linux-kernel - Re: how can we test the hexagon port in mainline

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Date:   Wed, 23 Jun 2021 17:10:53 +0200
From:   'Christoph Hellwig' <hch@....de>
To:     Brian Cain <bcain@...eaurora.org>
Cc:     'Christoph Hellwig' <hch@....de>, 'Arnd Bergmann' <arnd@...db.de>,
        'Linus Torvalds' <torvalds@...ux-foundation.org>,
        'Sid Manning' <sidneym@...eaurora.org>,
        linux-hexagon@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: how can we test the hexagon port in mainline

On Wed, Jun 23, 2021 at 09:39:21AM -0500, Brian Cain wrote:
> > -----Original Message-----
> > From: Christoph Hellwig <hch@....de>
> ...
> > 
> > Hi all,
> > 
> > the oldest supported gcc version in mainline is gcc 4.9.  But the only
> > hexagon crosscompiler I can find is the one Arnds website points to here:
> > 
> > https://mirrors.edge.kernel.org/pub/tools/crosstool/
> > 
> > which is a non-upstream gcc 4.6.1 port.  How are we supposed to even
> > build test hexagon code?
> 
> We have provided a clang-12-based toolchain here:
> 
> https://codelinaro.jfrog.io/artifactory/codelinaro-qemu/2021-05-12/clang+llv
> m-12.0.0-cross-hexagon-unknown-linux-musl.tar.xz

Do you have something that is just a small compiler like Arnd's gcc
build?  That tarball is already 264MB with xz compression, which does
not compare very favorablt to the 7MB for gcc.  And I fear I don't
really have space for that on my setups..