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--- a/src/utils/pathut.h
+++ b/src/utils/pathut.h
@@ -138,4 +138,7 @@
 // returns true if the file already exists
 extern bool thumbPathForUrl(const string& url, int size, string& path);
 
+// Must be called in main thread before starting other threads
+extern void pathut_init_mt();
+
 #endif /* _PATHUT_H_INCLUDED_ */