#![deny(non_upper_case_globals)]
#![deny(non_camel_case_types)]
#![deny(non_snake_case)]
#![deny(unused_mut)]
#![warn(missing_docs)]
extern crate gcc;
use std::env;
use std::ffi::OsString;
use std::path::PathBuf;
#[cfg(target_os = "macos")]
const OS: &'static str = "darwin";
#[cfg(target_os = "linux")]
const OS: &'static str = "linux";
#[cfg(target_os = "windows")]
const OS: &'static str = "windows";
const ANDROID_INCLUDE: &'static str = "platforms/android-21/arch-arm64/usr/include";
fn android_aarch_compiler() -> String {
"toolchains/aarch64-linux-android-4.9/prebuilt/".to_owned() + OS + "-x86_64/bin"
}
fn android_arm_compiler() -> String {
"toolchains/arm-linux-androideabi-4.9/prebuilt/".to_owned() + OS + "-x86_64/bin"
}
fn android_i686_compiler() -> String {
"toolchains/x86-4.9/prebuilt/".to_owned() + OS + "-x86_64/bin"
}
fn concat_paths(first: &str, second: &str) -> PathBuf {
let mut path = PathBuf::from(first);
path.push(second);
path
}
fn setup_android(config: &mut gcc::Config) {
let path = env::var_os("PATH").unwrap_or_else(OsString::new);
let ndk_home = env::var("NDK_HOME").expect("NDK_HOME is not set");
let mut paths = env::split_paths(&path).collect::<Vec<_>>();
paths.push(concat_paths(&ndk_home, &android_aarch_compiler()));
paths.push(concat_paths(&ndk_home, &android_arm_compiler()));
paths.push(concat_paths(&ndk_home, &android_i686_compiler()));
let new_path = env::join_paths(paths).expect("all paths were created using PathBuf's; qed");
env::set_var("PATH", new_path);
config.include(&concat_paths(&ndk_home, ANDROID_INCLUDE));
}
fn main() {
let mut base_config = gcc::Config::new();
base_config.include("depend/secp256k1/")
.include("depend/secp256k1/include")
.include("depend/secp256k1/src");
let target = env::var("TARGET").expect("TARGET env variable is set by cargo; qed");
if target.contains("android") {
setup_android(&mut base_config);
}
base_config.flag("-g")
.define("USE_NUM_NONE", Some("1"))
.define("USE_FIELD_INV_BUILTIN", Some("1"))
.define("USE_SCALAR_INV_BUILTIN", Some("1"))
.define("USE_FIELD_10X26", Some("1"))
.define("USE_SCALAR_8X32", Some("1"))
.define("USE_ENDOMORPHISM", Some("1"))
.define("ENABLE_MODULE_ECDH", Some("1"))
.define("ENABLE_MODULE_SCHNORR", Some("1"))
.define("ENABLE_MODULE_RECOVERY", Some("1"));
base_config.file("depend/secp256k1/contrib/lax_der_parsing.c")
.file("depend/secp256k1/src/ext.c")
.compile("libsecp256k1.a");
}