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| author | Manish Goregaokar <manishsmail@gmail.com> | 2020-07-15 11:01:33 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-07-15 11:01:33 -0700 |
| commit | 0bde1c3ae5b75eb07338ecf26e797c2f1c436518 (patch) | |
| tree | e44d40c0247410d83ffa8a34aa0becdca30b9418 | |
| parent | c43a11539866bad9f6e3e895db9154eeef0337af (diff) | |
| parent | 2ba58f982349d0ea24630c456d38457b0c8d9e01 (diff) | |
| download | rust-0bde1c3ae5b75eb07338ecf26e797c2f1c436518.tar.gz rust-0bde1c3ae5b75eb07338ecf26e797c2f1c436518.zip | |
Rollup merge of #74374 - cuviper:lto-bitcode-1.45, r=Mark-Simulacrum
Add a 1.45 release note on lto vs. embed-bitcode I added a bullet for Cargo's use of `embed-bitcode`, since that was even noteworthy enough for the Inside Rust blog. Then more importantly, I added a compatibility note for how this may interact poorly with manually enabling LTO. r? @Mark-Simulacrum
| -rw-r--r-- | RELEASES.md | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/RELEASES.md b/RELEASES.md index 977796c6613..7bac14cb415 100644 --- a/RELEASES.md +++ b/RELEASES.md @@ -82,6 +82,9 @@ Stabilized APIs Cargo ----- +- [Cargo uses the `embed-bitcode` flag to optimize disk usage and build + time.][cargo/8066] + Misc ---- - [Rustdoc now supports strikethrough text in Markdown.][71928] E.g. @@ -97,12 +100,18 @@ Compatibility Notes - [Rustdoc's CLI's extra error exit codes have been removed.][71900] These were previously undocumented and not intended for public use. Rustdoc still provides a non-zero exit code on errors. +- [Rustc's `lto` flag is incompatible with the new `embed-bitcode=no`.][71848] + This may cause issues if LTO is enabled through `RUSTFLAGS` or `cargo rustc` + flags while cargo is adding `embed-bitcode` itself. The recommended way to + control LTO is with Cargo profiles, either in `Cargo.toml` or `.cargo/config`, + or by setting `CARGO_PROFILE_<name>_LTO` in the environment. Internals Only -------------- - [Make clippy a git subtree instead of a git submodule][70655] - [Unify the undo log of all snapshot types][69464] +[71848]: https://github.com/rust-lang/rust/issues/71848/ [73420]: https://github.com/rust-lang/rust/issues/73420/ [72324]: https://github.com/rust-lang/rust/pull/72324/ [71843]: https://github.com/rust-lang/rust/pull/71843/ @@ -129,6 +138,7 @@ Internals Only [69813]: https://github.com/rust-lang/rust/pull/69813/ [69464]: https://github.com/rust-lang/rust/pull/69464/ [68717]: https://github.com/rust-lang/rust/pull/68717/ +[cargo/8066]: https://github.com/rust-lang/cargo/pull/8066 [`Arc::as_ptr`]: https://doc.rust-lang.org/stable/std/sync/struct.Arc.html#method.as_ptr [`BTreeMap::remove_entry`]: https://doc.rust-lang.org/stable/std/collections/struct.BTreeMap.html#method.remove_entry [`Rc::as_ptr`]: https://doc.rust-lang.org/stable/std/rc/struct.Rc.html#method.as_ptr |