ferrox-highs-sys 0.4.1

FFI bindings to the HiGHS MIP/LP solver
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48

fn main() {
    println!("cargo:rerun-if-changed=build.rs");
    println!("cargo:rerun-if-changed=highs_wrapper.h");
    println!("cargo:rerun-if-changed=highs_wrapper.cc");

    if std::env::var("CARGO_FEATURE_LINK").is_ok() {
        build_with_highs();
    }
}

fn build_with_highs() {
    use std::{env, path::PathBuf};

    let manifest_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
    let workspace_root = manifest_dir.parent().unwrap().parent().unwrap();

    let highs_build = env::var("FERROX_HIGHS_ROOT")
        .map_or_else(|_| workspace_root.join("vendor/highs/build"), PathBuf::from);

    let highs_src = highs_build.parent().unwrap().to_path_buf();

    assert!(
        highs_build.exists(),
        "HiGHS build not found at {}.\nRun `make highs` from the ferrox workspace root, or set FERROX_HIGHS_ROOT.",
        highs_build.display()
    );

    cc::Build::new()
        .cpp(true)
        .std("c++17")
        .file("highs_wrapper.cc")
        .include(highs_src.join("src"))
        .include(&highs_build)
        .flag_if_supported("-Wno-unused-parameter")
        .flag_if_supported("-Wno-deprecated-declarations")
        .compile("highs_wrapper");

    let lib_dir = highs_build.join("lib");
    println!("cargo:rustc-link-search=native={}", lib_dir.display());
    println!("cargo:LIB_DIR={}", lib_dir.display());
    println!("cargo:rustc-link-lib=dylib=highs");
    println!("cargo:rustc-link-arg=-Wl,-rpath,{}", lib_dir.display());

    #[cfg(target_os = "macos")]
    println!("cargo:rustc-link-lib=c++");
    #[cfg(target_os = "linux")]
    println!("cargo:rustc-link-lib=stdc++");
}