Re: [RFC PATCH v3 2/5] rust: add bindgen step as a meson dependency

[Richard Henderson <richard.henderson@linaro.org>]

On 6/19/24 13:13, Manos Pitsidianakis wrote:
> +# FIXME: These are the latest stable versions, refine to actual minimum ones.
> +msrv = {
> +  'rustc': '1.79.0',
> +  'cargo': '1.79.0',
> +  'bindgen': '0.69.4',
> +}

A note for other rust newbies:

These versions are pretty darn close to actual minima.  Ubuntu 24.04 packages rust 1.77, 
which does not support (but has a warning reserving syntax for)

> +    println!("cargo::rerun-if-env-changed=MESON_BUILD_DIR");

Since even the newest distros will not have current enough rust versions, we must rely on 
'rustup'.  This may be available even on older distros; for instance Ubuntu 22.04 has 
rustup via 'snap'.

I think this is good enough for rust development within qemu, but it may require that the 
configure switch be opt-in: default no rather than default auto.


r~