Index: ext/libicpf/src/log.cpp
===================================================================
diff -u -N -r59323d78de809f467ffe062a5874fc2f86311fa3 -r9a6c943d8b2737422c3652980c8cce2c03679422
--- ext/libicpf/src/log.cpp	(.../log.cpp)	(revision 59323d78de809f467ffe062a5874fc2f86311fa3)
+++ ext/libicpf/src/log.cpp	(.../log.cpp)	(revision 9a6c943d8b2737422c3652980c8cce2c03679422)
@@ -36,6 +36,10 @@
 	#include <unistd.h>
 #endif
 
+#ifdef WIN32
+	#define vsnprintf _vsnprintf;
+#endif
+
 BEGIN_ICPF_NAMESPACE
 
 /// Table of strings representing the log message types