[llvm-dev] Incorrect / missing dependencies in llvm build?

[mats petersson via llvm-dev]

I'm sorry, I was trying to work out something else yesterday, and the first
time I thought it was just some general build error that had scrolled past
on the screen above, so thought "make again will show me the error". The
second time, I was just trying to get something done before going to bed
(something I should have done a while ago today too!).

I will definitely make an effort to repro this tomorrow...

--
Mats

On 16 November 2016 at 22:10, Chris Bieneman <beanz at apple.com> wrote:

> A general call here. Anyone who ever sees a compile error of a missing
> tablegen-generated header please email me the error.
>
> These errors are really easy to fix as we find them, but we don’t
> currently have a good way to force trigger them, or to audit the
> dependencies.
>
> I’ve had water cooler conversations around the office with people about
> building a way to detect these failures, but I haven’t yet had a chance to
> build it. I may try and prioritize this so that we can have something
> sooner rather than later.
>
> On the less general note, this thread doesn’t seem to have a specific
> error listed anywhere, does anyone have one handy they can point me at?
>
> -Chris
>
> On Nov 16, 2016, at 12:54 PM, Jonathan Roelofs <jonathan at codesourcery.com>
> wrote:
>
> +cbieneman
>
> Mr. CMake might know how to fix it ;)
>
> Jon
>
> On 11/16/16 1:52 PM, mats petersson wrote:
>
> Thanks, at least I know I'm not imagining or doing something really daft!
> ;)
>
> My cmake skills are near 0%, so not sure I can fix, but perhaps I can at
> least raise a bug? ;)
>
> --
> Mats
>
> On 16 November 2016 at 20:28, Martin J. O'Riordan <
> martin.oriordan at movidius.com> wrote:
>
>> I sometimes see this with a clean build and most often it is
>> 'Attributes.inc' that is missing.  I usually have to 'touch Attributes.td'
>> for this.  But I don't know CMake well enough to know how to fix these
>> issue properly.
>>
>>         MartinO
>>
>> -----Original Message-----
>> From: llvm-dev [mailto:llvm-dev-bounces at lists.llvm.org] On Behalf Of
>> Jonathan Roelofs via llvm-dev
>> Sent: 16 November 2016 20:11
>> To: mats petersson <mats at planetcatfish.com>; llvm-dev <
>> llvm-dev at lists.llvm.org>
>> Subject: Re: [llvm-dev] Incorrect / missing dependencies in llvm build?
>>
>>
>>
>> On 11/16/16 1:05 PM, mats petersson via llvm-dev wrote:
>> > Yesterday, I took latest git version of LLVM, built a makefile using
>> > cmake (had to update from my "old" cmake to a newer one, so picked the
>> > latest 3.7.0), and ran the resulting makefile with `make -j 8`. This
>> > failed with an error, but when I ran make again, it worked fine... My
>> > guess as to the problem is that there's one or more dependency that
>> > isn't made clear to make (or cmake), and when I run make again, it has
>> > built the "previously missing" one.
>> >
>> > I didn't spend much time debugging this, I may have a go tonight, I
>> > just wanted to raise this, in case someone else has seen this and/or
>> > has a solution... I was able to reproduce the problem tho', as I built
>> > llvm twice with different configurations, and it happened both times -
>> > and rerunning make resolved it both times too.
>>
>> Folks on my team have seen this. From their description of the failure,
>> it looked to me like it was a problem with missing dependencies on
>> TableGen-generated headers... but I didn't get enough information to be
>> able to track down exactly which TU was missing the dep, and I haven't been
>> able to reproduce it myself.
>>
>>
>> Jon
>>
>> >
>> > --
>> > Mats
>> >
>> >
>> > _______________________________________________
>> > LLVM Developers mailing list
>> > llvm-dev at lists.llvm.org
>> > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>> >
>>
>> --
>> Jon Roelofs
>> jonathan at codesourcery.com
>> CodeSourcery / Mentor Embedded
>> _______________________________________________
>> LLVM Developers mailing list
>> llvm-dev at lists.llvm.org
>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>
>>
>
> --
> Jon Roelofsjonathan at codesourcery.com
> CodeSourcery / Mentor Embedded
>
>
>
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