diff -urN sdlmame-0.146/src/emu/emu.mak sdlmame-0.146-patched/src/emu/emu.mak --- sdlmame-0.146/src/emu/emu.mak 2012-05-27 11:21:30.449383001 +1100 +++ sdlmame-0.146-patched/src/emu/emu.mak 2012-05-27 11:24:40.060141002 +1100 @@ -125,6 +125,8 @@ $(EMUOBJ)/profiler.o \ $(OSDOBJ)/osdepend.o \ $(OSDOBJ)/osdnet.o + +$(EMUOBJ)/ioport.o : CCOMFLAGS += -O0 EMUSOUNDOBJS = \ $(EMUOBJ)/sound/filter.o \