Add Hardware Abstraction Layer (#56)

backend/builds/cpu_spqlios.rs

@@ -0,0 +1,10 @@
+use std::path::PathBuf;
+
+pub fn build() {
+    let dst: PathBuf = cmake::Config::new("src/implementation/cpu_spqlios/spqlios-arithmetic").build();
+
+    let lib_dir: PathBuf = dst.join("lib");
+
+    println!("cargo:rustc-link-search=native={}", lib_dir.display());
+    println!("cargo:rustc-link-lib=static=spqlios");
+}