-OBJS += plugins/dfsound/adsr.o plugins/dfsound/dma.o plugins/dfsound/reverb.o plugins/dfsound/xa.o \
- plugins/dfsound/freeze.o plugins/dfsound/cfg.o plugins/dfsound/registers.o plugins/dfsound/spu.o
+OBJS += plugins/dfsound/dma.o plugins/dfsound/freeze.o \
+ plugins/dfsound/registers.o plugins/dfsound/spu.o
+plugins/dfsound/spu.o: plugins/dfsound/adsr.c plugins/dfsound/reverb.c \
+ plugins/dfsound/xa.c
+plugins/dfsound/%.o: CFLAGS += -Wall