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17 lines
651 B
Rust
17 lines
651 B
Rust
fn main() {
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println!("cargo:rerun-if-changed=build.rs");
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println!("cargo:rerun-if-env-changed=RUSTC_BOOTSTRAP");
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if std::env::var("RUSTC_BOOTSTRAP").is_err() {
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eprintln!(
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"error: you are attempting to build the compiler without going through bootstrap"
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);
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eprintln!(
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"help: see https://rustc-dev-guide.rust-lang.org/building/how-to-build-and-run.html for how to build the compiler"
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);
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eprintln!(
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"help: if you know what you're doing, set the RUSTC_BOOTSTRAP environment variable to any value"
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);
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panic!("wrong command used for building");
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}
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}
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