Sam James <[email protected]> writes:

> See the dev-lang/rust commit message for most of the details. This
> works well enough to build packages like sys-apps/ripgrep. It doesn't
> yet build Firefox or pkgcraft (bugs filed upstream already).
>
> The reason I'm sending this series is for the new USE_EXPAND called
> RUST_SUPPORTED_CODEGEN_BACKENDS. This is needed to:

This should be 'RUST_CODEGEN_BACKENDS'. _SUPPORTED_ is what ebuilds can
set to select which ones they work with (default is all).

> a) control what dev-lang/rust builds, and
> b) allow ebuilds to indicate if they don't work with a certain backend.
>
> All of this is for dev-lang/rust but with gcc on the back via libgccjit,
> it is not the same as gccrs (sys-devel/gcc[rust]) which is a fullblown
> Rust FE.
>
> This series is available as a PR at 
> https://github.com/gentoo/gentoo/pull/44347.
>
> Bug: https://bugs.gentoo.org/965182
>
> Sam James (3):
>   dev-lang/rust: support rustc_codegen_gcc (alternative codegen backend)
>   rust.eclass: add RUST_SUPPORTED_CODEGEN_BACKENDS
>   toolchain.eclass: needs LLVM codegen backend for Rust for now
>
>  dev-lang/rust/Manifest                        |   1 +
>  .../files/rustc_codegen_gcc-avoid-oom.patch   | 176 +++++++++++++
>  .../rust/files/rustc_codegen_gcc-dist.patch   | 236 ++++++++++++++++++
>  ...degen_gcc-include-lib-path-bootstrap.patch | 108 ++++++++
>  dev-lang/rust/rust-1.91.0.ebuild              | 119 +++++++--
>  dev-lang/rust/rust-9999.ebuild                | 121 +++++++--
>  eclass/rust.eclass                            |  19 ++
>  eclass/toolchain.eclass                       |   2 +
>  profiles/base/make.defaults                   |   2 +-
>  profiles/base/package.use.force               |   4 +
>  profiles/base/package.use.mask                |   5 +
>  .../desc/rust_codegen_backends.desc           |   7 +-
>  profiles/desc/rust_sysroots.desc              |   2 +-
>  13 files changed, 764 insertions(+), 38 deletions(-)
>  create mode 100644 dev-lang/rust/files/rustc_codegen_gcc-avoid-oom.patch
>  create mode 100644 dev-lang/rust/files/rustc_codegen_gcc-dist.patch
>  create mode 100644 
> dev-lang/rust/files/rustc_codegen_gcc-include-lib-path-bootstrap.patch
>  copy acct-group/clock/clock-0.ebuild => 
> profiles/desc/rust_codegen_backends.desc (51%)

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