Index: msgcmp.cpp
--- msgcmp.cpp.orig
+++ msgcmp.cpp
@@ -28,6 +28,7 @@
 #include <mimepp/debug.h>
 #include <stdlib.h>
 #include <mimepp/msgcmp.h>
+using std::cerr;
 
 #define kMagicNumber ((DwUint32) 0x22222222L)