build.rs

extern crate cc;

fn main() {
    let flags = &["-ffast-math", "-O3", "-Wall", "-std=c99", "-march=native"];

    let flags_if_supported = &["-std=gnu99", "-fopenmp", "-lomp"];

    let headers = &["ecoz2/src/include", "ecoz2/src/sgn", "ecoz2/src/hmm"];

    let files = vec![
        "ecoz2/src/ecoz2/ecoz2.c",
        "ecoz2/src/utl/utl.c",
        "ecoz2/src/utl/fileutil.c",
        "ecoz2/src/utl/list.c",
        "ecoz2/src/utl/memutil.c",
        "ecoz2/src/sgn/sgn.c",
        "ecoz2/src/sgn/dr_wav.c",
        "ecoz2/src/lpc/lpc_signals.c",
        "ecoz2/src/lpc/lpa_on_signal.c",
        "ecoz2/src/lpc/lpca.c",
        "ecoz2/src/lpc/prd.c",
        "ecoz2/src/lpc/prd_show_file.c",
        "ecoz2/src/lpc/ref2raas.c",
        "ecoz2/src/vq/vq_learn.c",
        "ecoz2/src/vq/vq_quantize.c",
        "ecoz2/src/vq/vq_classify.c",
        "ecoz2/src/vq/vq_show.c",
        "ecoz2/src/vq/vq.c",
        "ecoz2/src/vq/distortion.c",
        "ecoz2/src/vq/report.c",
        "ecoz2/src/vq/sigma.c",
        "ecoz2/src/vq/inertia.c",
        "ecoz2/src/vq/quantize.c",
        "ecoz2/src/hmm/hmm.c",
        "ecoz2/src/hmm/hmm_learn.c",
        "ecoz2/src/hmm/hmm_classify.c",
        "ecoz2/src/hmm/hmm_show.c",
        "ecoz2/src/hmm/seq_show_files.c",
        "ecoz2/src/hmm/hmm_adjustb.c",
        "ecoz2/src/hmm/hmm_file.c",
        //        "ecoz2/src/hmm/hmm_refinement.c",
        "ecoz2/src/hmm/hmm_prob.c",
        "ecoz2/src/hmm/hmm_log_prob.c",
        "ecoz2/src/hmm/hmm_genQopt.c",
        "ecoz2/src/hmm/hmm_estimateB.c",
        "ecoz2/src/hmm/hmm_gen.c",
        "ecoz2/src/hmm/distr.c",
        "ecoz2/src/hmm/symbol.c",
    ];

    // https://doc.rust-lang.org/cargo/reference/build-scripts.html#rerun-if-changed
    for f in headers {
        println!("cargo:rerun-if-changed={}", f)
    }
    for f in &files {
        println!("cargo:rerun-if-changed={}", f)
    }

    let mut build = cc::Build::new();

    for f in flags {
        build.flag(f);
    }

    for f in flags_if_supported {
        build.flag(f);
    }

    build.includes(headers);

    build.flag(std::env::var("DEP_OPENMP_FLAG").unwrap());

    if let Ok(val) = std::env::var("PROB_T") {
        build.flag(format!("-DPROB_T={}", val).as_str());
    }

    build.files(files).compile("ecoz2_lib");
}