--- exrenvmap/main.cpp.orig	2018-08-10 01:35:00 UTC
+++ exrenvmap/main.cpp
@@ -47,6 +47,7 @@
 #include <ImfHeader.h>
 
 #include <iostream>
+#include <cstring>
 #include <exception>
 #include <string>
 #include <string.h>