keychron_qmk_firmware/tool/mbed/gcc.mk

# based on Makefile exported form mbed.org
# see http://mbed.org/handbook/Exporting-to-GCC-ARM-Embedded

GCC_BIN = 
AS      = $(GCC_BIN)arm-none-eabi-as
CC      = $(GCC_BIN)arm-none-eabi-gcc
CPP     = $(GCC_BIN)arm-none-eabi-g++
LD      = $(GCC_BIN)arm-none-eabi-gcc
OBJCOPY = $(GCC_BIN)arm-none-eabi-objcopy
OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
SIZE 	= $(GCC_BIN)arm-none-eabi-size
CHKSUM  = $(TMK_DIR)/tool/mbed/lpc-vector-checksum

CC_FLAGS += \
	$(CPU) \
	-c \
	-g \
	-fno-common \
	-fmessage-length=0 \
	-Wall \
	-fno-exceptions \
	-ffunction-sections \
	-fdata-sections \
	-fomit-frame-pointer
CC_FLAGS += -MMD -MP

LD_FLAGS = $(CPU) -Wl,--gc-sections --specs=nano.specs
#LD_FLAGS += -u _printf_float -u _scanf_float
LD_FLAGS += -Wl,-Map=$(OBJDIR)/$(PROJECT).map,--cref
LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys

ifeq ($(DEBUG), 1)
  CC_FLAGS += -DDEBUG -O0
else
  CC_FLAGS += -DNDEBUG -Os
endif

all: $(OBJDIR)/$(PROJECT).bin $(OBJDIR)/$(PROJECT).hex

clean:
	rm -f $(OBJDIR)/$(PROJECT).bin $(OBJDIR)/$(PROJECT).elf $(OBJDIR)/$(PROJECT).hex $(OBJDIR)/$(PROJECT).map $(OBJDIR)/$(PROJECT).lst $(OBJECTS) $(DEPS)
	rm -fr $(OBJDIR)

$(OBJDIR)/%.o: %.s
	mkdir -p $(@D)
	$(AS) $(CPU) -o $@ $<

$(OBJDIR)/%.o: %.c
	mkdir -p $(@D)
	$(CC)  $(CC_FLAGS) $(CC_SYMBOLS) -std=gnu99   $(INCLUDE_PATHS) -o $@ $<

$(OBJDIR)/%.o: %.cpp
	mkdir -p $(@D)
	$(CPP) $(CC_FLAGS) $(CC_SYMBOLS) -std=gnu++98 -fno-rtti $(INCLUDE_PATHS) -o $@ $<


$(OBJDIR)/$(PROJECT).elf: $(OBJECTS) $(SYS_OBJECTS)
	$(LD) $(LD_FLAGS) -T$(LINKER_SCRIPT) $(LIBRARY_PATHS) -o $@ $^ $(LIBRARIES) $(LD_SYS_LIBS) $(LIBRARIES) $(LD_SYS_LIBS)
	$(SIZE) $@

$(OBJDIR)/$(PROJECT).bin: $(OBJDIR)/$(PROJECT).elf
	@$(OBJCOPY) -O binary $< $@
ifneq (,$(findstring TARGET_NXP,$(CC_SYMBOLS)))
	@echo
	@echo "For NXP writing vector checksum value into $@ ..."
	@$(CHKSUM) $@
	@echo
endif

$(OBJDIR)/$(PROJECT).hex: $(OBJDIR)/$(PROJECT).elf
	@$(OBJCOPY) -O ihex $< $@

$(OBJDIR)/$(PROJECT).lst: $(OBJDIR)/$(PROJECT).elf
	@$(OBJDUMP) -Sdh $< > $@

lst: $(OBJDIR)/$(PROJECT).lst

size:
	$(SIZE) $(OBJDIR)/$(PROJECT).elf

prog:	$(OBJDIR)/$(PROJECT).bin
	@echo "Program..."
ifneq ($(shell mount | grep 'CRP DISABLD'),)
	umount /dev/nxpisp >/dev/null 2>&1
endif
	dd if=$< of=/dev/nxpisp seek=4

DEPS = $(OBJECTS:.o=.d) $(SYS_OBJECTS:.o=.d)
-include $(DEPS)