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Rollup merge of #126662 - alexcrichton:warn-on-wasm32-wasi, r=michaelwoerister

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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
This commit is contained in:
León Orell Valerian Liehr 2024-06-19 13:04:59 +02:00 committed by GitHub
commit ca61d7470a
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14
compiler/rustc_session/src/config.rs
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@ -1311,6 +1311,20 @@ pub fn build_target_config(early_dcx: &EarlyDiagCtxt, opts: &Options, sysroot: &
for warning in warnings.warning_messages() { for warning in warnings.warning_messages() {
early_dcx.early_warn(warning) early_dcx.early_warn(warning)
} }
// The `wasm32-wasi` target is being renamed to `wasm32-wasip1` as
// part of rust-lang/compiler-team#607 and
// rust-lang/compiler-team#695. Warn unconditionally on usage to
// raise awareness of the renaming. This code will be deleted in
// October 2024.
if opts.target_triple.triple() == "wasm32-wasi" {
early_dcx.early_warn(
"the `wasm32-wasi` target is being renamed to \
`wasm32-wasip1` and the `wasm32-wasi` target will be \
removed from nightly in October 2024 and removed from \
stable Rust in January 2025",
)
}
if !matches!(target.pointer_width, 16 | 32 | 64) { if !matches!(target.pointer_width, 16 | 32 | 64) {
early_dcx.early_fatal(format!( early_dcx.early_fatal(format!(
"target specification was invalid: unrecognized target-pointer-width {}", "target specification was invalid: unrecognized target-pointer-width {}",