-CFLAGS += -Wall -Wwrite-strings -Wpointer-arith -Wmissing-prototypes \
- -Wstrict-prototypes -Werror -g
+OPTIMISE= -O2
+WERROR= -Werror
+WARNINGS= -Wall -Wwrite-strings -Wpointer-arith -Wmissing-prototypes \
+ -Wstrict-prototypes -Wno-format-zero-length
+DEBUG=-g