Change rustc-cdylib-link-arg error to a warning.
#9563
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Change `rustc-cdylib-link-arg` error to a warning. In rust-lang#9523, an error was added if `cargo:rustc-cdylib-link-arg` was issued in a build script without actually having a cdylib target. This uncovered that there was an unintentional change in rust-lang#8441 to cause those link args to be applied to transitive dependencies. This changes it so that the error is now a warning, with a note that this may become an error in the future. It also changes it so that the unstable `rustc-link-arg*` instructions only apply to the package that emitted them.
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Beta 1.54 backports This backports the following changes to 1.54 beta: * #9595 — Relax doc collision error. This was an unintended regression where a warning was switched to an error in 1.54. * #9563 — Change rustc-cdylib-link-arg error to a warning. Validation was added in #9523 (1.54) that generated an error. However, it was unknown at the time that use of link args via dependencies was being used. Rather than regress those projects (which has been on stable since 1.50), this switches the validation to a warning to indicate this was not intended. * #9604 — Disambiguate is_symlink. Required to get CI to pass.
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Update cargo This also updates `opener` used in bootstrap (to try to keep dependencies unified). 18 commits in 44456677b5d1d82fe981c955dc5c67734b31f340..9233aa06c801801cff75df65df718d70905a235e 2021-06-12 18:00:01 +0000 to 2021-06-22 21:32:55 +0000 - Detect incorrectly named cargo.toml (rust-lang/cargo#9607) - Unify weak and namespaced features. (rust-lang/cargo#9574) - Change `rustc-cdylib-link-arg` error to a warning. (rust-lang/cargo#9563) - Updates to future-incompatible reporting. (rust-lang/cargo#9606) - Add a compatibility notice for diesel and the new resolver. (rust-lang/cargo#9602) - Don't allow config env to modify vars set by cargo (rust-lang/cargo#9579) - Disambiguate is_symlink. (rust-lang/cargo#9604) - Update opener requirement from 0.4 to 0.5 (rust-lang/cargo#9583) - Avoid quadratic complexity when splitting output into lines (rust-lang/cargo#9586) - Bump to 0.56.0, update changelog (rust-lang/cargo#9597) - Fix dep-info files including non-local build script paths. (rust-lang/cargo#9596) - Relax doc collision error. (rust-lang/cargo#9595) - Handle "jobs = 0" case in cargo config files (rust-lang/cargo#9584) - Enhancements to testsuite error output. (rust-lang/cargo#9589) - Fix typo (rust-lang/cargo#9590) - Enable support for fix --edition for 2021. (rust-lang/cargo#9588) - Add more details for installing git repository errors (rust-lang/cargo#9582) - More information for links conflicting (rust-lang/cargo#9568)
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In #9523, an error was added if
cargo:rustc-cdylib-link-argwas issued in a build script without actually having a cdylib target. This uncovered that there was an unintentional change in #8441 to cause those link args to be applied to transitive dependencies.This changes it so that the error is now a warning, with a note that this may become an error in the future. It also changes it so that the unstable
rustc-link-arg*instructions only apply to the package that emitted them.