--- examples/uselame.cpp.orig	Wed Apr 19 17:27:41 2017
+++ examples/uselame.cpp	Wed Apr 19 17:30:39 2017
@@ -11,6 +11,7 @@
 #include "windows.h"
 #else
 #include <sys/wait.h>
+#include <unistd.h>
 #endif
 
 AudioData *loadWaveFile(char *file);