27 lines
826 B
Rust
27 lines
826 B
Rust
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extern crate autocfg;
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fn main() {
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// Normally, cargo will set `OUT_DIR` for build scripts.
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let ac = autocfg::AutoCfg::with_dir("target").unwrap();
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// since ancient times...
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ac.emit_has_trait("std::ops::Add");
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ac.emit_trait_cfg("std::ops::Add", "has_ops");
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// trait parameters have to be provided
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ac.emit_has_trait("std::borrow::Borrow<str>");
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ac.emit_trait_cfg("std::borrow::Borrow<str>", "has_borrow");
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// rustc 1.8.0
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ac.emit_has_trait("std::ops::AddAssign");
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ac.emit_trait_cfg("std::ops::AddAssign", "has_assign_ops");
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// rustc 1.12.0
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ac.emit_has_trait("std::iter::Sum");
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ac.emit_trait_cfg("std::iter::Sum", "has_sum");
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// rustc 1.28.0
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ac.emit_has_trait("std::alloc::GlobalAlloc");
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ac.emit_trait_cfg("std::alloc::GlobalAlloc", "has_global_alloc");
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}
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