Fix uclibc LLVM target triples
#138431
Merged
Fix uclibc LLVM target triples
#138431
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
`uclibc` is not an environment understood by LLVM, it is only a concept in Clang that can be selected with `-muclibc` (it affects which dynamic linker is passed to the static linker's `-dynamic-linker` flag). In fact, using `uclibcgnueabi`/`uclibc` is actively harmful, as it prevents LLVM from seeing that the target is gnu-like; we should use `gnueabi`/`gnu` directly instead.
rustbot
added
S-waiting-on-review
|
These commits modify compiler targets. |
|
Yeah, that seems reasonable. I'll wait for the pinged target maintainers for related targets to have a chance to chime in, otherwise I'll approve it in a few days considering there's no listed target maintainers. Please ping me next Wednesday (2025-03-19) to r+ this, I'll mark this as S-blocked before then to not have it show up in my review queue (since it's not yet actionable for me). @rustbot blocked (until 2025-03-19 to give some time for related target maintainers to chime in if they want to) |
rustbot
added
S-blocked
|
Looks reasonable to me. |
|
Seems ok to me! Thanks for the tag. |
|
Okay that seems like enough time, thanks for the feedback @lancethepants and @skrap! @bors r+ rollup |
bors
added
S-waiting-on-bors
matthiaskrgr
added a commit
to matthiaskrgr/rust
that referenced
this pull request
Mar 29, 2025
…ouxu Fix `uclibc` LLVM target triples `uclibc` is not an environment understood by LLVM, it is only a concept in Clang that can be selected with `-muclibc` (it affects which dynamic linker is passed to the static linker's `-dynamic-linker` flag). In fact, using `uclibcgnueabi`/`uclibc` is actively harmful, as it prevents LLVM from seeing that the target is gnu-like; we should use `gnueabi`/`gnu` directly instead. Motivation: To make it easier to verify that [`cc-rs`' conversion from `rustc` to Clang/LLVM triples](rust-lang/cc-rs#1431) is correct. **There are no target maintainers for these targets.** So I'll CC `@lancethepants` and `@skrap` who maintain the related `armv7-unknown-linux-uclibceabi` and `armv7-unknown-linux-uclibceabihf` (both of which already pass `-gnu` instead of `-uclibc`) in case they have any insights. r? jieyouxu
bors
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Mar 29, 2025
…iaskrgr Rollup of 8 pull requests Successful merges: - rust-lang#137928 (stabilize const_cell) - rust-lang#138431 (Fix `uclibc` LLVM target triples) - rust-lang#138832 (Start using `with_native_path` in `std::sys::fs`) - rust-lang#139060 (replace commit placeholder in vendor status with actual commit) - rust-lang#139081 (std: deduplicate `errno` accesses) - rust-lang#139100 (compiletest: Support matching diagnostics on lines below) - rust-lang#139105 (`BackendRepr::is_signed`: comment why this may panics) - rust-lang#139106 (Mark .pp files as Rust) r? `@ghost` `@rustbot` modify labels: rollup
bors
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Mar 29, 2025
…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#137928 (stabilize const_cell) - rust-lang#138431 (Fix `uclibc` LLVM target triples) - rust-lang#138832 (Start using `with_native_path` in `std::sys::fs`) - rust-lang#139081 (std: deduplicate `errno` accesses) - rust-lang#139100 (compiletest: Support matching diagnostics on lines below) - rust-lang#139105 (`BackendRepr::is_signed`: comment why this may panics) - rust-lang#139106 (Mark .pp files as Rust) r? `@ghost` `@rustbot` modify labels: rollup
rust-timer
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Mar 30, 2025
Rollup merge of rust-lang#138431 - madsmtm:uclibc-llvm-target, r=jieyouxu Fix `uclibc` LLVM target triples `uclibc` is not an environment understood by LLVM, it is only a concept in Clang that can be selected with `-muclibc` (it affects which dynamic linker is passed to the static linker's `-dynamic-linker` flag). In fact, using `uclibcgnueabi`/`uclibc` is actively harmful, as it prevents LLVM from seeing that the target is gnu-like; we should use `gnueabi`/`gnu` directly instead. Motivation: To make it easier to verify that [`cc-rs`' conversion from `rustc` to Clang/LLVM triples](rust-lang/cc-rs#1431) is correct. **There are no target maintainers for these targets.** So I'll CC ``@lancethepants`` and ``@skrap`` who maintain the related `armv7-unknown-linux-uclibceabi` and `armv7-unknown-linux-uclibceabihf` (both of which already pass `-gnu` instead of `-uclibc`) in case they have any insights. r? jieyouxu
github-actions bot
pushed a commit
to model-checking/verify-rust-std
that referenced
this pull request
Apr 2, 2025
…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#137928 (stabilize const_cell) - rust-lang#138431 (Fix `uclibc` LLVM target triples) - rust-lang#138832 (Start using `with_native_path` in `std::sys::fs`) - rust-lang#139081 (std: deduplicate `errno` accesses) - rust-lang#139100 (compiletest: Support matching diagnostics on lines below) - rust-lang#139105 (`BackendRepr::is_signed`: comment why this may panics) - rust-lang#139106 (Mark .pp files as Rust) r? `@ghost` `@rustbot` modify labels: rollup
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
uclibcis not an environment understood by LLVM, it is only a concept in Clang that can be selected with-muclibc(it affects which dynamic linker is passed to the static linker's-dynamic-linkerflag).In fact, using
uclibcgnueabi/uclibcis actively harmful, as it prevents LLVM from seeing that the target is gnu-like; we should usegnueabi/gnudirectly instead.Motivation: To make it easier to verify that
cc-rs' conversion fromrustcto Clang/LLVM triples is correct.There are no target maintainers for these targets. So I'll CC @lancethepants and @skrap who maintain the related
armv7-unknown-linux-uclibceabiandarmv7-unknown-linux-uclibceabihf(both of which already pass-gnuinstead of-uclibc) in case they have any insights.r? jieyouxu