strided-einsum2 0.1.1

Binary einsum (pairwise tensor contraction) on strided views.
Documentation 
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fn main() {
    #[cfg(feature = "blas")]
    {
        // Re-run if the library path changes.
        println!("cargo:rerun-if-env-changed=OPENBLAS_LIB_DIR");

        // Link against system OpenBLAS which provides CBLAS symbols.
        // On macOS: brew install openblas
        // On Ubuntu: apt install libopenblas-dev
        if let Ok(lib_dir) = std::env::var("OPENBLAS_LIB_DIR") {
            println!("cargo:rustc-link-search=native={}", lib_dir);
        } else if cfg!(target_os = "macos") {
            // Homebrew default path on Apple Silicon
            println!("cargo:rustc-link-search=native=/opt/homebrew/opt/openblas/lib");
            // Homebrew default path on Intel
            println!("cargo:rustc-link-search=native=/usr/local/opt/openblas/lib");
        }
        println!("cargo:rustc-link-lib=openblas");
    }
}