support target specific optimized-compiler-builtins
#135326
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Signed-off-by: onur-ozkan <[email protected]>
Signed-off-by: onur-ozkan <[email protected]>
Signed-off-by: onur-ozkan <[email protected]>
Signed-off-by: onur-ozkan <[email protected]>
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This PR modifies If appropriate, please update This PR modifies If appropriate, please update |
Signed-off-by: onur-ozkan <[email protected]>
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Jan 11, 2025
Rollup of 6 pull requests Successful merges: - rust-lang#134074 (bootstrap: `std::io::ErrorKind::CrossesDevices` is finally stable) - rust-lang#135236 (Update a bunch of library types for MCP807) - rust-lang#135301 (re-add a warning for old master branch, but with much simpler logic) - rust-lang#135324 (Initial fs module for uefi) - rust-lang#135326 (support target specific `optimized-compiler-builtins`) - rust-lang#135347 (Use `NonNull::without_provenance` within the standard library) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#135326 - onur-ozkan:target-specific-compiler-builtins, r=jieyouxu support target specific `optimized-compiler-builtins` Makes it possible to control `optimized-compiler-builtins` for per target. This was raised in the [zulip discussion](https://rust-lang.zulipchat.com/#narrow/channel/326414-t-infra.2Fbootstrap/topic/Building.20and.20packaging.20Rust.20with.20x86_64-unknown-uefi.20support/near/492765883) yesterday.
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Apr 27, 2025
Enable support for compiling for UEFI targets. This includes compiling binaries such as bootloaders, stubs for EFI bundles and similar utilities. Specifically, I used this functionality to finish work a minimal EFI stub, candyboot: https://git.sr.ht/~whynothugo/candyboot The UEFI target is only supported by LLVM. GCC cannot produce native EFI binaries. When compiling for a UEFI target, GCC produces ELF binaries and uses GNU-EFI as a stub loader to run them inside EFI environments. This approach does not work when compiling Rust. The profiler_builtins crate fails to build for the UEFI target; it is a C component which requires a UEFI specific sysroot to compile. During coordination with upstream, it came up these compiler built-ins could not be disabled on a per-target basis. This is now implemented upstream, and available in Rust stable since 1.86.0. See: rust-lang/rust#135326
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Makes it possible to control
optimized-compiler-builtinsfor per target.This was raised in the zulip discussion yesterday.