--- src/file_reader.cpp.orig 2018-07-11 01:18:06.970719000 +0000
+++ src/file_reader.cpp 2018-07-11 01:18:17.646078000 +0000
@@ -28,6 +28,7 @@
#include <fcntl.h>
#include <lzma.h>
#include <pthread.h>
+#include <unistd.h>
#if defined(ENABLE_ZLIB)
#include <zlib.h>