--- ecap_adapter_sample-1.0.0/src/adapter_async.cc~	2013-09-17 20:51:39.000000000 +0100
+++ ecap_adapter_sample-1.0.0/src/adapter_async.cc	2016-03-04 16:49:41.916198732 +0000
@@ -12,6 +12,7 @@
 #if HAVE_PTHREAD
 #include <pthread.h>
 #endif
+#include <unistd.h>
 
 /*
  * Warning: This sample code is NOT thread-safe! A production implementation