23 lines
672 B
Rust
23 lines
672 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_path("std::vec::Vec");
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ac.emit_path_cfg("std::vec::Vec", "has_vec");
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// rustc 1.10.0
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ac.emit_has_path("std::panic::PanicInfo");
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ac.emit_path_cfg("std::panic::PanicInfo", "has_panic_info");
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// rustc 1.20.0
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ac.emit_has_path("std::mem::ManuallyDrop");
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ac.emit_path_cfg("std::mem::ManuallyDrop", "has_manually_drop");
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// rustc 1.25.0
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ac.emit_has_path("std::ptr::NonNull");
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ac.emit_path_cfg("std::ptr::NonNull", "has_non_null");
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}
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