-AO_CFLAGS=-I. -I../stm -I../core -I../drivers -I../math -I..
-STM_CFLAGS=-std=gnu99 -mlittle-endian -mcpu=cortex-m3 -mthumb -ffreestanding -nostdlib $(AO_CFLAGS)
+WARN_FLAGS=-Wall -Wextra -Werror
+
+AO_CFLAGS=-I. -I../stm -I../kernel -I../drivers -I../math -I.. $(PDCLIB_INCLUDES)
+STM_CFLAGS=-std=gnu99 -mlittle-endian -mcpu=cortex-m3 -mthumb \
+ -ffreestanding -nostdlib $(AO_CFLAGS) $(WARN_FLAGS)