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From Matt Youill <matt.you...@airmettle.com>
Subject Re: LLVM
Date Wed, 31 Mar 2021 05:32:57 GMT
Yes, that's the one, not the compiler I'm compiling with.

An option to override would be good. Maybe I'll just do a sneaky patch 
for the time being :D

On 31/3/21 4:12 pm, Sutou Kouhei wrote:
> Hi,
>
> In <205432f7-fda5-ce5f-beba-bfe3424af22d@airmettle.com>
>    "LLVM" on Wed, 31 Mar 2021 12:21:17 +1100,
>    Matt Youill <matt.youill@airmettle.com> wrote:
>
>> Is it possible to override the version of LLVM that arrow uses during
>> a build? Seems to always pick the latest version it finds.
> You want to specify LLVM version used by Gandiva, right?
>
> If it's right, you can't do it for now. We have LLVM version
> list as ARROW_LLVM_VERSIONS in cpp/CMakeLists.txt. We can
> change detection order by changing the list but we don't
> provide build option to do it.
>
>
> We can improve the current behavior by adding a new build
> option such as ARROW_LLVM_VERSION into
> cpp/cmake_modules/DefineOptions.cmake and using it as the
> desired LLVM version.
>
>
> Thanks,
> --
> kou
>

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