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154 lines
3.6 KiB
Makefile
154 lines
3.6 KiB
Makefile
MCU = atmega328p
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DUDEMCU = m328p
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TARGET = main
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AVRDUDE_PROGRAMMER = atmelice_isp
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FCPU=1000000UL
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BUILDDIR=build
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OPT = s
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SRC = $(shell find src -name '*.c')
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#SRC = main.c
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FORMAT = ihex
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# List any extra directories to look for include files here.
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# Each directory must be seperated by a space.
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EXTRAINCDIRS = inc
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#### Flags ####
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CFLAGS = -mmcu=$(MCU) -I. \
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-g -O$(OPT) \
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-funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums \
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-Wall -Wstrict-prototypes \
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-Wa,-adhlns=$(<:src/%.c=$(BUILDDIR)/%.lst) \
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-DF_CPU=$(FCPU)\
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$(patsubst %,-I%,$(EXTRAINCDIRS))\
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-std=gnu99
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#-fno-builtin
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LDFLAGS = -Wl,-Map=$(BUILDDIR)/$(TARGET).map,--cref
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# Minimalistic printf version
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#LDFLAGS += -Wl,-u,vfprintf -lprintf_min
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# Floating point printf version (requires -lm below)
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#LDFLAGS += -Wl,-u,vfprintf -lprintf_flt
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# -lm = math library
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LDFLAGS += -lm
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#LDFLAGS += -nostdlib
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AVRDUDE_FLAGS = -p $(DUDEMCU) -c $(AVRDUDE_PROGRAMMER) -U flash:w:$(BUILDDIR)/$(TARGET).hex -B 10
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#### Define programs and commands. ####
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CC = avr-gcc
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OBJCOPY = avr-objcopy
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OBJDUMP = avr-objdump
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SIZE = avr-size
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AVRDUDE = avrdude
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REMOVE = rm -f
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COPY = cp
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# Define all object files.
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OBJ = $(SRC:src/%.c=$(BUILDDIR)/%.o)
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# Define all listing files.
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LST = $(SRC:src/%.c=$(BUILDDIR)/%.lst)
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# Default target: make program!
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all: $(TARGET).elf
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# $(BUILDDIR)/$(TARGET).lss $(BUILDDIR)/$(TARGET).sym
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# $(AVRDUDE) $(AVRDUDE_FLAGS) $(AVRDUDE_WRITE_FLASH) $(AVRDUDE_WRITE_EEPROM)
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# Program the device.
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program: $(BUILDDIR)/$(TARGET).hex $(BUILDDIR)/$(TARGET).eep
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$(AVRDUDE) $(AVRDUDE_FLAGS)
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# Create final output files (.hex, .eep) from ELF output file.
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$(BUILDDIR)/%.hex: %.elf
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@echo
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@echo "creating ihex"
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$(OBJCOPY) -O $(FORMAT) -R .eeprom $< $@
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$(BUILDDIR)/%.eep: %.elf
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@echo
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@echo "eeprom"
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-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
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--change-section-lma .eeprom=0 -O $(FORMAT) $< $@
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# Create extended listing file from ELF output file.
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$(BUILDDIR)/%.lss: %.elf
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@echo
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@echo "listing"
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$(OBJDUMP) -h -S $< > $@
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# Create a symbol table from ELF output file.
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$(BUILDDIR)/%.sym: %.elf
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@echo
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@echo "symbol table"
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avr-nm -n $< > $@
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# Link: create ELF output file from object files.
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#.SECONDARY : $(BUILDDIR)/$(TARGET).elf
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#.PRECIOUS : $(OBJ)
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$(TARGET).elf: $(OBJ)
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@echo
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@echo "linking: " $(OBJ)
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$(CC) $(CFLAGS) $(OBJ) --output $@ $(LDFLAGS)
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# Compile: create object files from C source files.
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$(BUILDDIR)/%.o : src/%.c
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@echo
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@echo "compiling" $<
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$(CC) -c $(CFLAGS) $< -o $@
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# Target: clean project.
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clean:
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@echo
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@echo "cleaning"
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$(REMOVE) $(BUILDDIR)/$(TARGET).hex
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$(REMOVE) $(BUILDDIR)/$(TARGET).eep
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$(REMOVE) $(BUILDDIR)/$(TARGET).obj
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$(REMOVE) $(BUILDDIR)/$(TARGET).cof
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$(REMOVE) $(TARGET).elf
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$(REMOVE) $(BUILDDIR)/$(TARGET).map
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$(REMOVE) $(BUILDDIR)/$(TARGET).obj
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$(REMOVE) $(BUILDDIR)/$(TARGET).a90
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$(REMOVE) $(BUILDDIR)/$(TARGET).sym
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$(REMOVE) $(BUILDDIR)/$(TARGET).lnk
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$(REMOVE) $(BUILDDIR)/$(TARGET).lss
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$(REMOVE) $(OBJ)
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$(REMOVE) $(LST)
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$(REMOVE) $(SRC:src/%.c=$(BUILDDIR)/%.s)
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$(REMOVE) $(SRC:src/%.c=$(BUILDDIR)/%.d)
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$(REMOVE) $(BUILDDIR)/*~
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# Automatically generate C source code dependencies.
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# (Code originally taken from the GNU make user manual and modified
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# (See README.txt Credits).)
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#
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# Note that this will work with sh (bash) and sed that is shipped with WinAVR
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# (see the SHELL variable defined above).
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# This may not work with other shells or other seds.
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#
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$(BUILDDIR)/%.d: %.c
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set -e; $(CC) -MM $(CFLAGS) $< \
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| sed 's,\(.*\)\.o[ :]*,\1.o \1.d : ,g' > $@; \
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[ -s $@ ] || rm -f $@
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# Remove the '-' if you want to see the dependency files generated.
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-include $(SRC:.c=.d)
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# Listing of phony targets.
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.PHONY : all clean program
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