Currently the following command produces an error message:

linux# make kselftest TARGETS=bpf O=/mnt/linux-build # selftests: bpf: test_libbpf.sh # ./test_libbpf.sh: line 23: ./test_libbpf_open: No such file or directory # test_libbpf: failed at file test_l4lb.o # selftests: test_libbpf [FAILED]

The error message might not affect make return code, therefore one might need to grep make output in order to detect it.

The current logic prepends $(OUTPUT) only to the first member of $(TEST_PROGS). After that, run_one() does

cd `dirname $TEST`

For all tests except the first one, `dirname $TEST` is ., which means they cannot access the files generated in $(OUTPUT).

Fix by using $(addprefix) to prepend $(OUTPUT)/ to each member of $(TEST_PROGS).

Fixes: 1a940687e424 ("selftests: lib.mk: copy test scripts and test files for make O=dir run") Signed-off-by: Ilya Leoshkevich iii@linux.ibm.com ---

v1->v2: - Append / to $(OUTPUT). - Use $(addprefix) instead of $(foreach).

v2->v3: - Split the patch in two. - Improve the commit message.

v3->v4: - Drop the first patch. - Add a note regarding make return code to the commit message.

tools/testing/selftests/lib.mk | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk index 1c8a1963d03f..0cf510df1ee2 100644 --- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -75,7 +75,8 @@ ifdef building_out_of_srctree @rsync -aq $(TEST_PROGS) $(TEST_PROGS_EXTENDED) $(TEST_FILES) $(OUTPUT) fi @if [ "X$(TEST_PROGS)" != "X" ]; then - $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) $(OUTPUT)/$(TEST_PROGS)) + $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS) \ + $(addprefix $(OUTPUT)/,$(TEST_PROGS))) else $(call RUN_TESTS, $(TEST_GEN_PROGS) $(TEST_CUSTOM_PROGS)) fi