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Rollup merge of #126662 - alexcrichton:warn-on-wasm32-wasi, r=michaelwoerister
Unconditionally warn on usage of `wasm32-wasi` This commit is a continuation of the work originally proposed in rust-lang/compiler-team#607 and later amended in rust-lang/compiler-team#695. The end goal is to rename `wasm32-wasi` to `wasm32-wasip1` to reflect WASI's development and distinguish the preexisting target from the `wasm32-wasip2` target that WASI is now developing. Work for this transition began in #120468 which landed in Rust 1.78 which became stable on 2024-05-02. This implements the next phase of the transition plan to warn on usage of `wasm32-wasi`. This is intended to help alert users that a removal is pending and all release channels have the replacement available as well. This will reach stable on 2024-09-05. The next stage of the plan is to remove the `wasm32-wasi` target some time in October 2024 which means that the removal will reach stable on 2025-01-09. For reference a full schedule of this transition is listed [here]. Currently this implementation is a simple unconditional warning whenever `rustc --target wasm32-wasi` is invoked. As-implemented there's no way to turn off the warning other than to switch to the `wasm32-wasip1` target. [here]: https://github.com/rust-lang/rust/pull/120468#issuecomment-1977878747
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commit
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@ -1311,6 +1311,20 @@ pub fn build_target_config(early_dcx: &EarlyDiagCtxt, opts: &Options, sysroot: &
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for warning in warnings.warning_messages() {
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early_dcx.early_warn(warning)
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}
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// The `wasm32-wasi` target is being renamed to `wasm32-wasip1` as
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// part of rust-lang/compiler-team#607 and
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// rust-lang/compiler-team#695. Warn unconditionally on usage to
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// raise awareness of the renaming. This code will be deleted in
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// October 2024.
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if opts.target_triple.triple() == "wasm32-wasi" {
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early_dcx.early_warn(
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"the `wasm32-wasi` target is being renamed to \
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`wasm32-wasip1` and the `wasm32-wasi` target will be \
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removed from nightly in October 2024 and removed from \
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stable Rust in January 2025",
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)
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}
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if !matches!(target.pointer_width, 16 | 32 | 64) {
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early_dcx.early_fatal(format!(
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"target specification was invalid: unrecognized target-pointer-width {}",
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