From 8d3e6cd3f36f1ad2848bcbfb40f00ef7ce94b5f2 Mon Sep 17 00:00:00 2001
From: Roberto De Ioris <info@unbit.it>
Date: Wed, 28 May 2014 06:55:53 +0200
Subject: [PATCH] added fix for older linux systems

---
 core/emperor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/emperor.c b/core/emperor.c
index af33c48c..a63bd57b 100644
--- a/core/emperor.c
+++ b/core/emperor.c
@@ -1741,7 +1741,7 @@ static void emperor_cleanup() {
 
 void emperor_loop() {
 
-#ifdef __linux__
+#if defined(__linux__) && defined(PR_SET_CHILD_SUBREAPER)
         if (uwsgi.emperor_use_fork_server || uwsgi.emperor_subreaper) {
                 if (prctl(PR_SET_CHILD_SUBREAPER, 1, 0, 0, 0)) {
                         uwsgi_error("uwsgi_fork_server()/fork()");