Krys4lide/crates/fsv-sys/build.rs

58 lines
2.2 KiB
Rust
Raw Permalink Normal View History

use std::{env, path::PathBuf};
// Supported versions of FSV
static SUPPORTED_FSV_VERSIONS: [&str; 2] = ["1.40.14", "1.40.13"];
fn build_bindings(version: &str, target_code: &str) -> PathBuf {
let target = env::var("TARGET").expect("TARGET not set");
let wrapper_path = format!("bindgen-wrappers/{}/wrapper.{}.h", version, target_code);
let bindings = bindgen::Builder::default()
// The input header we would like to generate
// bindings for.
.header(wrapper_path)
// To generate the bindings for specific target
.clang_arg(format!("--target={}", target))
// Limit the bindings generation to the SSV_ prefix
.allowlist_item("SSV_.*")
// Tell cargo to invalidate the built crate whenever any of the
// included header files changed.
.parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
// Finish the builder and generate the bindings.
.generate()
// Unwrap the Result and panic on failure.
.expect("Unable to generate bindings");
// Write the bindings to the $OUT_DIR/bindings.rs file.
let out_dir = PathBuf::from(env::var("OUT_DIR").unwrap());
let out_file = format!("bindings_{}.rs", version);
let out_path = out_dir.join(out_file);
bindings
.write_to_file(&out_path)
.expect("Couldn't write bindings! ");
out_path
}
fn get_target_code() -> String {
// Use CARGO configuration env Variable, because !cfg(target_os) is not available in build.rs
// Source: https://kazlauskas.me/entries/writing-proper-buildrs-scripts
let target_os = env::var("CARGO_CFG_TARGET_OS");
match target_os.as_ref().map(|x| &**x) {
Ok("linux") => "linux", // lib_name = "ssvlux64";
Ok("windows") => "win", // lib_name = "Ssvw64";
Ok("macos") => "macosx", // lib_name = "ssvosx";
tos => panic!("Unsupported target_os {:?}", tos),
}
.to_string()
}
fn main() {
let target_code = get_target_code();
// Build the bindings for each supported version of FSV
let bindings_paths: Vec<PathBuf> = SUPPORTED_FSV_VERSIONS
.iter()
.map(|version| build_bindings(version, &target_code))
.collect();
println!("FSV bindings generated: {:#?}", bindings_paths);
}