build.rs

use std::env;
use std::path::{PathBuf};

use cmake::Config;

fn main() {
    let profile = env::var("PROFILE").unwrap();
    let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
    let target_os = env::var("CARGO_CFG_TARGET_OS").unwrap();
    let manifest_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
    let cmake_source_dir = manifest_dir.clone();
    let mut cmake_binary_dir = PathBuf::from(&out_dir);
    cmake_binary_dir.push("build");

    println!("OUT_DIR {}", &out_dir.to_str().unwrap());
    println!("MANIFEST_DIR {}", &manifest_dir.to_str().unwrap());
    println!("CMAKE_SOURCE_DIR: {}", &cmake_source_dir.to_str().unwrap());
    println!("CMAKE_BINARY_DIR: {}", &cmake_binary_dir.to_str().unwrap());

    let generator = "Ninja";
    let cmake_build_type = if profile == "debug" { "Debug" } else { "Release" };

    let mut cmake_config = Config::new(&cmake_source_dir);

    cmake_config
        .generator(generator)
        .profile(cmake_build_type);

    if target_os == "windows" {
        cmake_config
            .define("CMAKE_C_FLAGS", "/nologo")
            .define("CMAKE_CXX_FLAGS", "/nologo")
            .static_crt(true);
    }

    if target_os == "macos" {
        cmake_config
            .define("CMAKE_OSX_DEPLOYMENT_TARGET", "10.9");
    }

    let cmake_output = cmake_config.build();

    println!(
        "cargo:rustc-link-search=native={}",
        cmake_output.join("build\\lib").display()
    );

    println!("cargo:rustc-link-lib=static=pwsh-host");

    println!("cargo:rerun-if-changed=build.rs");
}