[PATCH] build: Check for cargo when building rust language

[Arthur Cohen]

Morning all,

On 4/9/24 09:47, John Paul Adrian Glaubitz wrote:
> Hello,
> 
> On Mon, 2024-04-08 at 18:33 +0200, pierre-emmanuel.patry@embecosm.com wrote:
>> The rust frontend requires cargo to build some of it's components,
>> it's presence was not checked during configuration.
> 
> Isn't this creating a hen-and-egg problem? How am I supposed to build a Rust
> compiler for a target which is not supported by rustc (yet) when gccrs is
> supposed to build-depend on cargo which requires rustc?
> 
> Adrian
> 

Quick reminder in case you haven't seen our Request for Comments on the 
main ML that this is only a temporary solution. Once gccrs can compile 
its dependencies, we'll go through a more "classical" bootstrapping chain.

rustc_codegen_gcc can probably already be used for building these 
dependencies however, if you'd like to have a look at that.

Kindly,

Arthur