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This repository was archived by the owner on May 28, 2025. It is now read-only.
Rollup merge of rust-lang#108898 - ferrocene:pa-libc-check-cfg, r=Mark-Simulacrum
Set `LIBC_CHECK_CFG=1` when building Rust code in bootstrap
Downstream forks of the Rust compiler might want to use a custom `libc` to add support for targets that are not yet available upstream. Adding a patch to replace `libc` with a custom one would cause compilation errors though, because Cargo would interpret the custom `libc` as part of the workspace, and apply the check-cfg lints on it.
Since rust-lang/libc#3037, the `libc` build script emits check-cfg flags only when the `LIBC_CHECK_CFG` environment variable is set, so this PR allows the use of custom `libc`s.
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