Index: src/fast_endianless.hpp
--- src/fast_endianless.hpp.orig
+++ src/fast_endianless.hpp
@@ -1,5 +1,7 @@
 #pragma once
 
+// For int32_t
+#include <sys/types.h>
 #include <arpa/inet.h>
 
 // Linux standard functions for endian conversions are ugly because there are no checks about arguments length