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# Klipper build system
#
# Copyright (C) 2016 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
# Output directory
OUT=out/
# Kconfig includes
export HOSTCC := $(CC)
export CONFIG_SHELL := sh
export KCONFIG_AUTOHEADER := autoconf.h
export KCONFIG_CONFIG := $(CURDIR)/.config
-include $(KCONFIG_CONFIG)
# Common command definitions
CC=$(CROSS_PREFIX)gcc
AS=$(CROSS_PREFIX)as
LD=$(CROSS_PREFIX)ld
OBJCOPY=$(CROSS_PREFIX)objcopy
OBJDUMP=$(CROSS_PREFIX)objdump
STRIP=$(CROSS_PREFIX)strip
CPP=cpp
PYTHON=python
# Source files
src-y=sched.c command.c stepper.c basecmd.c gpiocmds.c spicmds.c endstop.c
DIRS=src src/avr src/simulator
# Default compiler flags
cc-option=$(shell if test -z "`$(1) $(2) -S -o /dev/null -xc /dev/null 2>&1`" \
; then echo "$(2)"; else echo "$(3)"; fi ;)
CFLAGS-y := -I$(OUT) -Isrc -Os -MD -g \
-Wall -Wold-style-definition $(call cc-option,$(CC),-Wtype-limits,) \
-ffunction-sections -fdata-sections
CFLAGS-y += -flto -fwhole-program
LDFLAGS-y := -Wl,--gc-sections
CPPFLAGS = -P -MD -MT $@
CFLAGS = $(CFLAGS-y)
LDFLAGS = $(LDFLAGS-y)
# Default targets
target-y := $(OUT)klipper.elf
all:
# Run with "make V=1" to see the actual compile commands
ifdef V
Q=
else
Q=@
MAKEFLAGS += --no-print-directory
endif
# Include board specific makefile
-include src/$(patsubst "%",%,$(CONFIG_BOARD_DIRECTORY))/Makefile
################ Common build rules
$(OUT)%.o: %.c $(OUT)autoconf.h $(OUT)board-link
@echo " Compiling $@"
$(Q)$(CC) $(CFLAGS) -c $< -o $@
################ Main build rules
$(OUT)board-link: $(KCONFIG_CONFIG)
@echo " Creating symbolic link $(OUT)board"
$(Q)touch $@
$(Q)ln -Tsf $(PWD)/src/$(CONFIG_BOARD_DIRECTORY) $(OUT)board
$(OUT)declfunc.lds: src/declfunc.lds.S
@echo " Precompiling $@"
$(Q)$(CPP) $(CPPFLAGS) -D__ASSEMBLY__ $< -o $@
$(OUT)klipper.o: $(patsubst %.c, $(OUT)src/%.o,$(src-y)) $(OUT)declfunc.lds
@echo " Linking $@"
$(Q)$(CC) $(CFLAGS) -Wl,-r -Wl,-T,$(OUT)declfunc.lds -nostdlib $(patsubst %.c, $(OUT)src/%.o,$(src-y)) -o $@
$(OUT)compile_time_request.o: $(OUT)klipper.o ./scripts/buildcommands.py
@echo " Building $@"
$(Q)$(OBJCOPY) -j '.compile_time_request' -O binary $< $(OUT)klipper.o.compile_time_request
$(Q)$(PYTHON) ./scripts/buildcommands.py $(OUT)klipper.o.compile_time_request $(OUT)autoconf.h $(OUT)compile_time_request.c
$(Q)$(CC) $(CFLAGS) -c $(OUT)compile_time_request.c -o $@
$(OUT)klipper.elf: $(OUT)klipper.o $(OUT)compile_time_request.o
@echo " Linking $@"
$(Q)$(CC) $(CFLAGS) $(LDFLAGS) $^ -o $@
################ Kconfig rules
define do-kconfig
$(Q)mkdir -p $(OUT)/scripts/kconfig/lxdialog
$(Q)mkdir -p $(OUT)/include/config
$(Q)mkdir -p $(addprefix $(OUT), $(DIRS))
$(Q)$(MAKE) -C $(OUT) -f $(CURDIR)/scripts/kconfig/Makefile srctree=$(CURDIR) src=scripts/kconfig obj=scripts/kconfig Q=$(Q) Kconfig=$(CURDIR)/src/Kconfig $1
endef
$(OUT)autoconf.h : $(KCONFIG_CONFIG) ; $(call do-kconfig, silentoldconfig)
$(KCONFIG_CONFIG): src/Kconfig ; $(call do-kconfig, olddefconfig)
%onfig: ; $(call do-kconfig, $@)
help: ; $(call do-kconfig, $@)
################ Generic rules
# Make definitions
.PHONY : all clean distclean FORCE
.DELETE_ON_ERROR:
all: $(target-y)
clean:
$(Q)rm -rf $(OUT)
distclean: clean
$(Q)rm -f .config .config.old
-include $(patsubst %,$(OUT)%/*.d,$(DIRS))
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