Re: [PATCH v5 3/7] selftests/seccomp: Force rebuild according to dependencies

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Hi Shuah,

On 02/06/2017 21:31, Shuah Khan wrote:
> Hi Mickaël,
> 
> On 05/26/2017 12:43 PM, Mickaël Salaün wrote:
>> Rebuild the seccomp tests when kselftest_harness.h is updated.
>>
>> Signed-off-by: Mickaël Salaün <mic@xxxxxxxxxxx>
>> Acked-by: Kees Cook <keescook@xxxxxxxxxxxx>
>> Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
>> Cc: Shuah Khan <shuah@xxxxxxxxxx>
>> Cc: Will Drewry <wad@xxxxxxxxxxxx>
>> ---
>>  tools/testing/selftests/seccomp/Makefile | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/tools/testing/selftests/seccomp/Makefile b/tools/testing/selftests/seccomp/Makefile
>> index 5fa6fd2246b1..aeb0c805f3ca 100644
>> --- a/tools/testing/selftests/seccomp/Makefile
>> +++ b/tools/testing/selftests/seccomp/Makefile
>> @@ -4,3 +4,5 @@ LDFLAGS += -lpthread
>>  
>>  include ../lib.mk
>>  
>> +$(TEST_GEN_PROGS): seccomp_bpf.c ../kselftest_harness.h
>> +	$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
>>
> 
> This change breaks seccomp build:
> 
> make -C tools/testing/selftests/seccomp/
> make: Entering directory '/mnt/data/lkml/linux_4.12/tools/testing/selftests/seccomp'
> make: *** No rule to make target '../kselftest_harness.h', needed by '/mnt/data/lkml/linux_4.12/tools/testing/selftests/seccomp/seccomp_bpf'.  Stop.
> make: Leaving directory '/mnt/data/lkml/linux_4.12/tools/testing/selftests/seccomp'
> shuah@mazurka:/mnt/data/lkml/linux_4.12$ cd tools/testing/selftests/seccomp/
> shuah@mazurka:/mnt/data/lkml/linux_4.12/tools/testing/selftests/seccomp$ make
> make: *** No rule to make target '../kselftest_harness.h', needed by '/mnt/data/lkml/linux_4.12/tools/testing/selftests/seccomp/seccomp_bpf'.  Stop.
> 
> 
> Did you happen to try building with this change?

Yes I did, and it builds fine for me (with the same command and
patches). There is only one warning from GCC with
../kselftest_harness.h:368 because of the trick from OPTIONAL_HANDLER(),
which is intentional (and not modified by my patches).

I don't get why your "make" said that there is "No rule to make target"
../kselftest_harness.h . This file exists (patch 1/7) so there is no
need to create it…
gen_kselftest_tar.sh works fine too.

Thanks,
 Mickaël

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