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Rollup merge of #126967 - alexcrichton:wasm32-wasip2-tier-2, r=Mark-Simulacrum

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Promote the `wasm32-wasip2` target to Tier 2

This commit promotes the `wasm32-wasip2` Rust target to tier 2 as proposed in rust-lang/compiler-team#760. There are two major changes in this PR:

1. The `dist-various-2` container, which already produces the other WASI targets, now has an extra target added for `wasm32-wasip2`.
2. A new `wasm-component-ld` binary is added to all host toolchains when LLD is enabled. This is the linker used for the `wasm32-wasip2` target.

This new linker is added for all host toolchains to ensure that all host toolchains can produce the `wasm32-wasip2` target. This is similar to how `rust-lld` was originally included for all host toolchains to be able to produce WebAssembly output when the targets were first added. The new linker is developed [here][wasm-component-ld] and is pulled in via a crates.io-based dependency to the tree here.

[wasm-component-ld]: https://github.com/bytecodealliance/wasm-component-ld
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Trevor Gross 2024-07-16 16:15:15 -05:00 • committed by GitHub
commit 4e4fa7eb37
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@ -112,6 +112,7 @@ ENV TARGETS=$TARGETS,wasm32-unknown-unknown
ENV TARGETS=$TARGETS,wasm32-wasi
ENV TARGETS=$TARGETS,wasm32-wasip1
ENV TARGETS=$TARGETS,wasm32-wasip1-threads
ENV TARGETS=$TARGETS,wasm32-wasip2
ENV TARGETS=$TARGETS,sparcv9-sun-solaris
ENV TARGETS=$TARGETS,x86_64-pc-solaris
ENV TARGETS=$TARGETS,x86_64-unknown-linux-gnux32