127 lines
3.4 KiB
Makefile
127 lines
3.4 KiB
Makefile
# Klipper build system
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#
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# Copyright (C) 2016 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 HOSTCC := $(CC)
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export CONFIG_SHELL := sh
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export KCONFIG_AUTOHEADER := autoconf.h
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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=$(CROSS_PREFIX)strip
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CPP=cpp
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PYTHON=python
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# Source files
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src-y =
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dirs-y = src
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# Default compiler flags
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cc-option=$(shell if test -z "`$(1) $(2) -S -o /dev/null -xc /dev/null 2>&1`" \
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; then echo "$(2)"; else echo "$(3)"; fi ;)
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CFLAGS-y := -I$(OUT) -Isrc -I$(OUT)board-generic/ -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-y += -flto -fwhole-program
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LDFLAGS-y := -Wl,--gc-sections
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CPPFLAGS = -I$(OUT) -P -MD -MT $@
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CFLAGS = $(CFLAGS-y)
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LDFLAGS = $(LDFLAGS-y)
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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 "%",%,$(CONFIG_BOARD_DIRECTORY))/Makefile
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################ Common build rules
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$(OUT)%.o: %.c $(OUT)autoconf.h $(OUT)board-link
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@echo " Compiling $@"
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$(Q)$(CC) $(CFLAGS) -c $< -o $@
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################ Main build rules
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$(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)touch $@
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$(Q)ln -Tsf $(PWD)/src/$(CONFIG_BOARD_DIRECTORY) $(OUT)board
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$(Q)mkdir -p $(OUT)board-generic
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$(Q)ln -Tsf $(PWD)/src/generic $(OUT)board-generic/board
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$(OUT)declfunc.lds: src/declfunc.lds.S
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@echo " Precompiling $@"
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$(Q)$(CPP) $(CPPFLAGS) -D__ASSEMBLY__ $< -o $@
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$(OUT)klipper.o: $(patsubst %.c, $(OUT)src/%.o,$(src-y)) $(OUT)declfunc.lds
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@echo " Linking $@"
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$(Q)$(CC) $(CFLAGS) -Wl,-r -Wl,-T,$(OUT)declfunc.lds -nostdlib $(patsubst %.c, $(OUT)src/%.o,$(src-y)) -o $@
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$(OUT)compile_time_request.o: $(OUT)klipper.o ./scripts/buildcommands.py
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@echo " Building $@"
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$(Q)$(OBJCOPY) --dump-section '.compile_time_request'=$(OUT)klipper.o.compile_time_request $<
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$(Q)$(PYTHON) ./scripts/buildcommands.py $(OUT)klipper.o.compile_time_request $(OUT)autoconf.h $(OUT)compile_time_request.c
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$(Q)$(CC) $(CFLAGS) -c $(OUT)compile_time_request.c -o $@
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$(OUT)klipper.elf: $(OUT)klipper.o $(OUT)compile_time_request.o
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@echo " Linking $@"
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$(Q)$(CC) $(CFLAGS) $(LDFLAGS) $^ -o $@
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################ Kconfig rules
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define do-kconfig
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$(Q)mkdir -p $(OUT)/scripts/kconfig/lxdialog
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$(Q)mkdir -p $(OUT)/include/config
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$(Q)$(MAKE) -C $(OUT) -f $(CURDIR)/scripts/kconfig/Makefile srctree=$(CURDIR) src=scripts/kconfig obj=scripts/kconfig Q=$(Q) Kconfig=$(CURDIR)/src/Kconfig $1
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endef
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$(OUT)autoconf.h : $(KCONFIG_CONFIG) ; $(call do-kconfig, silentoldconfig)
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$(KCONFIG_CONFIG): src/Kconfig ; $(call do-kconfig, olddefconfig)
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%onfig: ; $(call do-kconfig, $@)
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help: ; $(call do-kconfig, $@)
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################ Generic rules
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# Make definitions
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.PHONY : all clean distclean 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 $(patsubst %,$(OUT)%/*.d,$(dirs-y))
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