OPTIMIZATION := ${shell if $(CC) -Os -S -o /dev/null -xc /dev/null >/dev/null 2>&1; \
then echo "-Os"; else echo "-O2" ; fi}
-WARNINGS := -Wall -Wshadow -Wstrict-prototypes
+# add -Wredundant-decls when libsysfs gets cleaned up
+WARNINGS := -Wall -Wshadow -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations
# Some nice architecture specific optimizations
ifeq ($(strip $(TARGET_ARCH)),arm)