PATH_TO_DLL=./dll

out.txt: main.exe
	MONO_PATH=$(PATH_TO_DLL) mono $< > $@

main.exe: main.cs $(PATH_TO_DLL)/lib.dll
	mcs $< -reference:$(lastword $^)

$(PATH_TO_DLL)/lib.dll: $(PATH_TO_DLL)/hello.cs
	mcs $< -t:library -out:$@

clean:
	$(RM) out* *.exe *.dll $(PATH_TO_DLL)/lib.dll