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use std::env;
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const CPAL_ASIO_DIR: &'static str = "CPAL_ASIO_DIR";
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fn main() {
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// If ASIO directory isn't set silently return early
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// otherwise set the asio config flag
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match env::var(CPAL_ASIO_DIR) {
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Err(_) => return,
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Ok(_) => println!("cargo:rustc-cfg=asio"),
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};
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} |