commit: d7f3dfefc2ab978d5d38b50d1e061c4a530d85f8 Author: Randy Barlow <randy <AT> electronsweatshop <DOT> com> AuthorDate: Sun Mar 17 03:00:43 2024 +0000 Commit: Sam James <sam <AT> gentoo <DOT> org> CommitDate: Thu Mar 21 02:22:02 2024 +0000 URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=d7f3dfef
dev-lang/rust: Disable LTO by default and use thin We've had a few issues with lto on, and it isn't on by default generally among Gentoo packages, so this commit flips it to be off by default. Additionally, in an upstream ticket[0] it was suggested to use thin LTO rather than fat LTO, so this commit makes that adjustment as well. [0] https://github.com/rust-lang/rust/issues/121124 [sam: Note that there's a risk of miscompilations with non-thin LTO, per the upstream bug(s).] Bug: https://bugs.gentoo.org/924301 Signed-off-by: Randy Barlow <randy <AT> electronsweatshop.com> Closes: https://github.com/gentoo/gentoo/pull/35796 Signed-off-by: Sam James <sam <AT> gentoo.org> dev-lang/rust/{rust-1.76.0.ebuild => rust-1.76.0-r1.ebuild} | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/dev-lang/rust/rust-1.76.0.ebuild b/dev-lang/rust/rust-1.76.0-r1.ebuild similarity index 99% rename from dev-lang/rust/rust-1.76.0.ebuild rename to dev-lang/rust/rust-1.76.0-r1.ebuild index 5c6cef79e27f..eb175488528c 100644 --- a/dev-lang/rust/rust-1.76.0.ebuild +++ b/dev-lang/rust/rust-1.76.0-r1.ebuild @@ -42,7 +42,7 @@ LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?} LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4" -IUSE="big-endian clippy cpu_flags_x86_sse2 debug dist doc llvm-libunwind +lto miri nightly parallel-compiler profiler rustfmt rust-analyzer rust-src system-bootstrap system-llvm test wasm ${ALL_LLVM_TARGETS[*]}" +IUSE="big-endian clippy cpu_flags_x86_sse2 debug dist doc llvm-libunwind lto miri nightly parallel-compiler profiler rustfmt rust-analyzer rust-src system-bootstrap system-llvm test wasm ${ALL_LLVM_TARGETS[*]}" # Please keep the LLVM dependency block separate. Since LLVM is slotted, # we need to *really* make sure we're not pulling more than one slot @@ -469,7 +469,8 @@ src_configure() { deny-warnings = $(usex wasm $(usex doc false true) true) backtrace-on-ice = true jemalloc = false - lto = "$(usex lto fat off)" + # See https://github.com/rust-lang/rust/issues/121124 + lto = "$(usex lto thin off)" [dist] src-tarball = false compression-formats = ["xz"]
