package/jitterentropy-library: fix build without ssp

Fixes:
 - http://autobuild.buildroot.net/results/cba1ae830c7a4d1740098fe67aec59b4dc2f9a03

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Tested-by: Matt Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/jitterentropy-library/0003-Makefile-allow-the-user-to-disable-stack-protector.patch

@@ -0,0 +1,36 @@
+From 37e8a6a7e5875e20a8de07fbfbb69912f1964f7d Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Mon, 28 Oct 2019 09:47:49 +0100
+Subject: [PATCH] Makefile: allow the user to disable stack protector
+
+Allow the user to disable stack-protector by overriding CFLAGS as it is
+not supported by all toolchains.
+
+Fixes:
+ - http://autobuild.buildroot.net/results/cba1ae830c7a4d1740098fe67aec59b4dc2f9a03
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Upstream status: https://github.com/smuellerDD/jitterentropy-library/pull/12]
+---
+ Makefile | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/Makefile b/Makefile
+index 41bc4f7..b0f20e2 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,9 +1,9 @@
+ # Compile Noise Source as user space application
+ 
+ CC ?= gcc
+-CFLAGS +=-Wextra -Wall -pedantic -fPIC -O0
+ #Hardening
+-CFLAGS +=-fstack-protector-all -fwrapv --param ssp-buffer-size=4
++CFLAGS ?=-fstack-protector-all --param ssp-buffer-size=4
++CFLAGS +=-Wextra -Wall -pedantic -fPIC -O0 -fwrapv
+ LDFLAGS +=-Wl,-z,relro,-z,now
+ 
+ # Change as necessary
+-- 
+2.23.0
+