.h>
+ #include <linux/sockios.h>
+ #include <linux/if_ether.h>
++#include <linux/if.h>
+ 
+ int interface_auto_up = 0;
+ int interface_do_message = 0;

meta-networking/recipes-connectivity/dibbler/dibbler_git.bb

@@ -9,6 +9,7 @@ SRCREV = "a7c6cf58a88a510cb00841351e75030ce78d36bf"
 
 SRC_URI = "git://github.com/tomaszmrugalski/dibbler;branch=master;protocol=https \
            file://dibbler_fix_getSize_crash.patch \
+           file://0001-port-linux-Re-order-header-includes.patch \
            "
 PV = "1.0.1+1.0.2RC1+git${SRCREV}"
 
@@ -29,6 +30,7 @@ inherit autotools
 
 DEPENDS += "flex-native"
 
+CFLAGS += "-D_GNU_SOURCE"
 LDFLAGS += "-pthread"
 
 PACKAGES =+ "${PN}-requestor ${PN}-client ${PN}-relay ${PN}-server"