Rust on FreeBSD

lang/rust

• lang/rust-nightly currently only compiles on 10+ amd64
• lang/rust currently only compiles on 10+ amd64 and i386
• Requires a boostrapped “stage0” compiler (available upstream)

• Only 10.1 amd64 supports segmented stacks, which were previously? required for rust.
  • Apparently segmented stacks can now be disabled via morestack: false (Example)
• It's still desirable to add segmented stack support, but it requires kernel changes
  • Go back as far as we can in stable/X

• Get the new Rust FreeBSD buildbots live
• Build using system (ports) llvm (devel/llvmXY) not the bundled one - DONE
• Test build on 9.x amd64 using upstream stage0 amd64 compiler + devel/libc++ - IN PROGRESS
• Build rust on amd64 through all supported versions (9.x → CURRENT)
• Build & test cross-compile inf/bits
• Build a stage0 compiler for i386 - DONE (upstream now provides i386 snapshots as well)
• Land a port for Cargo - DONE
• Build rust on Tier 2's (arm*)
• Test actual Rust software, fix bugs, submit pull requests upstream …

• https://mail.mozilla.org/pipermail/rust-dev/2013-November/006314.html
• https://github.com/rust-lang/rust/issues/14742
• https://github.com/rust-lang/rust/pull/14394
• https://github.com/rust-lang/rust/issues/8345
• Will's lang/rust WIP patch
• DragonFlyBSD: Add field to tls_tcb to support segmented stacks in LLVM
  • https://github.com/mneumann/rust/blob/dragonfly/patch-llvm
• ports/187962: [lang/rust] Fix the compilation on FreeBSD 10
• Interesting page about cross-compiling

• WillAndrews (will@)
• JeanSébastienPédron
• ThomasZander (riggs@)
• KubilayKocak