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

[Jonathan Roelofs via llvm-dev]

+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 <mailto: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
>     <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
>     <mailto:mats at planetcatfish.com>>; llvm-dev
>     <llvm-dev at lists.llvm.org <mailto: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
>     >
>     >
>     > _______________________________________________
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>     >
>
>     --
>     Jon Roelofs
>     jonathan at codesourcery.com <mailto:jonathan at codesourcery.com>
>     CodeSourcery / Mentor Embedded
>     _______________________________________________
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>
>

-- 
Jon Roelofs
jonathan at codesourcery.com
CodeSourcery / Mentor Embedded

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