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

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Date:   Mon, 5 Jun 2017 12:17:08 -0600
From:   Shuah Khan <shuah@...nel.org>
To:     Mickaël Salaün <mic@...ikod.net>,
        linux-kernel@...r.kernel.org
Cc:     Andy Lutomirski <luto@...capital.net>,
        Jonathan Corbet <corbet@....net>,
        Kees Cook <keescook@...omium.org>,
        Will Drewry <wad@...omium.org>, linux-doc@...r.kernel.org,
        linux-kselftest@...r.kernel.org,
        Shuah Khan <shuahkh@....samsung.com>,
        Shuah Khan <shuah@...nel.org>
Subject: Re: [PATCH v5 3/7] selftests/seccomp: Force rebuild according to
 dependencies

Hi Mickaël,

On 06/03/2017 05:13 AM, Mickaël Salaün wrote:
> 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@...ikod.net>
>>> Acked-by: Kees Cook <keescook@...omium.org>
>>> Cc: Andy Lutomirski <luto@...capital.net>
>>> Cc: Shuah Khan <shuah@...nel.org>
>>> Cc: Will Drewry <wad@...omium.org>
>>> ---
>>>  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 $@
>>>
>>
>> This change breaks seccomp build:
>>
>> make -C tools/testing/selftests/seccomp/
>> make: Entering directory '/mnt/data/lkml/linux_4.12/tools/testing/selftests/seccomp'
>> make: *** No rule to make target '../kselftest_harness.h', needed by '/mnt/data/lkml/linux_4.12/tools/testing/selftests/seccomp/seccomp_bpf'.  Stop.
>> make: Leaving directory '/mnt/data/lkml/linux_4.12/tools/testing/selftests/seccomp'
>> shuah@...urka:/mnt/data/lkml/linux_4.12$ cd tools/testing/selftests/seccomp/
>> shuah@...urka:/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.
> 

I think I know what's going on here. It is my bad. Never mind, we are good.
I will apply this patch to linux-kselftest next.

thanks,
-- Shuah




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