b82e7eee52
If an example is in the libopencm3 source directory it will use the locally built library instead of the system library. When you copy an example out of the libopencm3 tree it will automatically detect it and build using the system wide installation.
130 lines
3.5 KiB
Makefile
130 lines
3.5 KiB
Makefile
##
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## This file is part of the libopencm3 project.
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##
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## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
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## Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
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##
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## This library is free software: you can redistribute it and/or modify
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## it under the terms of the GNU Lesser General Public License as published by
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## the Free Software Foundation, either version 3 of the License, or
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## (at your option) any later version.
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##
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## This library is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU Lesser General Public License for more details.
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##
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## You should have received a copy of the GNU Lesser General Public License
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## along with this library. If not, see <http://www.gnu.org/licenses/>.
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##
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PREFIX ?= arm-none-eabi
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#PREFIX ?= arm-elf
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CC = $(PREFIX)-gcc
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LD = $(PREFIX)-gcc
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OBJCOPY = $(PREFIX)-objcopy
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OBJDUMP = $(PREFIX)-objdump
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ifeq ($(shell ls ../../../../../lib/libopencm3_lm3s.a 2>/dev/null),)
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TOOLCHAIN_DIR := $(shell dirname `which $(CC)`)/../$(PREFIX)
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else
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ifeq ($(V),1)
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$(info We seem to be building the example in the source directory. Using local library!)
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endif
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TOOLCHAIN_DIR := ../../../..
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endif
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CFLAGS += -O0 -g3 -Wall -Wextra -I$(TOOLCHAIN_DIR)/include -fno-common \
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-mcpu=cortex-m3 -mthumb -MD
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LDSCRIPT ?= $(BINARY).ld
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LDFLAGS += -L$(TOOLCHAIN_DIR)/lib \
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-T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections
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OBJS += $(BINARY).o
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OOCD ?= openocd
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OOCD_INTERFACE ?= flossjtag
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OOCD_BOARD ?= olimex_stm32_h103
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# FIXME
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# Be silent per default, but 'make V=1' will show all compiler calls.
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ifneq ($(V),1)
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Q := @
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NULL := 2>/dev/null
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else
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LDFLAGS += -Wl,--print-gc-sections
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endif
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.SUFFIXES: .elf .bin .hex .srec .list .images
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.SECONDEXPANSION:
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.SECONDARY:
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all: images
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images: $(BINARY).images
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flash: $(BINARY).flash
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%.images: %.bin %.hex %.srec %.list
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@#echo "*** $* images generated ***"
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%.bin: %.elf
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@#printf " OBJCOPY $(*).bin\n"
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$(Q)$(OBJCOPY) -Obinary $(*).elf $(*).bin
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%.hex: %.elf
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@#printf " OBJCOPY $(*).hex\n"
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$(Q)$(OBJCOPY) -Oihex $(*).elf $(*).hex
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%.srec: %.elf
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@#printf " OBJCOPY $(*).srec\n"
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$(Q)$(OBJCOPY) -Osrec $(*).elf $(*).srec
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%.list: %.elf
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@#printf " OBJDUMP $(*).list\n"
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$(Q)$(OBJDUMP) -S $(*).elf > $(*).list
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%.elf: $(OBJS) $(LDSCRIPT) $(TOOLCHAIN_DIR)/lib/libopencm3_lm3s.a
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@#printf " LD $(subst $(shell pwd)/,,$(@))\n"
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$(Q)$(LD) $(LDFLAGS) -o $(*).elf $(OBJS) -lopencm3_lm3s
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%.o: %.c Makefile
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@#printf " CC $(subst $(shell pwd)/,,$(@))\n"
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$(Q)$(CC) $(CFLAGS) -o $@ -c $<
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clean:
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$(Q)rm -f *.o
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$(Q)rm -f *.d
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$(Q)rm -f *.elf
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$(Q)rm -f *.bin
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$(Q)rm -f *.hex
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$(Q)rm -f *.srec
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$(Q)rm -f *.list
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# FIXME: Replace STM32 stuff with proper LPC13XX OpenOCD support later.
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ifeq ($(OOCD_SERIAL),)
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%.flash: %.hex
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@printf " FLASH $<\n"
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@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
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$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
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-f board/$(OOCD_BOARD).cfg \
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-c "init" -c "reset init" \
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-c "stm32x mass_erase 0" \
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-c "flash write_image $(*).hex" \
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-c "reset" \
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-c "shutdown" $(NULL)
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else
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%.flash: %.hex
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@printf " FLASH $<\n"
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@# IMPORTANT: Don't use "resume", only "reset" will work correctly!
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$(Q)$(OOCD) -f interface/$(OOCD_INTERFACE).cfg \
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-f board/$(OOCD_BOARD).cfg \
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-c "ft2232_serial $(OOCD_SERIAL)" \
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-c "init" -c "reset init" \
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-c "stm32x mass_erase 0" \
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-c "flash write_image $(*).hex" \
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-c "reset" \
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-c "shutdown" $(NULL)
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endif
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.PHONY: images clean
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-include $(OBJS:.o=.d)
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