ifeq ($(TOOLCHAIN),gcc) CFLAGS += \ -mthumb \ -mcpu=cortex-m4 \ -mfloat-abi=hard \ -mfpu=fpv4-sp-d16 \ else ifeq ($(TOOLCHAIN),clang) CFLAGS += \ --target=arm-none-eabi \ -mcpu=cortex-m4 \ -mfpu=fpv4-sp-d16 \ else ifeq ($(TOOLCHAIN),iar) CFLAGS += --cpu cortex-m4 --fpu VFPv4-SP ASFLAGS += --cpu cortex-m4 --fpu VFPv4-SP else $(error "TOOLCHAIN is not supported") endif FREERTOS_PORTABLE_SRC ?= $(FREERTOS_PORTABLE_PATH)/ARM_CM4F