json-c: Include math_compat.c for NAN/INF values

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

(From OE-Core rev: ebce241d0badff0a12b4c03a428720e0b4a59f32)

(From OE-Core rev: 3f757eb71d69a763a33540b1a590db1926c25408)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 40 insertions, 3 deletions

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 0000000000..d29d9118dc
--- /dev/null
+++ b/meta/recipes-devtools/json-c/json-c/0001-json_tokener-requires-INF-and-NAN.patch
@@ -0,0 +1,37 @@
+From 9be71700eb580c815688584a64621a38867c3fdd Mon Sep 17 00:00:00 2001
+From: James Myatt <james.myatt@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>
+@@ -352,12 +353,10 @@ 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);
+-       size = json_min(tok->st_pos+1, json_null_str_len);
+        size_inf = json_min(tok->st_pos+1, json_inf_str_len);
+        char *infbuf = tok->pb->buf;
+        if (*infbuf == '-')
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 e9c5b31745..cfef03d2e8 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"