Index: OpenColorIO-2.1.1/src/OpenColorIO/FileRules.cpp
===================================================================
--- OpenColorIO-2.1.1.orig/src/OpenColorIO/FileRules.cpp
+++ OpenColorIO-2.1.1/src/OpenColorIO/FileRules.cpp
@@ -3,6 +3,7 @@
 
 #include <algorithm>
 #include <cctype>
+#include <cstring>
 #include <map>
 #include <regex>
 #include <sstream>