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24 lines
630 B
24 lines
630 B
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extern crate rustc_version; |
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use rustc_version::{version, version_meta, Channel}; |
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fn main() { |
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// Assert we haven't travelled back in time |
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assert!(version().unwrap().major >= 1); |
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// Set cfg flags depending on release channel |
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match version_meta().unwrap().channel { |
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Channel::Stable => { |
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println!("cargo:rustc-cfg=stable"); |
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} |
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Channel::Beta => { |
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println!("cargo:rustc-cfg=beta"); |
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} |
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Channel::Nightly => { |
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println!("cargo:rustc-cfg=nightly"); |
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} |
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Channel::Dev => { |
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println!("cargo:rustc-cfg=dev"); |
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} |
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} |
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}
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