use std::env;
use std::path::PathBuf;
#[allow(dead_code)]
fn env_var_rerun(name: &str) -> Result<String, env::VarError> {
println!("cargo:rerun-if-env-changed={}", name);
env::var(name)
}
#[cfg(feature = "static")]
pub fn get_openssl_root_dir() -> PathBuf {
let artifacts = openssl_src::Build::new().build();
artifacts.lib_dir().parent().unwrap().to_path_buf()
}
fn main() {
let out_dir = env::var("OUT_DIR").unwrap();
#[cfg(feature = "static")]
{
let mut config = cmake::Config::new("libdatachannel");
config.build_target("datachannel-static");
config.out_dir(&out_dir);
config.define("NO_WEBSOCKET", "ON");
config.define("NO_EXAMPLES", "ON");
config.define("NO_MEDIA", "ON");
config.define("OPENSSL_ROOT_DIR", get_openssl_root_dir());
config.define("OPENSSL_USE_STATIC_LIBS", "TRUE");
config.build();
}
let mut config = cmake::Config::new("libdatachannel");
config.out_dir(&out_dir);
config.define("NO_WEBSOCKET", "ON");
config.define("NO_EXAMPLES", "ON");
#[cfg(not(feature = "static"))]
{
if let Ok(openssl_root_dir) = env_var_rerun("OPENSSL_ROOT_DIR") {
config.define("OPENSSL_ROOT_DIR", openssl_root_dir);
}
if let Ok(openssl_libraries) = env_var_rerun("OPENSSL_LIBRARIES") {
config.define("OPENSSL_LIBRARIES", openssl_libraries);
}
}
config.build();
if cfg!(feature = "static") {
#[cfg(feature = "static")]
cpp_build::Config::new()
.include(format!("{}/lib", out_dir))
.build("src/lib.rs");
println!("cargo:rustc-link-lib=static=crypto");
println!("cargo:rustc-link-lib=static=ssl");
println!(
"cargo:rustc-link-search=native={}/build/deps/libjuice",
out_dir
);
println!("cargo:rustc-link-lib=static=juice-static");
println!(
"cargo:rustc-link-search=native={}/build/deps/usrsctp/usrsctplib",
out_dir
);
println!("cargo:rustc-link-lib=static=usrsctp");
println!("cargo:rustc-link-search=native={}/build", out_dir);
println!("cargo:rustc-link-lib=static=datachannel-static");
} else {
println!("cargo:rustc-link-search=native={}/lib", out_dir);
println!("cargo:rustc-link-lib=dylib=datachannel");
}
let bindings = bindgen::Builder::default()
.header(format!("{}/include/rtc/rtc.h", out_dir))
.generate()
.expect("Unable to generate bindings");
let out_path = PathBuf::from(out_dir);
bindings
.write_to_file(out_path.join("bindings.rs"))
.expect("Couldn't write bindings");
}