7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sasha Levin commit 52336337f1a01ad803c7f3ddb23f40222e9ad58d upstream. "make O= tools/gpio" fails: Makefile:27: /tools/build/Makefile.include: No such file or directory tools/Makefile clears srctree, and the gpio Makefile only works it out again when building_out_of_srctree is not set, which the top-level Makefile sets for O= builds. Also work out srctree when it is empty, as tools/bpf/Makefile does since commit a89b2cbf71d64 ("tools, bpf: Fix build for 'make -s tools/bpf O='"). Fixes: 4a6a6f5c4aeed ("tools: gpio: Use !building_out_of_srctree to determine srctree") Cc: stable@vger.kernel.org Assisted-by: LLM Signed-off-by: Sasha Levin Link: https://patch.msgid.link/20261011223358.2327625-5-sashal@kernel.org Signed-off-by: Bartosz Golaszewski Signed-off-by: Greg Kroah-Hartman --- tools/gpio/Makefile | 6 ++++++ 1 file changed, 6 insertions(+) --- a/tools/gpio/Makefile +++ b/tools/gpio/Makefile @@ -7,7 +7,13 @@ bindir ?= /usr/bin # isn't set and when invoked from selftests build, where srctree # is set to ".". building_out_of_srctree is undefined for in srctree # builds +ifeq ($(srctree),) +update_srctree := 1 +endif ifndef building_out_of_srctree +update_srctree := 1 +endif +ifeq ($(update_srctree),1) srctree := $(patsubst %/,%,$(dir $(CURDIR))) srctree := $(patsubst %/,%,$(dir $(srctree))) endif