build std for sparc64-unknown-linux-gnu

[japaric]

r? @alexcrichton

panicking / unwinding is broken (#39646) but with std available at least people
will be able to debug that issue on real hardware

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @alexcrichton (or someone else) soon.

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[alexcrichton]

Can you also update src/tools/build-manifest to include this target? Otherwise looks great!

[japaric]

@alexcrichton Like so?

[alexcrichton]

I believe so!

@bors: r+

[bors]

📌 Commit 4997178 has been approved by alexcrichton

[sunnystormy]

Don't mean to necro this, but if I were to use the Nightly version of Rust, would I have access to this feature? Also, how soon will this make it over to Stable?

Thanks!

[alexcrichton]

@sunnystormy you can access this right now via:

rustup target add sparc64-unknown-linux-gnu --toolchain nightly

[sunnystormy]

@alexcrichton Thank you, sir! Works like a charm. 😸