[OE-core] [PATCH 3/6] json-c: Include math_compat.c for NAN/INF values

[Khem Raj]

The backport patch also fixes the warning which was being work arounded
by disabling unused-but-set-variable

Signed-off-by: Khem Raj <raj.khem at gmail.com>
---
 .../0001-json_tokener-requires-INF-and-NAN.patch   | 32 ++++++++++++++++++++++
 meta/recipes-devtools/json-c/json-c_0.12.bb        |  6 ++--
 2 files changed, 35 insertions(+), 3 deletions(-)
 create mode 100644 meta/recipes-devtools/json-c/json-c/0001-json_tokener-requires-INF-and-NAN.patch

diff --git a/meta/recipes-devtools/json-c/json-c/0001-json_tokener-requires-INF-and-NAN.patch b/meta/recipes-devtools/json-c/json-c/0001-json_tokener-requires-INF-and-NAN.patch
new file mode 100644
index 0000000..58ccf7b
--- /dev/null
+++ b/meta/recipes-devtools/json-c/json-c/0001-json_tokener-requires-INF-and-NAN.patch
@@ -0,0 +1,32 @@
+From 9be71700eb580c815688584a64621a38867c3fdd Mon Sep 17 00:00:00 2001
+From: James Myatt <james.myatt at tessella.com>
+Date: Thu, 5 Feb 2015 15:57:14 +0000
+Subject: [PATCH] json_tokener requires INF and NAN
+
+---
+Upstream-Status: Backport
+
+ json_tokener.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+Index: json-c-0.12/json_tokener.c
+===================================================================
+--- json-c-0.12.orig/json_tokener.c
++++ json-c-0.12/json_tokener.c
+@@ -16,6 +16,7 @@
+ #include "config.h"
+ 
+ #include <math.h>
++#include "math_compat.h"
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <stddef.h>
+@@ -353,7 +354,7 @@ struct json_object* json_tokener_parse_e
+     case json_tokener_state_inf: /* aka starts with 'i' */
+       {
+ 	int size;
+-	int size_inf;
++	size_t size_inf;
+ 	int is_negative = 0;
+ 
+ 	printbuf_memappend_fast(tok->pb, &c, 1);
diff --git a/meta/recipes-devtools/json-c/json-c_0.12.bb b/meta/recipes-devtools/json-c/json-c_0.12.bb
index e9c5b31..cfef03d 100644
--- a/meta/recipes-devtools/json-c/json-c_0.12.bb
+++ b/meta/recipes-devtools/json-c/json-c_0.12.bb
@@ -4,7 +4,9 @@ HOMEPAGE = "https://github.com/json-c/json-c/wiki"
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://COPYING;md5=de54b60fbbc35123ba193fea8ee216f2"
 
-SRC_URI = "https://s3.amazonaws.com/json-c_releases/releases/${BP}.tar.gz"
+SRC_URI = "https://s3.amazonaws.com/json-c_releases/releases/${BP}.tar.gz \
+           file://0001-json_tokener-requires-INF-and-NAN.patch \
+          "
 
 SRC_URI[md5sum] = "3ca4bbb881dfc4017e8021b5e0a8c491"
 SRC_URI[sha256sum] = "000c01b2b3f82dcb4261751eb71f1b084404fb7d6a282f06074d3c17078b9f3f"
@@ -17,5 +19,3 @@ do_configure_prepend() {
     # Clean up autoconf cruft that should not be in the tarball
     rm -f ${S}/config.status
 }
-
-CFLAGS += "-Wno-error=unused-but-set-variable"
-- 
2.1.4