klipper update

Makefile

@@ -0,0 +1,132 @@
+# Klipper build system
+#
+# Copyright (C) 2016-2020  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 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=$(CROSS_PREFIX)strip
+CPP=cpp
+PYTHON=python3
+
+# Source files
+src-y =
+dirs-y = src
+
+# Default compiler flags
+cc-option=$(shell if test -z "`$(1) $(2) -S -o /dev/null -xc /dev/null 2>&1`" \
+    ; then echo "$(2)"; else echo "$(3)"; fi ;)
+
+CFLAGS := -I$(OUT) -Isrc -I$(OUT)board-generic/ -std=gnu11 -O2 -MD \
+    -Wall -Wold-style-definition $(call cc-option,$(CC),-Wtype-limits,) \
+    -ffunction-sections -fdata-sections -fno-delete-null-pointer-checks
+CFLAGS += -flto -fwhole-program -fno-use-linker-plugin -ggdb3
+
+OBJS_klipper.elf = $(patsubst %.c, $(OUT)src/%.o,$(src-y))
+OBJS_klipper.elf += $(OUT)compile_time_request.o
+CFLAGS_klipper.elf = $(CFLAGS) -Wl,--gc-sections
+
+CPPFLAGS = -I$(OUT) -P -MD -MT $@
+
+# Default targets
+target-y := $(OUT)klipper.elf
+
+all:
+
+# Run with "make V=1" to see the actual compile commands
+ifdef V
+Q=
+else
+Q=@
+MAKEFLAGS += --no-print-directory
+endif
+
+# Include board specific makefile
+include src/Makefile
+-include src/$(patsubst "%",%,$(CONFIG_BOARD_DIRECTORY))/Makefile
+
+################ Main build rules
+
+$(OUT)%.o: %.c $(OUT)autoconf.h
+	@echo "  Compiling $@"
+	$(Q)$(CC) $(CFLAGS) -c $< -o $@
+
+$(OUT)%.ld: %.lds.S $(OUT)autoconf.h
+	@echo "  Preprocessing $@"
+	$(Q)$(CPP) -I$(OUT) -P -MD -MT $@ $< -o $@
+
+$(OUT)klipper.elf: $(OBJS_klipper.elf)
+	@echo "  Linking $@"
+	$(Q)$(CC) $(OBJS_klipper.elf) $(CFLAGS_klipper.elf) -o $@
+	$(Q)scripts/check-gcc.sh $@ $(OUT)compile_time_request.o
+
+################ Compile time requests
+
+$(OUT)%.o.ctr: $(OUT)%.o
+	$(Q)$(OBJCOPY) -j '.compile_time_request' -O binary $^ $@
+
+$(OUT)compile_time_request.o: $(patsubst %.c, $(OUT)src/%.o.ctr,$(src-y)) ./scripts/buildcommands.py
+	@echo "  Building $@"
+	$(Q)cat $(patsubst %.c, $(OUT)src/%.o.ctr,$(src-y)) | tr -s '\0' '\n' > $(OUT)compile_time_request.txt
+	$(Q)$(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
+	$(Q)$(CC) $(CFLAGS) -c $(OUT)compile_time_request.c -o $@
+
+################ Auto generation of "board/" include file link
+
+create-board-link:
+	@echo "  Creating symbolic link $(OUT)board"
+	$(Q)mkdir -p $(addprefix $(OUT), $(dirs-y))
+	$(Q)rm -f $(OUT)*.d $(patsubst %,$(OUT)%/*.d,$(dirs-y))
+	$(Q)rm -f $(OUT)board
+	$(Q)ln -sf $(CURDIR)/src/$(CONFIG_BOARD_DIRECTORY) $(OUT)board
+	$(Q)mkdir -p $(OUT)board-generic
+	$(Q)rm -f $(OUT)board-generic/board
+	$(Q)ln -sf $(CURDIR)/src/generic $(OUT)board-generic/board
+
+# Hack to rebuild OUT directory and reload make dependencies on Kconfig change
+$(OUT)board-link: $(KCONFIG_CONFIG)
+	$(Q)mkdir -p $(OUT)
+	$(Q)echo "# Makefile board-link rule" > $@
+	$(Q)$(MAKE) create-board-link
+include $(OUT)board-link
+
+################ Kconfig rules
+
+$(OUT)autoconf.h: $(KCONFIG_CONFIG)
+	@echo "  Building $@"
+	$(Q)mkdir -p $(OUT)
+	$(Q) KCONFIG_AUTOHEADER=$@ $(PYTHON) lib/kconfiglib/genconfig.py src/Kconfig
+
+$(KCONFIG_CONFIG) olddefconfig: src/Kconfig
+	$(Q)$(PYTHON) lib/kconfiglib/olddefconfig.py src/Kconfig
+
+menuconfig:
+	$(Q)$(PYTHON) lib/kconfiglib/menuconfig.py src/Kconfig
+
+################ Generic rules
+
+# Make definitions
+.PHONY : all clean distclean olddefconfig menuconfig create-board-link FORCE
+.DELETE_ON_ERROR:
+
+all: $(target-y)
+
+clean:
+	$(Q)rm -rf $(OUT)
+
+distclean: clean
+	$(Q)rm -f .config .config.old
+
+-include $(OUT)*.d $(patsubst %,$(OUT)%/*.d,$(dirs-y))