tectonic 0.16.9

A modernized, complete, embeddable TeX/LaTeX engine. Tectonic is forked from the XeTeX extension to the classic "Web2C" implementation of TeX and uses the TeXLive distribution of support files.
Documentation 
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// Copyright 2016-2021 the Tectonic Project
// Licensed under the MIT License.

//! Build script for tectonic binary. Handles some simple environment setup.

use std::env;

fn main() {
    // Depend on this file to prevent rebuilding on any change - see #1173 for details
    println!("cargo:rerun-if-changed=build.rs");

    // Re-export $TARGET during the build so that our executable tests know
    // what environment variable CARGO_TARGET_@TARGET@_RUNNER to check when
    // they want to spawn off executables.
    let target = env::var("TARGET").unwrap();
    println!("cargo:rustc-env=TARGET={target}");
}