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SOURCES := main.c mspdebug_wrapper.c
SOURCES += mspdebug/drivers/jtaglib.c
BUILDDIR ?= build
BINARY := safetyreset
LDSCRIPT := stm32f407.ld
LIBNAME := opencm3_stm32f4
OPENCM3_DIR ?= libopencm3
PREFIX ?= arm-none-eabi-
CC := $(PREFIX)gcc
CXX := $(PREFIX)g++
LD := $(PREFIX)gcc
AR := $(PREFIX)ar
AS := $(PREFIX)as
OBJCOPY := $(PREFIX)objcopy
OBJDUMP := $(PREFIX)objdump
GDB := $(PREFIX)gdb
CFLAGS += -I$(OPENCM3_DIR)/include -Imspdebug/util -Imspdebug/drivers
CFLAGS += -Os -std=c11 -g -DSTM32F4
# Note: libopencm3 requires some standard libc definitions from stdint.h and stdbool.h, so we don't pass -nostdinc here.
CFLAGS += -nostdlib -ffreestanding
CFLAGS += -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -g
CFLAGS += -Wextra -Wshadow -Wimplicit-function-declaration -Wundef
CFLAGS += -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes
CFLAGS += -fno-common -ffunction-sections -fdata-sections
LDFLAGS += --static -nostartfiles
LDFLAGS += -T$(LDSCRIPT)
LDFLAGS += -mthumb -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -g
LDFLAGS += -Wl,--cre
#LDFLAGS += -Wl,--gc-sections
LDFLAGS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
LDFLAGS += -L$(OPENCM3_DIR)/lib
LDFLAGS += -l$(LIBNAME) $(shell $(CC) -print-libgcc-file-name)
all: elf
elf: $(BUILDDIR)/$(BINARY).elf
bin: $(BUILDDIR)/$(BINARY).bin
hex: $(BUILDDIR)/$(BINARY).hex
srec: $(BUILDDIR)/$(BINARY).srec
list: $(BUILDDIR)/$(BINARY).list
images: $(BUILDDIR)/$(BINARY).images
$(OPENCM3_DIR)/lib/lib$(LIBNAME).a:
echo "Warning, $@ not found, attempting to rebuild in $(OPENCM3_DIR)"
$(MAKE) -C $(OPENCM3_DIR)
OBJS := $(addprefix $(BUILDDIR)/,$(SOURCES:%.c=%.o))
# Define a helper macro for debugging make errors online
# you can type "make print-OPENCM3_DIR" and it will show you
# how that ended up being resolved by all of the included
# makefiles.
print-%:
@echo $*=$($*)
$(BUILDDIR)/%.images: $(BUILDDIR)/%.bin $(BUILDDIR)/%.hex $(BUILDDIR)/%.srec $(BUILDDIR)/%.list $(BUILDDIR)/%.map
$(BUILDDIR)/%.bin: $(BUILDDIR)/%.elf
$(OBJCOPY) -Obinary $< $@
$(BUILDDIR)/%.hex: $(BUILDDIR)/%.elf
$(OBJCOPY) -Oihex $< $@
$(BUILDDIR)/%.srec: $(BUILDDIR)/%.elf
$(OBJCOPY) -Osrec $< $@
$(BUILDDIR)/%.list: $(BUILDDIR)/%.elf
$(OBJDUMP) -S $< > $@
$(BUILDDIR)/%.elf: $(OBJS) $(LDSCRIPT) $(OPENCM3_DIR)/lib/lib$(LIBNAME).a
$(LD) $(OBJS) $(LDFLAGS) -o $@ -Wl,-Map=$*.map
$(BUILDDIR)/%.o: %.c
mkdir -p $(dir $@)
$(CC) $(CFLAGS) -o $@ -c $<
clean:
-rm -r $(BUILDDIR)
.PHONY: images clean elf bin hex srec list
-include $(OBJS:.o=.d)
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