zeromq: fix sparc32 compile

Code is otherwise compiled with sparcv9 optimization and
cannot be run on sparc32 (sparcv8) machine.

Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/zeromq/0003-allow-to-build-sparc-v8-leon.patch

@@ -0,0 +1,30 @@
+From d0b22397ebbef8e250c4cad25b8686018804aa15 Mon Sep 17 00:00:00 2001
+From: Waldemar Brodkorb <wbx@uclibc-ng.org>
+Date: Sat, 4 Jun 2016 09:30:49 +0200
+Subject: [PATCH] allow to build sparc (v8,leon)
+
+Only set sparcv9 optimization for sparc64 systems.
+This allows to run for example application using zeromq
+on sparc32 systems.
+
+Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
+---
+ configure.ac | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/configure.ac b/configure.ac
+index af8293c..cabd734 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -291,7 +291,7 @@ fi
+ 
+ # CPU-specific optimizations
+ case "${host_cpu}" in
+-    *sparc*)
++    *sparc64*)
+         AC_LANG_PUSH([C++])
+         LIBZMQ_CHECK_LANG_FLAG_PREPEND([-mcpu=v9])
+         AC_LANG_POP([C++])
+-- 
+2.7.4 (Apple Git-66)
+