llvm dev - Aug 2014 - [LLVMdev] [3.5 Release] Release Candidate 3 Now Available

See http://llvm.org/PR19289 for lots of details. It had already been
reported before but I had missed it and so had most others. =[

I'm pretty sure this breaks every 32-bit debian based Linux distro. I've
asked David Majnemer to try to confirm or refute that. If it does impact
every 32-bit debian based Linux distro, I think this should be a release
blocker sad as I am to say it. CC-ing Richard, Doug, etc. Have I mentioned
how much I hate the header search logic for GCC? =/

In good news, the fix was reasonably simple and I've already committed it
here: r216531

It has zero impact outside of Linux and outside of the Clang driver. I've
asked several folks to test it as much as they can of course. Let me know
what if anything else I can do.


On Tue, Aug 26, 2014 at 2:53 PM, Chandler Carruth <chandlerc at
google.com>
wrote:
> Very sadly, someone just pointed out that the latest Ubuntu and Debian
> installations of certain multiarch/cross-compiling GCCs are incompatible
> with Clang's driver.
>
> I'm working on a fix now...
>
>
> On Thu, Aug 21, 2014 at 10:55 AM, Bill Wendling <isanbard at
gmail.com>
> wrote:
>
>> The third 3.5 release candidate is now available. Please pick up
sources
>> and binaries here:
>>
>>         https://llvm.org/pre-release/3.5
>>
>> Run it through its phases and report any bugs you find!
>>
>> Share and enjoy!
>> -bw
>> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>
>
>
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Just FYI, I confirmed with Sylvestre that they've been carrying a patch in
order to build working debian packages for 32-bit platforms:

http://anonscm.debian.org/viewvc/pkg-llvm/llvm-toolchain/branches/3.5/debian/patches/libstdc%2B%2B-header-i386.diff?revision=1282&view=markup

I've asked him to test out whether this is still needed, but I strongly
suspect that this is trying to cope with the same fundamental bug. It means
that the source packages for 3.5 or non '.deb' binary packages will fail
to
work on any modern debian or ubuntu 32-bit distro without r216531. =[




On Wed, Aug 27, 2014 at 1:57 AM, Chandler Carruth <chandlerc at
google.com>
wrote:
> See http://llvm.org/PR19289 for lots of details. It had already been
> reported before but I had missed it and so had most others. =[
>
> I'm pretty sure this breaks every 32-bit debian based Linux distro.
I've
> asked David Majnemer to try to confirm or refute that. If it does impact
> every 32-bit debian based Linux distro, I think this should be a release
> blocker sad as I am to say it. CC-ing Richard, Doug, etc. Have I mentioned
> how much I hate the header search logic for GCC? =/
>
> In good news, the fix was reasonably simple and I've already committed
it
> here: r216531
>
> It has zero impact outside of Linux and outside of the Clang driver.
I've
> asked several folks to test it as much as they can of course. Let me know
> what if anything else I can do.
>
>
> On Tue, Aug 26, 2014 at 2:53 PM, Chandler Carruth <chandlerc at
google.com>
> wrote:
>
>> Very sadly, someone just pointed out that the latest Ubuntu and Debian
>> installations of certain multiarch/cross-compiling GCCs are
incompatible
>> with Clang's driver.
>>
>> I'm working on a fix now...
>>
>>
>> On Thu, Aug 21, 2014 at 10:55 AM, Bill Wendling <isanbard at
gmail.com>
>> wrote:
>>
>>> The third 3.5 release candidate is now available. Please pick up
sources
>>> and binaries here:
>>>
>>>         https://llvm.org/pre-release/3.5
>>>
>>> Run it through its phases and report any bugs you find!
>>>
>>> Share and enjoy!
>>> -bw
>>> _______________________________________________
>>> LLVM Developers mailing list
>>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>>
>>
>>
>
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(and if anyone wants to cherrypick this change, you want r216572 as well
which fixes a think-o in the original...)


On Wed, Aug 27, 2014 at 3:24 AM, Chandler Carruth <chandlerc at
google.com>
wrote:
> Just FYI, I confirmed with Sylvestre that they've been carrying a patch
in
> order to build working debian packages for 32-bit platforms:
>
>
>
http://anonscm.debian.org/viewvc/pkg-llvm/llvm-toolchain/branches/3.5/debian/patches/libstdc%2B%2B-header-i386.diff?revision=1282&view=markup
>
> I've asked him to test out whether this is still needed, but I strongly
> suspect that this is trying to cope with the same fundamental bug. It means
> that the source packages for 3.5 or non '.deb' binary packages will
fail to
> work on any modern debian or ubuntu 32-bit distro without r216531. =[
>
>
>
>
> On Wed, Aug 27, 2014 at 1:57 AM, Chandler Carruth <chandlerc at
google.com>
> wrote:
>
>> See http://llvm.org/PR19289 for lots of details. It had already been
>> reported before but I had missed it and so had most others. =[
>>
>> I'm pretty sure this breaks every 32-bit debian based Linux distro.
I've
>> asked David Majnemer to try to confirm or refute that. If it does
impact
>> every 32-bit debian based Linux distro, I think this should be a
release
>> blocker sad as I am to say it. CC-ing Richard, Doug, etc. Have I
mentioned
>> how much I hate the header search logic for GCC? =/
>>
>> In good news, the fix was reasonably simple and I've already
committed it
>> here: r216531
>>
>> It has zero impact outside of Linux and outside of the Clang driver.
I've
>> asked several folks to test it as much as they can of course. Let me
know
>> what if anything else I can do.
>>
>>
>> On Tue, Aug 26, 2014 at 2:53 PM, Chandler Carruth <chandlerc at
google.com>
>> wrote:
>>
>>> Very sadly, someone just pointed out that the latest Ubuntu and
Debian
>>> installations of certain multiarch/cross-compiling GCCs are
incompatible
>>> with Clang's driver.
>>>
>>> I'm working on a fix now...
>>>
>>>
>>> On Thu, Aug 21, 2014 at 10:55 AM, Bill Wendling <isanbard at
gmail.com>
>>> wrote:
>>>
>>>> The third 3.5 release candidate is now available. Please pick
up
>>>> sources and binaries here:
>>>>
>>>>         https://llvm.org/pre-release/3.5
>>>>
>>>> Run it through its phases and report any bugs you find!
>>>>
>>>> Share and enjoy!
>>>> -bw
>>>> _______________________________________________
>>>> LLVM Developers mailing list
>>>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>>>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>>>>
>>>
>>>
>>
>
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On 27 August 2014 11:24, Chandler Carruth <chandlerc at google.com>
wrote:
> I've asked him to test out whether this is still needed, but I strongly
> suspect that this is trying to cope with the same fundamental bug. It means
> that the source packages for 3.5 or non '.deb' binary packages will
fail to
> work on any modern debian or ubuntu 32-bit distro without r216531. =[
This looks serious, should we try an RC4?

--renato