From b0fdc30500ddd271ec263b5b1c2eacf86ff73461 Mon Sep 17 00:00:00 2001
From: "bas@zoetekouw.net" <bas@zoetekouw.net>
Date: Mon, 7 Aug 2017 22:58:43 +0200
Subject: [PATCH] Make sure sbrk() is defined in unistd

---
 src/common_includes.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/common_includes.h b/src/common_includes.h
index a4593d3..fb3148c 100644
--- a/src/common_includes.h
+++ b/src/common_includes.h
@@ -22,6 +22,10 @@
 #ifndef __COMMON_INCLUDES_H
 #define __COMMON_INCLUDES_H
 
+/* make sure unistd.h defines sbrk() */
+#define _DEFAULT_SOURCE 1
+#define _BSD_SOURCE 1
+
 #include <stdio.h>
 #include <string.h>
 #include <strings.h>
-- 
2.14.4