Revert "Add initial support for hppa-unknown-linux-gnu"

[JohnTitor]

Reverts #3539
This target doesn't exist on rustc yet.

[rustbot]

@JohnTitor: no appropriate reviewer found, use r? to override

[hdeller]

Reverts #3539 This target doesn't exist on rustc yet.

Yes, sorry. We will fix that. I didn't know that you test all cases, and as I said in the initial pull request it's somehow a chicken/egg problem.
Thanks anyway for your initial acceptance so far !!!!!

[antoyo]

@hdeller: Thanks for your work.

I was wondering what's the plan here? Do we have a PR to add HPPA on rust-lang/rust?
What is blocking you? Is there anything that would help unblock you?

[hdeller]

Hallo @antoyo,
I'm currently busy with work on qemu and Linux kernel for hppa, so I haven't had any time for rust-lang/rust yet.
So, what's blocking me is purely time. Do you have interest to add this for hppa? Machines/access/help is no problem.

[antoyo]

No, I was just checking if there was anything blocking you and if I could help unblock it.

[thesamesam]

Can someone explain how we actually add HPPA support to rust-lang/rust? Is there an example somewhere?

I was under the impression (hopefully wrongly) that it required LLVM support or for it to be a "proper" target. Is there any precedence for a rustc_codegen-only target getting support in rust-lang/rust? Thanks.

[riking]

@thesamesam You can propose it as a Tier 3 target, and in the target specification the target can declare that it requires the "gcc" codegen backend.

[thesamesam]

@riking Thank you!