diff --git a/jni/windows/Makefile b/jni/windows/Makefile
new file mode 100644
index 0000000..14da521
--- /dev/null
+++ b/jni/windows/Makefile
@@ -0,0 +1,113 @@
+# Copyright 2006 Google Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+
+##
+# Target settings
+##
+GWT_ROOT = ../../
+OBJDIR  := $(GWT_ROOT)build/out/jni/win32/
+OUTDIR  := $(GWT_ROOT)build/jni/win32/
+OUT     := $(OUTDIR)gwt-ll.dll
+STAGING := $(GWT_ROOT)build/staging/gwt-windows-0.0.0/
+
+##
+# Tools
+##
+CXX      := mingw-gcc
+AR       := mingw-ar
+STRIP    := mingw-strip
+LD       := $(CXX)
+
+##
+# List of source, object, and dependency paths plus the path to them
+##
+SRCDIRS := ./:../core/
+VPATH   := .:../core
+SRCS    := gwt-ll.cpp IE6.cpp
+OBJS    := $(addprefix $(OBJDIR),$(SRCS:.cpp=.o))
+DEPS    := $(addprefix $(OBJDIR),$(SRCS:.cpp=.d))
+
+##
+# Include path configuration
+##
+SYSINCS := \
+    $(JAVA_HOME)/include \
+    $(JAVA_HOME)/include/win32
+INCS := $(addprefix -isystem ,$(SYSINCS))
+
+##
+# Libraries and library path
+##
+LIBS    := wininet
+LIBPATH := -L$(OBJDIR)
+LIBS    := $(addprefix -l,$(LIBS))
+
+# for notes on auto-dependency generation, see
+#   http://make.paulandlesley.org/autodep.html
+# -MP obviates the need for sed hackery
+CFLAGS   := -Os -fno-exceptions -fshort-wchar -c -MMD -MP -Wno-system-headers $(CFLAGS)
+LDFLAGS  := -s -Wl,--kill-at $(LDFLAGS)
+
+#-------------------------------------------------------------------------------
+# Rules
+#-------------------------------------------------------------------------------
+
+##
+# default rule
+##
+all: $(OUT)
+
+# install into prebuilt directory
+install: $(OUT)
+	cp $(OUT) prebuilt/
+
+##
+# Include the dependency rules
+##
+-include $(DEPS)
+
+##
+# Compilation rule for cpp files
+##
+$(OBJDIR)%.o : $(SRCDIR)%.cpp
+	@[ -d $(OBJDIR) ] || mkdir -p $(OBJDIR)
+	$(CXX) $(CFLAGS) $(INCS) -o $@ $<
+
+##
+# Compilation rule for .def files to lib*.a files
+##
+$(OBJDIR)lib%.a : $(SRCDIR)%.def
+	@[ -d $(OBJDIR) ] || mkdir -p $(OBJDIR)
+	mingw-dlltool -k -d $< -l $@
+	
+##
+# Actual output file
+##
+$(OUT): $(OBJS) $(OBJDIR)libwininet.a
+	@[ -d $(OUTDIR) ] || mkdir -p $(OUTDIR)
+	$(LD) -shared $(LDFLAGS) $(LIBPATH) -o $@ $^ $(LIBS)
+	$(STRIP) --strip-unneeded $@
+
+##
+# copy to staging area for hosted-mode development
+##
+staging: $(OUT)
+	@[ -d $(STAGING) ] || mkdir -p $(STAGING)
+	cp $(OUT) $(STAGING)
+
+##
+# Clean rule
+##
+clean:
+	@-rm -rf $(OBJDIR) $(OUT)