redis: fix hiredis build so it's less failure-prone and links properly

This patch resets the default OPT flags to -O2 and adds the missing
ranlib command to index the static library.

Signed-off-by: Stephen Arnold <sarnold@vctlabs.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

meta-oe/recipes-extended/redis/redis/hiredis-update-Makefile-to-add-symbols-to-staticlib.patch

@@ -0,0 +1,19 @@
+--- redis-3.0.2/deps/hiredis/Makefile.orig	2016-05-06 19:36:26.179003036 -0700
++++ redis-3.0.2/deps/hiredis/Makefile	2016-05-06 19:40:15.341340736 -0700
+@@ -25,7 +25,7 @@
+ 
+ # Fallback to gcc when $CC is not in $PATH.
+ CC?=$(shell sh -c 'type $(CC) >/dev/null 2>/dev/null && echo $(CC) || echo gcc')
+-OPTIMIZATION?=-O3
++OPTIMIZATION?=-O2
+ WARNINGS=-Wall -W -Wstrict-prototypes -Wwrite-strings
+ DEBUG?= -g -ggdb
+ REAL_CFLAGS=$(OPTIMIZATION) -fPIC $(CFLAGS) $(WARNINGS) $(DEBUG) $(ARCH)
+@@ -68,6 +68,7 @@
+ 
+ $(STLIBNAME): $(OBJ)
+ 	$(STLIB_MAKE_CMD) $(OBJ)
++	$(RANLIB) $@
+ 
+ dynamic: $(DYLIBNAME)
+ static: $(STLIBNAME)

meta-oe/recipes-extended/redis/redis_3.0.2.bb

@@ -12,7 +12,9 @@ SRC_URI = "http://download.redis.io/releases/${BP}.tar.gz \
            file://oe-use-libc-malloc.patch \
            file://redis.conf \
            file://init-redis-server \
+           file://hiredis-update-Makefile-to-add-symbols-to-staticlib.patch \
 "
+
 SRC_URI[md5sum] = "87be8867447f62524b584813e5a7bd14"
 SRC_URI[sha256sum] = "93e422c0d584623601f89b956045be158889ebe594478a2c24e1bf218495633f"