129 lines
3.6 KiB
Makefile
129 lines
3.6 KiB
Makefile
# Klipper build system
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#
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# Copyright (C) 2016-2020 Kevin O'Connor <kevin@koconnor.net>
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#
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# This file may be distributed under the terms of the GNU GPLv3 license.
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# Output directory
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OUT=out/
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# Kconfig includes
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export KCONFIG_CONFIG := $(CURDIR)/.config
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-include $(KCONFIG_CONFIG)
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# Common command definitions
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CC=$(CROSS_PREFIX)gcc
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AS=$(CROSS_PREFIX)as
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LD=$(CROSS_PREFIX)ld
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OBJCOPY=$(CROSS_PREFIX)objcopy
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OBJDUMP=$(CROSS_PREFIX)objdump
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STRIP=$(CROSS_PREFIX)strip
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CPP=cpp
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PYTHON=python2
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# Source files
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src-y =
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dirs-y = src
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# Default compiler flags
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cc-option=$(shell if test -z "`$(1) $(2) -S -o /dev/null -xc /dev/null 2>&1`" \
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; then echo "$(2)"; else echo "$(3)"; fi ;)
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CFLAGS := -I$(OUT) -Isrc -I$(OUT)board-generic/ -std=gnu11 -O2 -MD -g \
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-Wall -Wold-style-definition $(call cc-option,$(CC),-Wtype-limits,) \
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-ffunction-sections -fdata-sections
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CFLAGS += -flto -fwhole-program -fno-use-linker-plugin
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OBJS_klipper.elf = $(patsubst %.c, $(OUT)src/%.o,$(src-y))
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OBJS_klipper.elf += $(OUT)compile_time_request.o
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CFLAGS_klipper.elf = $(CFLAGS) -Wl,--gc-sections
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CPPFLAGS = -I$(OUT) -P -MD -MT $@
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# Default targets
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target-y := $(OUT)klipper.elf
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all:
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# Run with "make V=1" to see the actual compile commands
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ifdef V
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Q=
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else
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Q=@
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MAKEFLAGS += --no-print-directory
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endif
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# Include board specific makefile
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include src/Makefile
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-include src/$(patsubst "%",%,$(CONFIG_BOARD_DIRECTORY))/Makefile
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################ Main build rules
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$(OUT)%.o: %.c $(OUT)autoconf.h
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@echo " Compiling $@"
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$(Q)$(CC) $(CFLAGS) -c $< -o $@
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$(OUT)%.ld: %.lds.S $(OUT)autoconf.h
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@echo " Preprocessing $@"
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$(Q)$(CPP) -I$(OUT) -P -MD -MT $@ $< -o $@
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$(OUT)klipper.elf: $(OBJS_klipper.elf)
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@echo " Linking $@"
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$(Q)$(CC) $(OBJS_klipper.elf) $(CFLAGS_klipper.elf) -o $@
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$(Q)scripts/check-gcc.sh $@ $(OUT)compile_time_request.o
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################ Compile time requests
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$(OUT)%.o.ctr: $(OUT)%.o
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$(Q)$(OBJCOPY) -j '.compile_time_request' -O binary $^ $@
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$(OUT)compile_time_request.o: $(patsubst %.c, $(OUT)src/%.o.ctr,$(src-y)) ./scripts/buildcommands.py
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@echo " Building $@"
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$(Q)cat $(patsubst %.c, $(OUT)src/%.o.ctr,$(src-y)) | tr -s '\0' '\n' > $(OUT)compile_time_request.txt
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$(Q)$(PYTHON) ./scripts/buildcommands.py -d $(OUT)klipper.dict -t "$(CC);$(AS);$(LD);$(OBJCOPY);$(OBJDUMP);$(STRIP)" $(OUT)compile_time_request.txt $(OUT)compile_time_request.c
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$(Q)$(CC) $(CFLAGS) -c $(OUT)compile_time_request.c -o $@
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################ Auto generation of "board/" include file link
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$(OUT)board-link: $(KCONFIG_CONFIG)
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@echo " Creating symbolic link $(OUT)board"
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$(Q)mkdir -p $(addprefix $(OUT), $(dirs-y))
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$(Q)echo "#$(CONFIG_BOARD_DIRECTORY)" > $@.temp
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$(Q)if ! cmp -s $@.temp $@; then rm -f $(OUT)*.d $(patsubst %,$(OUT)%/*.d,$(dirs-y)) ; mv $@.temp $@ ; fi
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$(Q)rm -f $(OUT)board
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$(Q)ln -sf $(CURDIR)/src/$(CONFIG_BOARD_DIRECTORY) $(OUT)board
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$(Q)mkdir -p $(OUT)board-generic
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$(Q)rm -f $(OUT)board-generic/board
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$(Q)ln -sf $(CURDIR)/src/generic $(OUT)board-generic/board
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include $(OUT)board-link
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################ Kconfig rules
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$(OUT)autoconf.h: $(KCONFIG_CONFIG)
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@echo " Building $@"
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$(Q)mkdir -p $(OUT)
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$(Q) KCONFIG_AUTOHEADER=$@ $(PYTHON) lib/kconfiglib/genconfig.py src/Kconfig
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$(KCONFIG_CONFIG) olddefconfig: src/Kconfig
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$(Q)$(PYTHON) lib/kconfiglib/olddefconfig.py src/Kconfig
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menuconfig:
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$(Q)$(PYTHON) lib/kconfiglib/menuconfig.py src/Kconfig
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################ Generic rules
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# Make definitions
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.PHONY : all clean distclean olddefconfig menuconfig FORCE
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.DELETE_ON_ERROR:
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all: $(target-y)
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clean:
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$(Q)rm -rf $(OUT)
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distclean: clean
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$(Q)rm -f .config .config.old
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-include $(OUT)*.d $(patsubst %,$(OUT)%/*.d,$(dirs-y))
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