view rust/hgcli/build.rs @ 45935:eccbfa7e19c0

packaging: enable rust extensions on centos

Test on CentOS 7, repository with ~170000 tracked files,
    no untracked files:
10 runs with this enabled:
 -- Run #0 time: 0.6519973278045654
 -- Run #1 time: 0.6933724880218506
 -- Run #2 time: 0.7512078285217285
 -- Run #3 time: 0.7517638206481934
 -- Run #4 time: 0.5966529846191406
 -- Run #5 time: 0.5960886478424072
 -- Run #6 time: 0.5940573215484619
 -- Run #7 time: 0.5963726043701172
 -- Run #8 time: 0.6048009395599365
 -- Run #9 time: 0.603604793548584

10 runs without this enabled:
 -- Run #0 time: 2.127584457397461
 -- Run #1 time: 2.066192865371704
 -- Run #2 time: 2.0831892490386963
 -- Run #3 time: 2.077716588973999
 -- Run #4 time: 2.07608962059021
 -- Run #5 time: 2.072899341583252
 -- Run #6 time: 2.094369888305664
 -- Run #7 time: 2.067504644393921
 -- Run #8 time: 2.069610834121704
 -- Run #9 time: 2.0567898750305176

Differential Revision: https://phab.mercurial-scm.org/D9294

// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at https://mozilla.org/MPL/2.0/.

/*! Build script to integrate PyOxidizer. */

fn main() {
    if let Ok(config_rs) =
        std::env::var("DEP_PYTHONXY_DEFAULT_PYTHON_CONFIG_RS")
    {
        println!(
            "cargo:rustc-env=PYOXIDIZER_DEFAULT_PYTHON_CONFIG_RS={}",
            config_rs
        );
    } else {
        panic!("unable to find build artifacts generated by pyembed crate");
    }
}