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Mix compiler and runtime helpers for Rustler.

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rustler priv templates basic src lib.rs
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priv/templates/basic/src/lib.rs 

// When writing your NIF you should edit `lib.in.rs`. This is done

// to support both compilation with and without syntex.



// Enable the rustler_codegen compiler plugin if we are not using

// syntex.

#![cfg_attr(not(feature = "with-syntex"), feature(plugin))]

#![cfg_attr(not(feature = "with-syntex"), plugin(rustler_codegen))]



// If we are using syntex, include the expanded file. This is what

// causes bad error messages.

#[cfg(feature = "with-syntex")]

include!(concat!(env!("OUT_DIR"), "/lib.rs"));



// If we are on nightly, we include the file directly.

// The rust compiler will then report errors in that file.

#[cfg(not(feature = "with-syntex"))]

include!("lib.in.rs");