Date: Mon, 29 Aug 2016 11:11:26 -0700 From: Bryan Drewery <bdrewery@FreeBSD.org> To: "Ngie Cooper (yaneurabeya)" <yaneurabeya@gmail.com> Cc: Li-Wen Hsu <lwhsu@FreeBSD.org>, "jenkins-admin@freebsd.org" <jenkins-admin@freebsd.org>, "freebsd-testing@freebsd.org" <freebsd-testing@freebsd.org>, Dimitry Andric <dim@FreeBSD.org> Subject: Re: Jenkins build is still unstable: FreeBSD_HEAD #564 Message-ID: <5daeb282-d39e-d5e3-df81-41ed1eab9026@FreeBSD.org> In-Reply-To: <3B60A57F-778C-4E7C-B081-098C0F6E92D2@gmail.com> References: <1491374121.44.1472440150670.JavaMail.jenkins@jenkins-9.freebsd.org> <166099893.51.1472451061454.JavaMail.jenkins@jenkins-9.freebsd.org> <CAG=rPVdZp171Egp=OHWDc3qCgcJDE3HQ0rv-j=i%2BO1LHcfH%2BJQ@mail.gmail.com> <CFA236ED-7DE0-4BE1-B944-52284E2FB6E0@FreeBSD.org> <6E443BB8-0269-4812-A2F4-40AA303E69C6@FreeBSD.org> <CAG=rPVdfgoF0mts-edHATUaefD7YuGtNu5ZTJOa8efUn2W4QuA@mail.gmail.com> <8058052E-A09A-403E-828A-74B51ED4BBF4@FreeBSD.org> <20160829163911.GA51650@FreeBSD.cs.nctu.edu.tw> <E73154DF-6A88-457D-B1FF-6B7F7610C37F@FreeBSD.org> <4b8980f0-1a90-40d7-45b3-9569b321d1c6@FreeBSD.org> <20160829175247.GA10263@FreeBSD.cs.nctu.edu.tw> <CAA41D00-2451-42EC-B9FD-3E31F42F9CF6@gmail.com> <31f11ba3-ca29-0f85-f1c1-6a3cd467bb57@FreeBSD.org> <67E84707-3267-49F3-8DB6-13CBD05B1690@gmail.com> <B014DD06-4BB2-4503-8908-C78EFEE0FCA2@gmail.com> <3B60A57F-778C-4E7C-B081-098C0F6E92D2@gmail.com>
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From: Bryan Drewery <bdrewery@FreeBSD.org>
To: "Ngie Cooper (yaneurabeya)" <yaneurabeya@gmail.com>
Cc: Li-Wen Hsu <lwhsu@FreeBSD.org>,
"jenkins-admin@freebsd.org" <jenkins-admin@freebsd.org>,
"freebsd-testing@freebsd.org" <freebsd-testing@freebsd.org>,
Dimitry Andric <dim@FreeBSD.org>
Message-ID: <5daeb282-d39e-d5e3-df81-41ed1eab9026@FreeBSD.org>
Subject: Re: Jenkins build is still unstable: FreeBSD_HEAD #564
References: <1491374121.44.1472440150670.JavaMail.jenkins@jenkins-9.freebsd.org>
<166099893.51.1472451061454.JavaMail.jenkins@jenkins-9.freebsd.org>
<CAG=rPVdZp171Egp=OHWDc3qCgcJDE3HQ0rv-j=i+O1LHcfH+JQ@mail.gmail.com>
<CFA236ED-7DE0-4BE1-B944-52284E2FB6E0@FreeBSD.org>
<6E443BB8-0269-4812-A2F4-40AA303E69C6@FreeBSD.org>
<CAG=rPVdfgoF0mts-edHATUaefD7YuGtNu5ZTJOa8efUn2W4QuA@mail.gmail.com>
<8058052E-A09A-403E-828A-74B51ED4BBF4@FreeBSD.org>
<20160829163911.GA51650@FreeBSD.cs.nctu.edu.tw>
<E73154DF-6A88-457D-B1FF-6B7F7610C37F@FreeBSD.org>
<4b8980f0-1a90-40d7-45b3-9569b321d1c6@FreeBSD.org>
<20160829175247.GA10263@FreeBSD.cs.nctu.edu.tw>
<CAA41D00-2451-42EC-B9FD-3E31F42F9CF6@gmail.com>
<31f11ba3-ca29-0f85-f1c1-6a3cd467bb57@FreeBSD.org>
<67E84707-3267-49F3-8DB6-13CBD05B1690@gmail.com>
<B014DD06-4BB2-4503-8908-C78EFEE0FCA2@gmail.com>
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In-Reply-To: <3B60A57F-778C-4E7C-B081-098C0F6E92D2@gmail.com>
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On 8/29/2016 11:10 AM, Ngie Cooper (yaneurabeya) wrote:
>=20
>> On Aug 29, 2016, at 11:04, Ngie Cooper (yaneurabeya) <yaneurabeya@gmai=
l.com> wrote:
>>
>>>
>>> On Aug 29, 2016, at 11:02, Ngie Cooper (yaneurabeya) <yaneurabeya@gma=
il.com> wrote:
>>>
>>>>
>>>> On Aug 29, 2016, at 11:00, Bryan Drewery <bdrewery@FreeBSD.org> wrot=
e:
>>>>
>>>> On 8/29/2016 10:58 AM, Ngie Cooper (yaneurabeya) wrote:
>>>>> (-bdrewery)
>>>>>
>>>>>> On Aug 29, 2016, at 10:52, Li-Wen Hsu <lwhsu@FreeBSD.org> wrote:
>>>>>>
>>>>>> I guess the quickest way is boot that VM, cd to
>>>>>> /usr/tests/lib/atf/libatf-c++ and run `kyua test atf_c++_test`
>>>>>> However I am not sure this provides enough information because stu=
ff
>>>>>> under /usr/tests/lib/atf/libatf-c++ are all binary files.
>>>>>>
>>>>>> FWIW, I would like to know, should these -target, --sysroot and -B=
flages be
>>>>>> given when compiling a normal program in a normal time? In this t=
est
>>>>>> case, kyua just wanted to compile test.cpp which includes sstream,=
it's
>>>>>> not during buildworld/buildkernel time, so files under /usr/obj
>>>>>> should not be used.
>>>>>
>>>>> I=E2=80=99m actively working on this right now. If I can=E2=80=99t =
resolve it soon, I=E2=80=99ll file a bug, mark it as an expected failure,=
and we can work on fixing the issue with a bit more leisure.
>>>>>
>>>>> It=E2=80=99s not a cross-compiler problem =E2=80=94 something chang=
ed recently (likely in clang/libc++) that=E2=80=99s causing this problem,=
and it might just be an existing bug that was triggered by that change..=
>>>>>
>>>>
>>>> What changed recently is that buildworld now always uses --sysroot f=
or
>>>> Clang, and --sysroot,-isystem,-B,-L for GCC.
>>>
>>> Ok. I=E2=80=99m not fully convinced that that=E2=80=99s the problem y=
et. Will drill down into the issue in the next half hour and will post a =
bug with my findings.
>>
>> Oh wait. Damn=E2=80=A6 I see the --sysroot line in the compilation out=
put from the test. Crap=E2=80=A6 that=E2=80=99s not going to work.
>=20
> Ok, found a likely culprit: lib/clang/include/clang/Config/config.h. D=
EFAULT_SYSROOT=E2=80=99s probably being stored in the compiler, somehow=E2=
=80=A6
> Cheers,
> -Ngie
>=20
> 24 /* Default <path> to all compiler invocations for --sysroot=3D<path>=
=2E */
> 25 /* #undef DEFAULT_SYSROOT */
>=20
> $ grep -r DEFAULT_SYSROOT lib/clang/
> lib/clang/include/clang/Config/config.h:/* #undef DEFAULT_SYSROOT */
> lib/clang/clang.build.mk: -DDEFAULT_SYSROOT=3D\"${TOOLS_P=
REFIX}\=E2=80=9D
> $ cc -print-search-dirs
> programs: =3D/usr/bin
> libraries: =3D/usr/bin/../lib/clang/3.8.0:/usr/lib
>=20
No, that's only used for the bootstrap compiler. The target compiler
doesn't get it. None of that logic changed.
--=20
Regards,
Bryan Drewery
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