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// Copyright (c) 2017-2021, The rav1e contributors. All rights reserved
//
// This source code is subject to the terms of the BSD 2 Clause License and
// the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
// was not distributed with this source code in the LICENSE file, you can
// obtain it at www.aomedia.org/license/software. If the Alliance for Open
// Media Patent License 1.0 was not distributed with this source code in the
// PATENTS file, you can obtain it at www.aomedia.org/license/patent.
#![allow(clippy::print_literal)]
#![allow(clippy::unused_io_amount)]
use rustc_version::{version, version_meta, Channel, Version};
#[allow(unused_imports)]
use std::env;
use std::fs;
use std::path::{Path, PathBuf};
use std::process::exit;
#[allow(dead_code)]
fn rerun_dir<P: AsRef<Path>>(dir: P) {
for entry in fs::read_dir(dir).unwrap() {
let entry = entry.unwrap();
let path = entry.path();
println!("cargo:rerun-if-changed={}", path.to_string_lossy());
if path.is_dir() {
rerun_dir(path);
}
}
}
#[allow(dead_code)]
fn hash_changed(
files: &[&str], out_dir: &str, config: &Path,
) -> Option<([u8; 8], PathBuf)> {
use std::collections::hash_map::DefaultHasher;
use std::hash::Hasher;
use std::io::Read;
let mut hasher = DefaultHasher::new();
let paths = files
.iter()
.map(Path::new)
.chain(std::iter::once(config))
.chain(std::iter::once(Path::new("build.rs")));
for path in paths {
if let Ok(mut f) = std::fs::File::open(path) {
let mut buf = Vec::new();
f.read_to_end(&mut buf).unwrap();
hasher.write(&buf);
} else {
panic!("Cannot open {}", path.display());
}
}
let strip = env::var("STRIP").unwrap_or_else(|_| "strip".to_string());
hasher.write(strip.as_bytes());
let hash = hasher.finish().to_be_bytes();
let hash_path = Path::new(&out_dir).join("asm.hash");
if let Ok(old_hash) = std::fs::read(&hash_path) {
if old_hash == hash {
return None;
}
}
Some((hash, hash_path))
}
#[cfg(feature = "asm")]
fn build_nasm_files() {
use std::fs::File;
use std::io::Write;
let out_dir = env::var("OUT_DIR").unwrap();
let dest_path = Path::new(&out_dir).join("config.asm");
let mut config_file = File::create(&dest_path).unwrap();
config_file.write(b" %define private_prefix rav1e\n").unwrap();
config_file.write(b" %define ARCH_X86_32 0\n").unwrap();
config_file.write(b" %define ARCH_X86_64 1\n").unwrap();
config_file.write(b" %define PIC 1\n").unwrap();
config_file.write(b" %define STACK_ALIGNMENT 16\n").unwrap();
config_file.write(b" %define HAVE_AVX512ICL 1\n").unwrap();
if env::var("CARGO_CFG_TARGET_VENDOR").unwrap() == "apple" {
config_file.write(b" %define PREFIX 1\n").unwrap();
}
let asm_files = &[
"src/x86/ipred_avx2.asm",
"src/x86/ipred_sse.asm",
"src/x86/ipred16_avx2.asm",
"src/x86/itx_avx2.asm",
"src/x86/itx_sse.asm",
"src/x86/itx16_avx2.asm",
"src/x86/itx16_sse.asm",
"src/x86/looprestoration_avx2.asm",
"src/x86/looprestoration16_avx2.asm",
"src/x86/mc_avx2.asm",
"src/x86/mc16_avx2.asm",
"src/x86/mc_avx512.asm",
"src/x86/mc_sse.asm",
"src/x86/mc16_sse.asm",
"src/x86/me.asm",
"src/x86/sad_plane.asm",
"src/x86/sad_sse2.asm",
"src/x86/sad_avx.asm",
"src/x86/satd.asm",
"src/x86/cdef_dist.asm",
"src/x86/sse.asm",
"src/x86/cdef_rav1e.asm",
"src/x86/cdef_sse.asm",
"src/x86/cdef16_avx2.asm",
"src/x86/cdef16_sse.asm",
"src/x86/tables.asm",
];
if let Some((hash, hash_path)) =
hash_changed(asm_files, &out_dir, &dest_path)
{
let mut config_include_arg = String::from("-I");
config_include_arg.push_str(&out_dir);
config_include_arg.push('/');
let mut nasm = nasm_rs::Build::new();
nasm.min_version(2, 14, 0);
for file in asm_files {
nasm.file(file);
}
nasm.flag(&config_include_arg);
nasm.flag("-Isrc/");
let obj = nasm.compile_objects().unwrap_or_else(|e| {
println!("cargo:warning={}", e);
panic!("NASM build failed. Make sure you have nasm installed or disable the \"asm\" feature.\n\
You can get NASM from https://nasm.us or your system's package manager.\n\nerror: {}", e);
});
// cc is better at finding the correct archiver
let mut cc = cc::Build::new();
for o in obj {
cc.object(o);
}
cc.compile("rav1easm");
// Strip local symbols from the asm library since they
// confuse the debugger.
fn strip<P: AsRef<Path>>(obj: P) {
let strip = env::var("STRIP").unwrap_or_else(|_| "strip".to_string());
let mut cmd = std::process::Command::new(strip);
cmd.arg("-x").arg(obj.as_ref());
let _ = cmd.output();
}
strip(Path::new(&out_dir).join("librav1easm.a"));
std::fs::write(hash_path, &hash[..]).unwrap();
} else {
println!("cargo:rustc-link-search={}", out_dir);
}
println!("cargo:rustc-link-lib=static=rav1easm");
rerun_dir("src/x86");
rerun_dir("src/ext/x86");
}
#[cfg(feature = "asm")]
fn build_asm_files() {
use std::fs::File;
use std::io::Write;
let out_dir = env::var("OUT_DIR").unwrap();
let dest_path = Path::new(&out_dir).join("config.h");
let mut config_file = File::create(&dest_path).unwrap();
if env::var("CARGO_CFG_TARGET_VENDOR").unwrap() == "apple" {
config_file.write(b" #define PREFIX 1\n").unwrap();
}
config_file.write(b" #define PRIVATE_PREFIX rav1e_\n").unwrap();
config_file.write(b" #define ARCH_AARCH64 1\n").unwrap();
config_file.write(b" #define ARCH_ARM 0\n").unwrap();
config_file.write(b" #define CONFIG_LOG 1 \n").unwrap();
config_file.write(b" #define HAVE_ASM 1\n").unwrap();
config_file.sync_all().unwrap();
let asm_files = &[
"src/arm/64/cdef.S",
"src/arm/64/cdef16.S",
"src/arm/64/mc.S",
"src/arm/64/mc16.S",
"src/arm/64/itx.S",
"src/arm/64/itx16.S",
"src/arm/64/ipred.S",
"src/arm/64/ipred16.S",
"src/arm/64/sad.S",
"src/arm/tables.S",
];
if let Some((hash, hash_path)) =
hash_changed(asm_files, &out_dir, &dest_path)
{
cc::Build::new()
.files(asm_files)
.include(".")
.include(&out_dir)
.compile("rav1e-aarch64");
std::fs::write(hash_path, &hash[..]).unwrap();
} else {
println!("cargo:rustc-link-search={}", out_dir);
println!("cargo:rustc-link-lib=static=rav1e-aarch64");
}
rerun_dir("src/arm");
}
fn rustc_version_check() {
// This should match the version in the CI
// Make sure to updated README.md when this changes.
const REQUIRED_VERSION: &str = "1.59.0";
if version().unwrap() < Version::parse(REQUIRED_VERSION).unwrap() {
eprintln!("rav1e requires rustc >= {}.", REQUIRED_VERSION);
exit(1);
}
if version_meta().unwrap().channel == Channel::Nightly {
println!("cargo:rustc-cfg=nightly_rustc");
}
}
#[allow(unused_variables)]
fn main() {
rustc_version_check();
let arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap();
let os = env::var("CARGO_CFG_TARGET_OS").unwrap();
// let env = env::var("CARGO_CFG_TARGET_ENV").unwrap();
#[cfg(feature = "asm")]
{
if arch == "x86_64" {
println!("cargo:rustc-cfg={}", "nasm_x86_64");
build_nasm_files()
}
if arch == "aarch64" {
println!("cargo:rustc-cfg={}", "asm_neon");
build_asm_files()
}
}
if os == "windows" && cfg!(feature = "decode_test") {
panic!("Unsupported feature on this platform!");
}
vergen::generate_cargo_keys(vergen::ConstantsFlags::all())
.expect("Unable to generate the cargo keys!");
println!("cargo:rustc-env=PROFILE={}", env::var("PROFILE").unwrap());
}