RIOT/cpu/stm32f4/Makefile.include

# this CPU implementation is using the explicit core/CPU interface
export CFLAGS += -DCOREIF_NG=1

# export the peripheral drivers to be linked into the final binary
export USEMODULE += periph

# tell the build system that the CPU depends on the Cortex-M common files
export USEMODULE += cortex-m4_common

# define path to cortex-m common module, which is needed for this CPU
export CORTEX_M4_COMMON = $(RIOTCPU)/cortex-m4_common/

# CPU depends on the cortex-m common module, so include it
include $(CORTEX_M4_COMMON)Makefile.include

# define the linker script to use for this CPU
export LINKERSCRIPT = $(RIOTCPU)/$(CPU)/$(CPU_MODEL)_linkerscript.ld

#export the CPU model
MODEL = $(shell echo $(CPU_MODEL)|tr 'a-z' 'A-Z')
export CFLAGS += -DCPU_MODEL_$(MODEL)

# include CPU specific includes
export INCLUDES += -I$(RIOTCPU)/$(CPU)/include

# add the CPU specific system calls implementations for the linker
export UNDEF += $(BINDIR)cpu/syscalls.o
export UNDEF += $(BINDIR)cpu/startup.o