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183 lines
5.1 KiB
183 lines
5.1 KiB
##
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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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## Copyright (C) 2013 Frantisek Burian <BuFran@seznam.cz>
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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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# 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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endif
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###############################################################################
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# Executables
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PREFIX ?= arm-none-eabi
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CC := $(PREFIX)-gcc
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LD := $(PREFIX)-gcc
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AR := $(PREFIX)-ar
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AS := $(PREFIX)-as
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OBJCOPY := $(PREFIX)-objcopy
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OBJDUMP := $(PREFIX)-objdump
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GDB := $(PREFIX)-gdb
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STFLASH = $(shell which st-flash)
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STYLECHECK := /checkpatch.pl
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STYLECHECKFLAGS := --no-tree -f --terse --mailback
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STYLECHECKFILES := $(shell find . -name '*.[ch]')
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###############################################################################
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# Source files
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LDSCRIPT ?= $(BINARY).ld
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ifeq ($(strip $(OPENCM3_DIR)),)
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# user has not specified the library path, so we try to detect it
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# where we search for the library
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LIBPATHS := ./libopencm3 ../../../../libopencm3 ../../../../../libopencm3
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OPENCM3_DIR := $(wildcard $(LIBPATHS:=/locm3.sublime-project))
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OPENCM3_DIR := $(firstword $(dir $(OPENCM3_DIR)))
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ifeq ($(strip $(OPENCM3_DIR)),)
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$(warning Cannot find libopencm3 library in the standard search paths.)
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$(error Please specify it through OPENCM3_DIR variable!)
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endif
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endif
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ifeq ($(V),1)
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$(info Using $(OPENCM3_DIR) path to library)
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endif
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INCLUDE_DIR = $(OPENCM3_DIR)/include
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LIB_DIR = $(OPENCM3_DIR)/lib
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SCRIPT_DIR = $(OPENCM3_DIR)/scripts
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###############################################################################
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# C flags
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CFLAGS += -Os -g
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CFLAGS += -Wextra -Wshadow -Wimplicit-function-declaration
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CFLAGS += -Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes
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CFLAGS += -fno-common -ffunction-sections -fdata-sections
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CPPFLAGS += -MD
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CPPFLAGS += -Wall -Wundef
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CPPFLAGS += -I$(INCLUDE_DIR) $(DEFS)
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###############################################################################
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# Linker flags
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LDFLAGS += --static -nostartfiles
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LDFLAGS += -L$(LIB_DIR)
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LDFLAGS += -T$(LDSCRIPT)
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LDFLAGS += -Wl,-Map=$(*).map
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LDFLAGS += -Wl,--gc-sections
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ifeq ($(V),99)
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LDFLAGS += -Wl,--print-gc-sections
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endif
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###############################################################################
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# Used libraries
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LDLIBS += -l$(LIBNAME)
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LDLIBS += -Wl,--start-group -lc -lgcc -lnosys -Wl,--end-group
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###############################################################################
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###############################################################################
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###############################################################################
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.SUFFIXES: .elf .bin .hex .srec .list .map .images
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.SECONDEXPANSION:
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.SECONDARY:
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all: elf
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elf: $(BINARY).elf
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bin: $(BINARY).bin
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hex: $(BINARY).hex
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srec: $(BINARY).srec
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list: $(BINARY).list
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images: $(BINARY).images
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flash: $(BINARY).flash
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$(LDSCRIPT):
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ifeq (,$(wildcard $(LDSCRIPT)))
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$(error Unable to find specified linker script: $(LDSCRIPT))
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endif
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%.images: %.bin %.hex %.srec %.list %.map
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@#printf "*** $* images generated ***\n"
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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 %.map: $(OBJS) $(LDSCRIPT) $(LIB_DIR)/lib$(LIBNAME).a
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@#printf " LD $(*).elf\n"
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$(Q)$(LD) $(LDFLAGS) $(ARCH_FLAGS) $(OBJS) $(LDLIBS) -o $(*).elf
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%.o: %.c
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@#printf " CC $(*).c\n"
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$(Q)$(CC) $(CFLAGS) $(CPPFLAGS) $(ARCH_FLAGS) -o $(*).o -c $(*).c
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clean:
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@#printf " CLEAN\n"
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$(Q)$(RM) *.o *.d *.elf *.bin *.hex *.srec *.list *.map
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stylecheck: $(STYLECHECKFILES:=.stylecheck)
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styleclean: $(STYLECHECKFILES:=.styleclean)
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# the cat is due to multithreaded nature - we like to have consistent chunks of text on the output
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%.stylecheck: %
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$(Q)$(SCRIPT_DIR)$(STYLECHECK) $(STYLECHECKFLAGS) $* > $*.stylecheck; \
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if [ -s $*.stylecheck ]; then \
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cat $*.stylecheck; \
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else \
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rm -f $*.stylecheck; \
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fi;
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%.styleclean:
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$(Q)rm -f $*.stylecheck;
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%.flash: %.elf
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@printf " GDB $(*).elf (flash)\n"
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$(Q)$(GDB) --batch \
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-ex 'target extended-remote $(STLINK_PORT)' \
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-x flash.scr \
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$(*).elf
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.PHONY: images clean stylecheck styleclean elf bin hex srec list
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-include $(OBJS:.o=.d)
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