diff --git a/GNUmakefile b/GNUmakefile
new file mode 100644
index 0000000..1c9b33e
--- /dev/null
+++ b/GNUmakefile
@@ -0,0 +1,43 @@
+ifdef CROSS
+KROSS=$(CROSS)-
+endif
+CC=$(KROSS)gcc
+CXX=$(KROSS)g++
+RC=$(KROSS)windres
+
+LINK = $(CXX)
+CFLAGS = -O3 -Iinclude -DUNICODE -D_UNICODE -DWIN32_LEAN_AND_MEAN -DWINVER=0x0501 -D_WIN32_WINNT=0x0501
+RCFLAGS = -Iinclude
+LDFLAGS = -s
+
+FILES=build/Keyboard.o build/MainWindow.o build/Window.o \
+      build/PianoControl.o build/midifile.o build/resources.o
+
+all: MusicKeyboard.exe
+
+MusicKeyboard.exe: $(FILES)
+	$(CC) $(CFLAGS) $(LDFLAGS) $(FILES) -o $@
+
+include/MainWindow.hpp: include/Window.hpp include/PianoControl.hpp include/midifile.h
+include/PianoControl.hpp: include/Window.hpp
+include/midifile.h: include/midiinfo.h
+
+build/Keyboard.o: src/Keyboard.cpp include/MainWindow.hpp
+build/MainWindow.o: src/MainWindow.cpp include/MainWindow.hpp
+build/Window.o: src/Window.cpp include/Window.hpp
+build/PianoControl.o: src/PianoControl.cpp include/PianoControl.hpp
+build/midifile.o: src/midifile.c include/midifile.h
+
+build/resources.o: keyboard.rc include/resource.h commctrl6.manifest
+	$(RC) $< -o $@
+
+build/%.o: src/%.cpp
+	$(CXX) $(CFLAGS) -c $< -o $@
+
+build/%.o: src/%.c
+	$(CC) $(CFLAGS) -c $< -o $@
+
+clean:
+	rm -f build/*.o
+	rm -f MusicKeyboard.exe
+