To avoid pollute the source code tree and avoid mrproper for every architecture switch, the O= argument must be supported. Both IMAGE and .config are from the building directory, let's use objtree instead of srctree for them. If no O= option specified, means building kernel in source code tree, objtree should be srctree in such case. Suggested-by: Willy Tarreau <w@xxxxxx> Link: https://lore.kernel.org/lkml/ZK0AB1OXH1s2xYsh@xxxxxx/ Signed-off-by: Zhangjin Wu <falcon@xxxxxxxxxxx> --- tools/testing/selftests/nolibc/Makefile | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile index bfea1ea0b4e7..f5680b9ed85c 100644 --- a/tools/testing/selftests/nolibc/Makefile +++ b/tools/testing/selftests/nolibc/Makefile @@ -9,6 +9,9 @@ ifeq ($(srctree),) srctree := $(patsubst %/tools/testing/selftests/,%,$(dir $(CURDIR))) endif +# add objtree for O= argument, required by IMAGE and .config +objtree ?= $(srctree) + ifeq ($(ARCH),) include $(srctree)/scripts/subarch.include ARCH = $(SUBARCH) @@ -194,12 +197,12 @@ initramfs: nolibc-test # common macros for kernel targets MAKE_KERNEL = $(MAKE) -C $(srctree) ARCH=$(ARCH) CC=$(CC) CROSS_COMPILE=$(CROSS_COMPILE) -KERNEL_CONFIG = $(srctree)/.config -KERNEL_IMAGE = $(srctree)/$(IMAGE) +KERNEL_CONFIG = $(objtree)/.config +KERNEL_IMAGE = $(objtree)/$(IMAGE) defconfig: $(Q)$(MAKE_KERNEL) mrproper $(DEFCONFIG) prepare - $(Q)$(srctree)/scripts/kconfig/merge_config.sh -O "$(srctree)" -m "$(KERNEL_CONFIG)" $(foreach c,$(EXTCONFIG),$(wildcard $(CURDIR)/configs/$c)) + $(Q)$(srctree)/scripts/kconfig/merge_config.sh -O "$(objtree)" -m "$(KERNEL_CONFIG)" $(foreach c,$(EXTCONFIG),$(wildcard $(CURDIR)/configs/$c)) $(Q)$(MAKE_KERNEL) KCONFIG_ALLCONFIG="$(KERNEL_CONFIG)" allnoconfig kernel: initramfs -- 2.25.1
