[LLVMdev] CMake pools for linking?

[Renato Golin]

Are you building in Debug mode? Buildbots should build in Release+Asserts
mode.

Building LLVM in debug mode crashes even my quad-core i7 16GB RAM laptop,
no wonder an odroid. But that's LD's fault. If you use Gold, everything
works as expected.

Another alternative is using Ninja pools, but we'd need a CMake connection
to generate the Ninja files with the link pools, which I don't think it's
in production yet (there were some implementations on the development
trunk).

cheers,
--renato


On 16 November 2013 23:31, Mikael Lyngvig <mikael at lyngvig.org> wrote:

> Hi,
>
> I've noticed on both PCs and ARM boards that it is the linking process
> that "brings down" the system (makes it swap if it is not equipped with
> plenty of RAM).  So I have been thinking if it would be possible to use the
> CMake pool feature to make the LLVM build system only issue one link
> command at a time - it seems a bit unfortunate that N simultaneous link
> commands are issued when you pretty much know beforehand that the system is
> only likely to be able to serve one link command, if that much, given its
> less-than-optimal-amount of memory.
>
> I just want to hear if this is something that anybody is willing to look
> into - and if it is something that should be looked into at all?  I don't
> think I can figure this out on my own and I think it would be rather easy
> for somebody familiar with CMake.
>
> I notice that there are a lot of low-end machines on the builders list in
> Zorg, so I cannot be the only one who would experience this addition as
> great.
>
>
> Sincerely,
> Mikael Lyngvig
>
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