[rust-dev] [ANN] Rust Cross Support for PNaCl

Richard Diamond wichard at vitalitystudios.com
Thu Jul 31 17:32:48 PDT 2014


Yes, but currently only when target_os = "nacl", ie when one has targeted
le32-unknown-nacl (otherwise it's just a matter of using --cfg
"target_libc=\"newlib\""). I should note however, libuv is for the most
part unable to use Newlib (last time I tried, it was a mess, even after
much effort on my part to remove uses of glibc only functions). In fact, it
is this reason libuv is disabled for PNaCl.

Richard Diamond


On Thu, Jul 31, 2014 at 7:23 PM, Brian Anderson <banderson at mozilla.com>
wrote:

>  Neat!
>
> I'm particularly interested that you've ported Rust to newlib, which helps
> Rust with [this issue](https://github.com/rust-lang/rust/issues/7283). Do
> you have a complete working standard library that builds against newlib and
> not glibc?
>
>
> On 07/31/2014 05:15 PM, Richard Diamond wrote:
>
>  Ladies and Gentlemen,
>
>  I am pleased to announce WIP-level cross support for le32-unknown-nacl
> targets, including x86_64-unknown-nacl (ie translated PNaCl modules). I say
> WIP because of a half-dozen number of caveats arising from either bugs in
> LLVM (though only w.r.t. PNaCl/NaCl; ie (x86_64|i686)-linux-gnu is
> unaffected relative to rust proper), restrictions of Pepper plugins, or
> idiosyncrasies of Newlib. Nonetheless, I've reached a MVP state and thus it
> is ready to be toyed with by the more courageous among you. PRs are welcome!
>
>  Given the needed changes to LLVM and the addition of an extra dep
> (nacl-binutils), this fork is unlikely to be upstreamed. I'm not opposed in
> any way to upstreaming, however.
>
>  The fork is located here <https://github.com/DiamondLovesYou/rust>. If
> you're curious as to what doesn't work, checkout the issue board.
> Rust bindings to parts of the Pepper API are located here
> <https://github.com/DiamondLovesYou/rust-ppapi> (also a WIP).
> A simple "Hello, world!" is located here
> <https://github.com/DiamondLovesYou/rust-pnacl-hello-world>.
>
>  Regards,
>  Richard Diamond
>
>
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