Message-ID: <2a1589a885d5f7e81609ed43dee892555379aff6.camel@cogitri.dev>
Subject: Re: rust triples (WAS: Re: Planning for 3.12 feature freeze)
From: Rasmus Thomsen <oss@cogitri.dev>
To: Natanael Copa <ncopa@alpinelinux.org>, Shiz <hi@shiz.me>
Cc: Jean-Louis Fuchs <jean-louis.fuchs@adfinis-sygroup.ch>, 
	"~alpine/devel@lists.alpinelinux.org"
	 <~alpine/devel@lists.alpinelinux.org>
Date: Fri, 03 Apr 2020 17:19:22 +0200
In-Reply-To: <20200403171727.7e4bb42b@ncopa-desktop.copa.dup.pw>
References: <kcEE.jwTbMwvuQKKkHR3apIGq6Q.gNaPvrAJ1gE@srsyg17.sygroup-int.ch>
	 <280DD35B-697F-41E2-89E7-7235690B8DD4@shiz.me>
	 <20200403171727.7e4bb42b@ncopa-desktop.copa.dup.pw>
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On Fri, 2020-04-03 at 17:17 +0200, Natanael Copa wrote:
> On Fri, 3 Apr 2020 15:32:18 +0200
> Shiz <hi@shiz.me> wrote:
> 
> > I propose we move to $arch-alpine-linux-musl everywhere and fix any
> > outstanding issues with it. I can help if needed.
> 
> I think this would be the cleanest thing to do, however, I don't have
> much experience with rust, so help would be appreciated.
> 
> I tried to build it on armv7 as a test:
> 
> diff --git a/community/rust/APKBUILD b/community/rust/APKBUILD
> index bcde30fbd3..3941803500 100644
> --- a/community/rust/APKBUILD
> +++ b/community/rust/APKBUILD
> @@ -7,7 +7,7 @@ pkgname=rust
>  pkgver=1.42.0
>  _llvmver=10
>  _bootver=1.41.1
> -pkgrel=1
> +pkgrel=2
>  pkgdesc="The Rust Programming Language"
>  url="https://www.rust-lang.org"
>  arch="x86_64 armv7 armhf aarch64 x86 ppc64le"
> @@ -88,10 +88,10 @@ case "$CARCH" in
>                 _build="i686-unknown-linux-musl"
>                 _target="$_build"
>                 ;;
> -       armv7)
> -               _build="armv7-unknown-linux-musleabihf"
> -               _target="$_build"
> -               ;;
> +#      armv7)
> +#              _build="armv7-unknown-linux-musleabihf"
> +#              _target="$_build"
> +#              ;;
>         armhf)
>                 _build="arm-unknown-linux-musleabihf"
>                 _target="$_build"
> 
> It manages to build but during `abuild rootpkg` it fails. Apparently
> due to it needs uses cargo, but the installed cargo does not have an
> installed stdlib:
> 
>    Compiling quote v0.6.12
> error[E0461]: couldn't find crate `core` with expected target triple
> armv7-alpine-linux-musleabihf
>   |
>   = note: the following crate versions were found:
>           crate `core`, target triple armv7-unknown-linux-musleabihf: 
> /usr/lib/rustlib/armv7-unknown-linux-musleabihf/lib/libcore-
> 522d58512672202f.rlib
> 
> error[E0461]: couldn't find crate `core` with expected target triple
> armv7-alpine-linux-musleabihf
>   |
>   = note: the following crate versions were found:
>           crate `core`, target triple armv7-unknown-linux-musleabihf:
>           /usr/lib/rustlib/armv7-unknown-linux-
> musleabihf/lib/libcore-522d58512672202f.rlib
> 
> Is there a way to make cargo look into another directory? Or is it
> better to manually create bootstrap packages?
> 
> -nc
> 

When you're switching triplets you would have to only adjust _target in
the first run since you're still building with the old triplet.