Re: Very slow clang kernel config ..

From: Theodore Ts'o
Date: Tue May 04 2021 - 20:58:25 EST

On Wed, May 05, 2021 at 12:02:33AM +0200, Miguel Ojeda wrote:
> On Sun, May 2, 2021 at 11:48 PM Adrian Bunk <bunk@xxxxxxxxxx> wrote:
> >
> > Library packages in ecosystems like Go or Rust are copies of the source
> > code, and when an application package is built with these "libraries"
> > (might even be using LTO) this is expected to be faster than using
> > shared libraries.
> Rust libraries only need to include "copies" for generics; and only
> enough information to use them. Keeping the raw source code would be
> one way of doing that (like C++ header-only libraries), but it is not
> required.
> However, it is true that Rust does not have a stable ABI, that the
> vast majority of Rust open source applications get built from source
> via Cargo and that Cargo does not share artifacts in its cache.

What does this mean for enterprise distributions, like RHEL, which
need to maintain a stable kernel ABI as part of their business model.
I assume it means that they will need to lock down on a specific Rust
compiler and Rust libraries? How painful will it be for them to get
security updates (or have to do backports of security bug fixes) for
7-10 years?

- Ted