Index: ext/libicpf/libicpf.vcproj
===================================================================
diff -u -N -r6595bc5b8ba8079e6651ecb5f4c99a7aedc5af9f -r28813ed68056ed023817951c1854bd73cc7d9e27
--- ext/libicpf/libicpf.vcproj	(.../libicpf.vcproj)	(revision 6595bc5b8ba8079e6651ecb5f4c99a7aedc5af9f)
+++ ext/libicpf/libicpf.vcproj	(.../libicpf.vcproj)	(revision 28813ed68056ed023817951c1854bd73cc7d9e27)
@@ -24,7 +24,7 @@
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="1"
 				UsePrecompiledHeader="0"
-				WarningLevel="3"
+				WarningLevel="4"
 				Detect64BitPortabilityProblems="TRUE"
 				DebugInformationFormat="4"/>
 			<Tool
@@ -151,6 +151,9 @@
 				RelativePath=".\src\module.cpp">
 			</File>
 			<File
+				RelativePath=".\src\mutex.cpp">
+			</File>
+			<File
 				RelativePath=".\src\rijndael-alg-fst.c">
 			</File>
 			<File