Re: [OE-core] [RFC PATCH 1/8] rust: Migrate arch_to_rust_target_arch() to rust-common class

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Tue, 2022-02-22 at 14:22 +1030, Andrew Jeffery wrote:
> This will allow us to use it elsewhere for architecture name
> translation. This move is motivated by powerpc64le support.
> 
> Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
> ---
>  meta/classes/rust-common.bbclass           | 16 ++++++++++++++++
>  meta/recipes-devtools/rust/rust-common.inc | 16 ----------------
>  2 files changed, 16 insertions(+), 16 deletions(-)
> 
> diff --git a/meta/classes/rust-common.bbclass b/meta/classes/rust-common.bbclass
> index 98d65970e8c0..2f2a31867ad0 100644
> --- a/meta/classes/rust-common.bbclass
> +++ b/meta/classes/rust-common.bbclass
> @@ -1,5 +1,21 @@
>  inherit python3native
>  
> +# Convert a normal arch (HOST_ARCH, TARGET_ARCH, BUILD_ARCH, etc) to something
> +# rust's internals won't choke on.
> +def arch_to_rust_target_arch(arch):
> +    if arch == "i586" or arch == "i686":
> +        return "x86"
> +    elif arch == "mipsel":
> +        return "mips"
> +    elif arch == "mip64sel":
> +        return "mips64"
> +    elif arch == "armv7":
> +        return "arm"
> +    elif arch == "powerpc64le":
> +        return "powerpc64"
> +    else:
> +        return arch
> +
>  # Common variables used by all Rust builds
>  export rustlibdir = "${libdir}/rust"
>  FILES:${PN} += "${rustlibdir}/*.so"


If we're moving this, it may be a good candidate to move to a new
meta/lib/oe/rust.py python function library for rust. I appreciate that is
slightly move involved and will likely need the imports in base.bbclass to be
tweaked but is probably the better long term fix.

Cheers,

Richard