bind: fix too long error from gen

gen.c uses 512 as the path length which is a little short when build in
deep dir, and cause "too long" error, use PATH_MAX if defined.

(From OE-Core rev: 10e017fd3de3ff1ab0c1b32ac7a9610a04f8ff13)

Signed-off-by: Robert Yang <liezhi.yang@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/0001-lib-dns-gen.c-fix-too-long-error.patch

@@ -0,0 +1,34 @@
+From 5bc3167a8b714ec0c4a3f1c7f3b9411296ec0a23 Mon Sep 17 00:00:00 2001
+From: Robert Yang <liezhi.yang@windriver.com>
+Date: Wed, 16 Sep 2015 20:23:47 -0700
+Subject: [PATCH] lib/dns/gen.c: fix too long error
+
+The 512 is a little short when build in deep dir, and cause "too long"
+error, use PATH_MAX if defined.
+
+Upstream-Status: Pending
+
+Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
+---
+ lib/dns/gen.c |    4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/lib/dns/gen.c b/lib/dns/gen.c
+index 51a0435..3d7214f 100644
+--- a/lib/dns/gen.c
++++ b/lib/dns/gen.c
+@@ -148,7 +148,11 @@ static const char copyright[] =
+ #define TYPECLASSBUF (TYPECLASSLEN + 1)
+ #define TYPECLASSFMT "%" STR(TYPECLASSLEN) "[-0-9a-z]_%d"
+ #define ATTRIBUTESIZE 256
++#ifdef PATH_MAX
++#define DIRNAMESIZE PATH_MAX
++#else
+ #define DIRNAMESIZE 512
++#endif
+ 
+ static struct cc {
+ 	struct cc *next;
+-- 
+1.7.9.5
+

meta/recipes-connectivity/bind/bind_9.10.2-P4.bb

@@ -20,6 +20,7 @@ SRC_URI = "ftp://ftp.isc.org/isc/bind9/${PV}/${BPN}-${PV}.tar.gz \
            file://0001-build-use-pkg-config-to-find-libxml2.patch \
            file://bind-ensure-searching-for-json-headers-searches-sysr.patch \
            file://0001-gen.c-extend-DIRNAMESIZE-from-256-to-512.patch \
+           file://0001-lib-dns-gen.c-fix-too-long-error.patch \
            "
 
 SRC_URI[md5sum] = "8b1f5064837756c938eadc1537dec5c7"