Re: [PATCH 1/1] selftests: timers: use LDLIBS instead of LDFLAGS to link against libpthread

From	Fathi Boudra <fathi.boudra@linaro.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH 1/1] selftests: timers: use LDLIBS instead of LDFLAGS to link against libpthread
Date	2017-06-28 17:10 +0200
Message-ID	<tXmLo-8q5-35@gated-at.bofh.it> (permalink)
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On 28 June 2017 at 17:41, Shuah Khan <shuah@kernel.org> wrote:
> On 06/28/2017 08:37 AM, Fathi Boudra wrote:
>> On 28 June 2017 at 17:20, Shuah Khan <shuah@kernel.org> wrote:
>>> On 06/28/2017 03:18 AM, Fathi Boudra wrote:
>>>> timers test fails to build due to undefined reference:
>>>>
>>>>  aarch64-linaro-linux-gcc --sysroot=/build/tmp-rpb-glibc/sysroots/hikey
>>>>  -O2 -pipe -g -feliminate-unused-debug-types -O3 -Wl,-no-as-needed -Wall
>>>>  -DKTEST  -Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -lrt -lpthread
>>>>  posix_timers.c
>>>>  -o /build/tmp-rpb-glibc/work/hikey-linaro-linux/kselftests/4.12-r0/linux-4.12-rc7/tools/testing/selftests/timers/posix_timers
>>>>  /tmp/cc1FTZzT.o: In function `check_timer_create':
>>>>  /usr/src/debug/kselftests/4.12-r0/linux-4.12-rc7/tools/testing/selftests/timers/posix_timers.c:157:
>>>>  undefined reference to `timer_create'
>>>>  /usr/src/debug/kselftests/4.12-r0/linux-4.12-rc7/tools/testing/selftests/timers/posix_timers.c:170:
>>>>  undefined reference to `timer_settime'
>>>>  collect2: error: ld returned 1 exit status
>>>>
>>>> Use LDLIBS instead of LDFLAGS to properly link against libpthread and fix
>>>> this build issue.
>>>>
>>>> Signed-off-by: Denys Dmytriyenko <denys@ti.com>
>>>> Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
>>>
>>> I can't reproduce this on linux-kselftest next on x86_64. Is this arm64 speocific
>>> problem? Please try this on linux-kselftest latest.
>>
>> yes, I tried linux-kselftest next and can reproduce.
>> Maybe related to native build vs cross-build?
>> I don't think it's arm64 specific.
>>
>
> Can you confirm that this change doesn't cause problems in native
> build environments.

yes, I tested on x86 in native build environment as well. It builds
and run fine.

I noticed my patchset for LDFLAGS vs LDLIBS changes don't apply
cleanly on linux-kselftest next branch. I'm happy to respin the serie
on top of next branch if you're willing to take them.

> thanks,
> -- Shuah

Cheers,
Fathi

Thread

[PATCH 1/1] selftests: timers: use LDLIBS instead of LDFLAGS to link against libpthread Fathi Boudra <fathi.boudra@linaro.org> - 2017-06-28 11:20 +0200
  Re: [PATCH 1/1] selftests: timers: use LDLIBS instead of LDFLAGS to  link against libpthread Shuah Khan <shuah@kernel.org> - 2017-06-28 16:30 +0200
    Re: [PATCH 1/1] selftests: timers: use LDLIBS instead of LDFLAGS to  link against libpthread Fathi Boudra <fathi.boudra@linaro.org> - 2017-06-28 16:40 +0200
      Re: [PATCH 1/1] selftests: timers: use LDLIBS instead of LDFLAGS to  link against libpthread Shuah Khan <shuah@kernel.org> - 2017-06-28 16:50 +0200
        Re: [PATCH 1/1] selftests: timers: use LDLIBS instead of LDFLAGS to  link against libpthread Fathi Boudra <fathi.boudra@linaro.org> - 2017-06-28 17:10 +0200
          Re: [PATCH 1/1] selftests: timers: use LDLIBS instead of LDFLAGS to  link against libpthread Shuah Khan <shuah@kernel.org> - 2017-06-28 17:20 +0200
            Re: [PATCH 1/1] selftests: timers: use LDLIBS instead of LDFLAGS to  link against libpthread Fathi Boudra <fathi.boudra@linaro.org> - 2017-06-28 18:00 +0200
              Re: [PATCH 1/1] selftests: timers: use LDLIBS instead of LDFLAGS  to link against libpthread Denys Dmytriyenko <denys@ti.com> - 2017-06-28 18:10 +0200

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