$OpenBSD: patch-src_cmd_cc,v 1.1 2017/07/27 09:32:29 espie Exp $

Index: src/cmd.cc
--- src/cmd.cc.orig
+++ src/cmd.cc
@@ -31,6 +31,7 @@
 
 #include <iostream>
 #include <cstring>
+#include <unistd.h>
 
 using std::string;
 using std::stringstream;
