diff --git a/Makefile b/Makefile
index aa274f5..91369c0 100644
--- a/Makefile
+++ b/Makefile
@@ -17,11 +17,18 @@ CAPNPC_JAVA_SOURCES=compiler/src/main/cpp/capnpc-java.c++
 all : capnpc-java
 
 clean :
-	rm -f capnpc-java
+	rm -f capnpc-java capnpc-java.exe
 
 capnpc-java : $(CAPNPC_JAVA_SOURCES)
 	$(CXX) $(CAPNPC_JAVA_SOURCES) $(CXX_FLAGS) -o capnpc-java
 
+
+MINGW_LIBS=~/src/capnproto/c++/build-mingw/.libs/libcapnp.a ~/src/capnproto/c++/build-mingw/.libs/libkj.a
+MINGW_CXX=i686-w64-mingw32-g++
+MINGW_FLAGS=-O2 -DNDEBUG -I/usr/local/include -std=c++11 -static -static-libgcc -static-libstdc++
+capnpc-java.exe : $(CAPNPC_JAVA_SOURCES)
+	$(MINGW_CXX) $(MINGW_FLAGS) $(CAPNPC_JAVA_SOURCES) $(MINGW_LIBS) -o capnpc-java.exe
+
 addressbook : capnpc-java
 	PWD=pwd
 	mkdir -p examples/src/main/generated
diff --git a/compiler/src/main/cpp/capnpc-java.c++ b/compiler/src/main/cpp/capnpc-java.c++
index 89c193b..17e37bf 100644
--- a/compiler/src/main/cpp/capnpc-java.c++
+++ b/compiler/src/main/cpp/capnpc-java.c++
@@ -54,6 +54,10 @@
 #define VERSION "(unknown)"
 #endif
 
+#if _WIN32
+#define mkdir(path, mode) mkdir(path)
+#endif
+
 namespace capnp {
 namespace {