bind: ensure searching for json headers searches sysroot

Bind can fail configure by detecting headers w/o libs, or
it can fail the host contamination check.  More details
are within the commit log in the contained patch.

(From OE-Core rev: 6fa5671c5cf8e5e88c5ad1e39742d59453e02695)

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-connectivity/bind/bind/bind-ensure-searching-for-json-headers-searches-sysr.patch

@@ -0,0 +1,49 @@
+From 9473d29843579802e96b0293a3e953fed93de82c Mon Sep 17 00:00:00 2001
+From: Paul Gortmaker <paul.gortmaker@windriver.com>
+Date: Tue, 9 Jun 2015 11:22:00 -0400
+Subject: [PATCH] bind: ensure searching for json headers searches sysroot
+
+Bind can fail configure by detecting headers w/o libs[1], or
+it can fail the host contamination check as per below:
+
+ERROR: This autoconf log indicates errors, it looked at host include and/or library paths while determining system capabilities.
+Rerun configure task after fixing this. The path was 'build/tmp/work/core2-64-poky-linux/bind/9.10.2-r1/build'
+ERROR: Function failed: do_qa_configure
+ERROR: Logfile of failure stored in: build/tmp/work/core2-64-poky-linux/bind/9.10.2-r1/temp/log.do_configure.5242
+ERROR: Task 5 (meta/recipes-connectivity/bind/bind_9.10.2.bb, do_configure) failed with exit code '1'
+NOTE: Tasks Summary: Attempted 773 tasks of which 768 didn't need to be rerun and 1 failed.
+No currently running tasks (773 of 781)
+
+Summary: 1 task failed:
+  /meta/recipes-connectivity/bind/bind_9.10.2.bb, do_configure
+
+One way to fix it would be to unconditionally disable json in bind
+configure[2] but here we fix it by using the path to where we would
+put the header if we had json in the sysroot, in case someone wants
+to make use of the combination some day.
+
+[1] https://trac.macports.org/ticket/45305
+[2] https://trac.macports.org/changeset/126406
+
+Upstream-status: Inappropriate [OE Specific]
+Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
+---
+ configure.in | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/configure.in b/configure.in
+index c9ef3a601343..17a1f613e9ac 100644
+--- a/configure.in
++++ b/configure.in
+@@ -2139,7 +2139,7 @@ case "$use_libjson" in
+ 		libjson_libs=""
+ 		;;
+ 	auto|yes)
+-		for d in /usr /usr/local /opt/local
++		for d in "${STAGING_INCDIR}"
+ 		do
+ 			if test -f "${d}/include/json/json.h"
+ 			then
+-- 
+2.4.2
+

meta/recipes-connectivity/bind/bind_9.10.2.bb

@@ -18,6 +18,7 @@ SRC_URI = "ftp://ftp.isc.org/isc/bind9/${PV}/${BPN}-${PV}.tar.gz \
            file://init.d-add-support-for-read-only-rootfs.patch \
            file://bind-confgen-build-unix.o-once.patch \
            file://0001-build-use-pkg-config-to-find-libxml2.patch \
+           file://bind-ensure-searching-for-json-headers-searches-sysr.patch \
            "
 
 SRC_URI[md5sum] = "dca7a9967947bffa98547fca6130fc04"