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openwrt/target/linux/gemini/image/copy-kernel/Makefile
Yousong Zhou 6d819fae53 gemini: image: fix race condition when building copy-kernel.bin
Make treat copy-kernel.o as intermediate and delete it when it's no
longer needed.  This can fail when the same submake was triggered
multiple times for different devices.

	arm-openwrt-linux-muslgnueabi-as  -k -o copy-kernel.o copy-kernel.S
	export MAKEFLAGS= ;make -w -C copy-kernel CROSS_COMPILE=arm-openwrt-linux-muslgnueabi-
	arm-openwrt-linux-muslgnueabi-objcopy -O binary -S copy-kernel.o copy-kernel.bin
	make[5]: Entering directory '/builder/shared-workdir/build/target/linux/gemini/image/copy-kernel'
	arm-openwrt-linux-muslgnueabi-objcopy -O binary -S copy-kernel.o copy-kernel.bin
	rm copy-kernel.o
	make[5]: Leaving directory '/builder/shared-workdir/build/target/linux/gemini/image/copy-kernel'
	# "App" partition is the rootfs
	arm-openwrt-linux-muslgnueabi-objcopy: 'copy-kernel.o': No such file
	Makefile:27: recipe for target 'copy-kernel.bin' failed
	make[5]: Leaving directory '/builder/shared-workdir/build/target/linux/gemini/image/copy-kernel'
	make[5]: *** [copy-kernel.bin] Error 1
	Makefile:244: recipe for target '/builder/shared-workdir/build/build_dir/target-arm_fa526_musl_eabi/linux-gemini/tmp/openwrt-gemini-storlink_sl93512r-ext4-factory.bin' failed
	make[4]: *** [/builder/shared-workdir/build/build_dir/target-arm_fa526_musl_eabi/linux-gemini/tmp/openwrt-gemini-storlink_sl93512r-ext4-factory.bin] Error 2

With this change, output files are directed to $(KDIR)

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2019-09-11 01:31:53 +00:00

39 lines
839 B
Makefile

#
# Makefile for Gemin kernel copy stub
#
# Copyright (C) 2019 Linus Walleij <linus.walleij@linaro.org>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 2 as published
# by the Free Software Foundation.
#
AS := $(CROSS_COMPILE)as
OBJCOPY := $(CROSS_COMPILE)objcopy
BIN_FLAGS := -O binary -S
SRC_DIR := $(CURDIR)/
OUT_DIR := $(if $(O),$(if $(patsubst %/,,$(O)),$(O)/,$(O)),$(SRC_DIR))
all: $(OUT_DIR)copy-kernel.bin
# Don't build dependencies, this may die if $(CC) isn't gcc
dep:
install:
$(OUT_DIR):
mkdir -p $(OUT_DIR)
$(OUT_DIR)%.o : $(SRC_DIR)%.S | $(OUT_DIR)
$(AS) $(ASFLAGS) -k -o $@ $<
$(OUT_DIR)%.bin: $(OUT_DIR)%.o
$(OBJCOPY) $(BIN_FLAGS) $< $@
mrproper: clean
clean:
rm -f $(OUT_DIR)copy-kernel.bin $(OUT_DIR)copy-kernel.o