Current makefile for STM32L476 (HAL)

Makefile

# Makefile for ST ARM Cortex microcontrollers

# Important settings should be updated for each project.
# The rest of the makefile can usually be left alone.

#### /!\ IMPORTANT SETTINGS START HERE /!\ #####

# Device options
CPU = cortex-m4
DEVICE = STM32L476xx


ENVDIR = /Users/macegr/Development/ARM
ARMTOOLSDIR = $(ENVDIR)/gcc-arm-none-eabi-6_2/bin
MFGSUPPORTDIR = $(ENVDIR)/STM32/STMDevSupport
DEVICEDIR = $(MFGSUPPORTDIR)/STM32L4xx
DRIVERDIR = $(DEVICEDIR)/STM32Cube_FW_L4_V1.6.0/Drivers
STARTUPDIR = $(DRIVERDIR)/CMSIS/Device/ST/STM32L4xx/Source/Templates/gcc
DEVINC = $(DRIVERDIR)/CMSIS/Device/ST/STM32L4xx/Include
HALINC = $(DRIVERDIR)/STM32L4xx_HAL_Driver/Inc
HALSRC = $(DRIVERDIR)/STM32L4xx_HAL_Driver/Src
CMSISINC = $(DRIVERDIR)/CMSIS/Include
BSPINC = $(DRIVERDIR)/BSP/STM32L476G-Discovery
INCLUDES = -I$(HALINC) -I$(DEVINC) -I$(CMSISINC) -I$(BSPINC) -I.
GENLIBS = libstm32lxxhal.a
LINKSCRIPT = STM32L476link.ld
STARTUPFILE = startup_stm32l476xx.s
STARTUPSRC = $(STARTUPDIR)/$(STARTUPFILE)


# Programmer options
OPENOCD = openocd
OPENOCDDIR = $(MFGSUPPORTDIR)/OpenOCD
OPENOCDCFG = $(OPENOCDDIR)/stm32l4discovery.cfg
OPENOCDCMD = program $(BUILDTARGET).hex verify reset exit


###### /!\ IMPORTANT SETTINGS END HERE /!\ ######

# Source search paths
vpath %.c $(HALSRC)

# Build structure
TARGET = main
BUILDDIR = builds
BUILDTARGET = $(BUILDDIR)/$(TARGET)
OBJDIR = $(BUILDDIR)/obj
DEPDIR = $(BUILDDIR)/dep
CSOURCES = $(wildcard *.c) $(wildcard */*.c)
CPPSOURCES = $(wildcard *.cpp) $(wildcard */*.cpp)
ASOURCES = $(wildcard *.s) $(wildcard */*.s)
ifeq ("$(wildcard $(STARTUPFILE))","")
	ASOURCES += $(STARTUPFILE)
endif
OBJECTS = $(addprefix $(OBJDIR)/, $(CPPSOURCES:.cpp=.o))
OBJECTS += $(addprefix $(OBJDIR)/, $(CSOURCES:.c=.o))
OBJECTS += $(addprefix $(OBJDIR)/, $(ASOURCES:.s=.o))
DEPS = $(addprefix $(DEPDIR)/, $(CPPSOURCES:.cpp=.d))
DEPS += $(addprefix $(DEPDIR)/, $(CSOURCES:.c=.d))
DEPS += $(addprefix $(DEPDIR)/, $(ASOURCES:.s=.d))

# ARM tools location, specify absolute path if necessary
FORMAT = ihex
CC = $(ARMTOOLSDIR)/arm-none-eabi-gcc
SIZE = $(ARMTOOLSDIR)/arm-none-eabi-size
OBJCOPY = $(ARMTOOLSDIR)/arm-none-eabi-objcopy
OBJDUMP = $(ARMTOOLSDIR)/arm-none-eabi-objdump
AR = $(ARMTOOLSDIR)/arm-none-eabi-ar
GDB = $(ARMTOOLSDIR)/arm-none-eabi-gdb
LD = 

# Compiler options
OPTIMIZATION = s
ERRORLEVEL = all
CSTANDARD =
CFLAGS = -W$(ERRORLEVEL) -O$(OPTIMIZATION) -mcpu=$(CPU) -D$(DEVICE)
CFLAGS += -g -fno-builtin
CFLAGS += -mlittle-endian -mthumb -g
CFLAGS += -ffunction-sections -fdata-sections
CFLAGS += -ffreestanding -fno-common -Wno-unused-function
LFLAGS = -Wl,--gc-sections
DEPFLAGS = -MT $@ -MMD -MP -MF $(DEPDIR)/$*.d
REMOVE = rm -f

build: .hex .size

HAL_LIB_SRC = $(wildcard $(HALSRC)/*.c)
HAL_LIB_SRC := $(filter-out %_template.c, $(HAL_LIB_SRC))

HAL_LIB_OBJ = $(HAL_LIB_SRC:.c=.o)
HAL_LOCAL_LIB_OBJ = $(addprefix $(OBJDIR)/, $(notdir $(HAL_LIB_OBJ)))

libstm32lxxhal.a: $(HAL_LOCAL_LIB_OBJ)
	$(AR) -cr $@ $(HAL_LOCAL_LIB_OBJ)
	touch $@

# Copy in the startup file from templates if needed
$(STARTUPFILE):
	cp $(STARTUPSRC) .

# Virtual target for dependency files
$(DEPDIR)/%.d: ;
		@mkdir -p $(dir $@)

# Don't delete dependency files
.PRECIOUS: $(DEPDIR)/%.d

# Don't rebuild deps if cleaning
ifneq ($(MAKECMDGOALS),clean)
-include $(DEPS)
endif


# Build rule for C++ files
# Depends on Makefile to force recompile if any Makefile options changed
$(OBJDIR)/%.o: %.cpp
$(OBJDIR)/%.o: %.cpp Makefile
	@mkdir -p $(dir $@)
	$(CC) $(DEPFLAGS) $(INCLUDES) $(CFLAGS) -c -o $@ $<

# Build rule for C files
# Depends on Makefile to force recompile if any Makefile options changed
$(OBJDIR)/%.o: %.c
$(OBJDIR)/%.o: %.c Makefile
	@mkdir -p $(dir $@)
	$(CC) $(DEPFLAGS) $(INCLUDES) $(CFLAGS) -c -o $@ $<

# Build rule for assembler files
# Depends on Makefile to force recompile if any Makefile options changed
$(OBJDIR)/%.o: %.s
$(OBJDIR)/%.o: %.s Makefile
	@mkdir -p $(dir $@)
	$(CC) $(DEPFLAGS) $(INCLUDES) $(CFLAGS) -c -o $@ $<

# Don't delete object files
.PRECIOUS: $(OBJDIR)/%.o

# Rule for creating ELF files
%.elf: $(OBJECTS) $(GENLIBS)
	@echo "Linking...."
	$(CC) $(INCLUDES) $(CFLAGS) $(LFLAGS) -T$(LINKSCRIPT) -o $@ $(OBJECTS) $(GENLIBS)

# Rule for creating hex files
%.hex: %.elf
	$(OBJCOPY) -O $(FORMAT) $< $@

# Build hex file
.hex: $(BUILDTARGET).hex

# Display the flash and RAM size
.size: $(BUILDTARGET).elf
	$(SIZE) $<

# Write the hex file to the device
program: $(BUILDTARGET).hex .size
	@echo "Uploading firmware..."
	$(OPENOCD) -f $(OPENOCDCFG) -c "$(OPENOCDCMD)"
	@echo "Done uploading."

# Delete any compiled code and dependency files
# Avoiding recursive delete due to potential for mistakes
clean:
	@echo "Cleaning..."
	-$(REMOVE) $(OBJECTS)
	-$(REMOVE) $(DEPDIR)/*.d
	-$(REMOVE) $(HAL_LOCAL_LIB_OBJ)
	-$(REMOVE) $(BUILDTARGET).hex $(BUILDTARGET).elf
	-$(REMOVE) $(HALSRC)/*.o
	-$(REMOVE) $(GENLIBS)
	-find $(BUILDDIR) -type d -empty -delete
	@echo "Done cleaning."