Re: Rust bootstraps via i686?

[Efraim Flashner]

On Mon, Dec 04, 2017 at 02:56:39PM -0500, Adam Van Ymeren wrote:
> Does anyone know why rust bootstraps itself from the i686 version of the
> binaries even if you're running on x86_64?
> 
> This results in having to download a build a lot of packages to build
> rust on x86_64.
> 
> If I can make it bootstrap though the current system in use would that
> be a useful patch or is there some problem with bootstraping from x86_64
> that I'm unaware of?
> 
> Thanks!
> -Adam
> 

I believe the reason is to decrease the number of language-specific
bootstrap binaries. Since the i686 bootstrap rust is capable of building
for i686 and for x86_64, it means one less binary.

On the other hand, this does nothing for the other architectures which
can't execute i686 code natively.

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