RFC: Add OsUnknown as a target operating system #12841
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First step in supporting bare-metal targets, allows for cfg annotations and ignores dylib crate-type annotations.
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We have recently adopted a new RFC process, and this is a large enough change that I think that it warrants an RFC. You'll need to follow the process described in the email (there are a few example PRs already as well) before submitting changes to this repo. |
This was referenced Jun 17, 2014
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Jul 22, 2022
fix: Fix `trait_impls_in_deps_query` being called directly instead of as a query Fixes the inlay hint performance regression introdcuced by rust-lang/rust-analyzer#12549
bors
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fulfill expectations in `check_partial_eq_without_eq` This is a followup to rust-lang#12804, fixing a similar issue for `derive_partial_eq_without_eq` by using `span_lint_hir_and_then` instead of `span_lint_and_sugg`. Additionally tests for both `#[allow(clippy::derive_partial_eq_without_eq)]` and `#[expect(clippy::derive_partial_eq_without_eq)]` are added. changelog:[`derive_partial_eq_without_eq`]: fulfill expectations
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First step in being able to build libstd against newlib (or other compatible c-library) for embedded targets. This enables a target triple to be specified of the form
*-unknown-*. Next step to getting libstd to build is adding weak linkages or#[cfg(target_os = "unknown")]. Newlib provides libc, libm and libstc++ (exceptions too) and can be ported to other platforms by implementing 17-18 basic functions to interact with the OS/hardware.This pull request just adds the unknown os target to librustc. The only additional change is that it ignores
#[crate-type = "dylib"]in crates (as unknown OS cannot support dynamic linking). If dylib is specified using the--crate-typeflag then an appropriate error is produced.Next steps would be getting libstd to build a rlib, getting a binary to link, and writing a test that makes sure libstd can be built.