+ include ../port.mk
+ * sim/ucsim/main_in.mk, sim/ucsim/avr.src/Makefile.in,
+ sim/ucsim/gui.src/Makefile.in, sim/ucsim/hc08.src/Makefile.in,
+ sim/ucsim/s52.src/Makefile.in, sim/ucsim/sim.src/Makefile.in,
+ sim/ucsim/xa.src/Makefile.in: ignore header files for dependencies