dhcp-relay: disable backtrace in bundled bind

Disable backtrace in bundled bind to fix build error for qemuarm on
musl.

Fixes:
bind/bind-9.11.32/lib/isc/.libs/libisc.so: undefined reference to `_Unwind_GetIP'

Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-connectivity/dhcp/dhcp-relay_4.4.2.bb

@@ -17,6 +17,7 @@ SRC_URI = "https://ftp.isc.org/isc/dhcp/${PV}/dhcp-${PV}.tar.gz \
            file://dhcrelay.service \
            file://0001-Makefile.am-only-build-dhcrelay.patch \
            file://0002-bind-version-update-to-latest-version.patch \
+           file://0003-bind-Makefile.in-disable-backtrace.patch \
            "
 
 SRC_URI[md5sum] = "2afdaf8498dc1edaf3012efdd589b3e1"

meta-networking/recipes-connectivity/dhcp/files/0003-bind-Makefile.in-disable-backtrace.patch

@@ -0,0 +1,31 @@
+From bc9c5d64ad4829c7830ef70fcaff94470974247c Mon Sep 17 00:00:00 2001
+From: Yi Zhao <yi.zhao@windriver.com>
+Date: Tue, 8 Jun 2021 10:13:57 +0800
+Subject: [PATCH] bind/Makefile.in: disable backtrace
+
+Fixes build error for qemuarm on musl:
+libisc.so: undefined reference to `_Unwind_GetIP'
+
+Upstream-Status: Inappropriate [embedded specific]
+
+Signed-off-by: Yi Zhao <yi.zhao@windriver.com>
+---
+ bind/Makefile.in | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/bind/Makefile.in b/bind/Makefile.in
+index 8fe8883..1058160 100644
+--- a/bind/Makefile.in
++++ b/bind/Makefile.in
+@@ -22,7 +22,7 @@ prefix = @prefix@
+ exec_prefix = @exec_prefix@
+ 
+ bindconfig = --without-openssl --without-libxml2 --without-libjson \
+-	--without-gssapi --disable-threads --without-lmdb \
++	--without-gssapi --disable-threads --without-lmdb --disable-backtrace \
+ 	--includedir=@includedir@ --libdir=@libdir@  --without-python\
+ 	@BINDLT@ @BINDIOMUX@ @BINDCONFIG@ --enable-full-report
+ 
+-- 
+2.17.1
+