6.12-stable review patch. If anyone has any objections, please let me know.
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From: Jiayuan Chen mrpre@163.com
[ Upstream commit 73b9075f334f5debf28646884a320b796b27768d ]
Currently, when we run the BPF selftests with the following command:
make -C tools/testing/selftests TARGETS=bpf SKIP_TARGETS=""
The command generates untracked files and directories with make version less than 4.4:
''' Untracked files: (use "git add <file>..." to include in what will be committed) tools/testing/selftests/bpfFEATURE-DUMP.selftests tools/testing/selftests/bpffeature/ '''
We lost slash after word "bpf". The reason is slash appending code is as follow:
''' OUTPUT := $(OUTPUT)/ $(eval include ../../../build/Makefile.feature) OUTPUT := $(patsubst %/,%,$(OUTPUT)) '''
This way of assigning values to OUTPUT will never be effective for the variable OUTPUT provided via the command argument [1] and BPF makefile is called from parent Makfile(tools/testing/selftests/Makefile) like:
''' all: ... $(MAKE) OUTPUT=$$BUILD_TARGET -C $$TARGET '''
According to GNU make, we can use override Directive to fix this issue [2].
[1] https://www.gnu.org/software/make/manual/make.html#Overriding [2] https://www.gnu.org/software/make/manual/make.html#Override-Directive
Fixes: dc3a8804d790 ("selftests/bpf: Adapt OUTPUT appending logic to lower versions of Make") Signed-off-by: Jiayuan Chen mrpre@163.com Signed-off-by: Daniel Borkmann daniel@iogearbox.net Acked-by: Jiri Olsa jolsa@kernel.org Link: https://lore.kernel.org/bpf/20241224075957.288018-1-mrpre@163.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/bpf/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 43a0293184785..6fc29996ae293 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -193,9 +193,9 @@ ifeq ($(shell expr $(MAKE_VERSION) >= 4.4), 1) $(let OUTPUT,$(OUTPUT)/,\ $(eval include ../../../build/Makefile.feature)) else -OUTPUT := $(OUTPUT)/ +override OUTPUT := $(OUTPUT)/ $(eval include ../../../build/Makefile.feature) -OUTPUT := $(patsubst %/,%,$(OUTPUT)) +override OUTPUT := $(patsubst %/,%,$(OUTPUT)) endif endif