Expose rustc cfg values to build scripts #3243
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This commit is Cargo's portion of the implementation of [RFC 1721] where it will expose values printed by `rustc --print cfg` to build scripts. [RFC 1721]: https://github.com/rust-lang/rfcs/blob/master/text/1721-crt-static.md This will in turn be used to communicate features like `-C target-feature=+crt-static` which can be used to compile objects for statically linking against the msvcrt on MSVC.
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Expose rustc cfg values to build scripts This commit is Cargo's portion of the implementation of [RFC 1721] where it will expose values printed by `rustc --print cfg` to build scripts. [RFC 1721]: https://github.com/rust-lang/rfcs/blob/master/text/1721-crt-static.md This will in turn be used to communicate features like `-C target-feature=+crt-static` which can be used to compile objects for statically linking against the msvcrt on MSVC.
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☀️ Test successful - cargo-cross-linux, cargo-linux-32, cargo-linux-64, cargo-mac-32, cargo-mac-64, cargo-win-gnu-32, cargo-win-gnu-64, cargo-win-msvc-32, cargo-win-msvc-64 |
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This commit is Cargo's portion of the implementation of RFC 1721 where it will
expose values printed by
rustc --print cfgto build scripts.This will in turn be used to communicate features like
-C target-feature=+crt-staticwhich can be used to compile objects for staticallylinking against the msvcrt on MSVC.