ash-molten/build/build.rs

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// BEGIN - Embark standard lints v0.3
// do not change or add/remove here, but one can add exceptions after this section
// for more info see: <https://github.com/EmbarkStudios/rust-ecosystem/issues/59>
#![deny(unsafe_code)]
#![warn(
clippy::all,
clippy::await_holding_lock,
clippy::dbg_macro,
clippy::debug_assert_with_mut_call,
clippy::doc_markdown,
clippy::empty_enum,
clippy::enum_glob_use,
clippy::exit,
clippy::explicit_into_iter_loop,
clippy::filter_map_next,
clippy::fn_params_excessive_bools,
clippy::if_let_mutex,
clippy::imprecise_flops,
clippy::inefficient_to_string,
clippy::large_types_passed_by_value,
clippy::let_unit_value,
clippy::linkedlist,
clippy::lossy_float_literal,
clippy::macro_use_imports,
clippy::map_err_ignore,
clippy::map_flatten,
clippy::map_unwrap_or,
clippy::match_on_vec_items,
clippy::match_same_arms,
clippy::match_wildcard_for_single_variants,
clippy::mem_forget,
clippy::mismatched_target_os,
clippy::needless_borrow,
clippy::needless_continue,
clippy::option_option,
clippy::pub_enum_variant_names,
clippy::ref_option_ref,
clippy::rest_pat_in_fully_bound_structs,
clippy::string_add_assign,
clippy::string_add,
clippy::string_to_string,
clippy::suboptimal_flops,
clippy::todo,
clippy::unimplemented,
clippy::unnested_or_patterns,
clippy::unused_self,
clippy::verbose_file_reads,
future_incompatible,
nonstandard_style,
rust_2018_idioms
)]
// END - Embark standard lints v0.3
// crate-specific exceptions:
#![allow(unsafe_code)]
mod xcframework;
#[cfg(any(target_os = "macos", target_os = "ios"))]
mod mac {
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use std::path::Path;
// MoltenVK git tagged release to use
pub static MOLTEN_VK_VERSION: &str = "1.1.2";
pub static MOLTEN_VK_PATCH: Option<&str> = Some("f28ab1c");
// Return the artifact tag in the form of "x.x.x" or if there is a patch specified "x.x.x#yyyyyyy"
pub(crate) fn get_artifact_tag() -> String {
if let Some(patch) = MOLTEN_VK_PATCH {
format!("{}#{}", MOLTEN_VK_VERSION, patch)
} else {
MOLTEN_VK_VERSION.to_owned()
}
}
// Features are not used inside build scripts, so we have to explicitly query them from the
// enviroment
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pub(crate) fn is_feature_enabled(feature: &str) -> bool {
std::env::vars()
.filter_map(|(flag, _)| {
const NAME: &str = "CARGO_FEATURE_";
if flag.starts_with(NAME) {
let feature = flag.split(NAME).nth(1).expect("").to_string();
println!("{:?}", feature);
return Some(feature);
}
None
})
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.any(|f| f == feature)
}
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pub(crate) fn build_molten<P: AsRef<Path>>(_target_dir: &P) -> &'static str {
use std::{
process::Command,
sync::{
atomic::{AtomicBool, Ordering},
Arc,
},
};
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let checkout_dir = Path::new(&std::env::var("OUT_DIR").expect("Couldn't find OUT_DIR"))
.join(format!("MoltenVK-{}", get_artifact_tag()));
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let exit = Arc::new(AtomicBool::new(false));
let wants_exit = exit.clone();
// Periodically emit log messages so that Travis doesn't make a sad
let handle = std::thread::spawn(move || {
let mut counter = 0;
while !wants_exit.load(Ordering::Acquire) {
std::thread::sleep(std::time::Duration::from_millis(100));
counter += 100;
if counter >= 30 * 1000 {
counter = 0;
println!("still building MoltenVK");
}
}
});
if Path::new(&checkout_dir).exists() {
// Don't pull if a specific hash has been checkedout
if MOLTEN_VK_PATCH.is_none() {
let git_status = Command::new("git")
.current_dir(&checkout_dir)
.arg("pull")
.spawn()
.expect("failed to spawn git")
.wait()
.expect("failed to pull MoltenVK");
assert!(git_status.success(), "failed to get MoltenVK");
}
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} else {
let branch = format!("v{}", MOLTEN_VK_VERSION.to_owned());
let clone_args = if MOLTEN_VK_PATCH.is_none() {
vec!["--branch", branch.as_str(), "--depth", "1"]
} else {
vec!["--single-branch", "--branch", "master"] // Can't specify depth if you switch to a different commit hash later.
};
let git_status = Command::new("git")
.arg("clone")
.args(clone_args)
.arg("https://github.com/KhronosGroup/MoltenVK.git")
.arg(&checkout_dir)
.spawn()
.expect("failed to spawn git")
.wait()
.expect("failed to clone MoltenVK");
assert!(git_status.success(), "failed to get MoltenVK");
};
if let Some(patch) = MOLTEN_VK_PATCH {
let git_status = Command::new("git")
.current_dir(&checkout_dir)
.arg("checkout")
.arg(patch)
.status()
.expect("failed to spawn git");
assert!(git_status.success(), "failed to checkout patch");
}
// These (currently) match the identifiers used by moltenvk
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let (target_name, _dir) = match std::env::var("CARGO_CFG_TARGET_OS") {
Ok(target) => match target.as_ref() {
"macos" => ("macos", "macOS"),
"ios" => ("ios", "iOS"),
target => panic!("unknown target '{}'", target),
},
Err(e) => panic!("failed to determinte target os '{}'", e),
};
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let status = Command::new("sh")
.current_dir(&checkout_dir)
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.arg("fetchDependencies")
.arg(format!("--{}", target_name))
.spawn()
.expect("failed to spawn fetchDependencies")
.wait()
.expect("failed to fetchDependencies");
assert!(status.success(), "failed to fetchDependencies");
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let status = Command::new("make")
.current_dir(&checkout_dir)
.arg(target_name)
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.spawn()
.expect("failed to build MoltenVK")
.wait()
.expect("failed to build MoltenVK");
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assert!(status.success(), "failed to build MoltenVK");
exit.store(true, Ordering::Release);
handle.join().unwrap();
target_name
}
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pub(crate) fn download_prebuilt_molten<P: AsRef<Path>>(target_dir: &P) {
use std::process::{Command, Stdio};
std::fs::create_dir_all(&target_dir).expect("Couldn't create directory");
let previous_path = std::env::current_dir().expect("Couldn't get current directory");
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std::env::set_current_dir(&target_dir).expect("Couldn't change current directory");
let curl = Command::new("curl")
.arg("-s")
.arg(format!(
"https://api.github.com/repos/EmbarkStudios/ash-molten/releases/tags/MoltenVK-{}",
get_artifact_tag().replace("#", "%23")
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))
.stdout(Stdio::piped())
.spawn()
.expect("Couldn't launch curl");
let curl_out = curl.stdout.expect("Failed to open curl stdout");
let grep = Command::new("grep")
.arg("browser_download_url.*zip")
.stdin(Stdio::from(curl_out))
.stdout(Stdio::piped())
.spawn()
.expect("Couldn't launch grep");
let grep_out = grep.stdout.expect("Failed to open grep stdout");
let cut = Command::new("cut")
.args(&["-d", ":", "-f", "2,3"])
.stdin(Stdio::from(grep_out))
.stdout(Stdio::piped())
.spawn()
.expect("Couldn't launch cut");
let cut_out = cut.stdout.expect("Failed to open grep stdout");
let tr = Command::new("tr")
.args(&["-d", "\""])
.stdin(Stdio::from(cut_out))
.stdout(Stdio::piped())
.spawn()
.expect("Couldn't launch tr");
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let tr_out = tr.stdout.expect("Failed to open grep stdout");
let output = Command::new("xargs")
.args(&["-n", "1", "curl", "-LO", "--silent"])
.stdin(Stdio::from(tr_out))
.stdout(Stdio::piped())
.spawn()
.expect("Couldn't launch xargs")
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.wait_with_output()
.expect("failed to wait on xargs");
assert!(output.status.success());
for path in std::fs::read_dir(&target_dir).expect("Couldn't read dir") {
let path = path.unwrap().path();
if let Some("zip") = path.extension().and_then(std::ffi::OsStr::to_str) {
let status = Command::new("unzip")
.arg("-o")
.arg(path.to_owned())
.arg("-x")
.arg("__MACOSX/*")
.spawn()
.expect("Couldn't launch unzip")
.wait()
.expect("failed to wait on unzip");
assert!(status.success());
}
}
std::env::set_current_dir(&previous_path).expect("Couldn't change current directory");
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}
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}
use std::{
collections::{hash_map::RandomState, HashMap},
path::{Path, PathBuf},
};
#[cfg(any(target_os = "macos", target_os = "ios"))]
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fn main() {
use crate::mac::*;
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// The 'external' feature was not enabled. Molten will be built automaticaly.
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let external_enabled = is_feature_enabled("EXTERNAL");
let pre_built_enabled = is_feature_enabled("PRE_BUILT");
let target_os = std::env::var("CARGO_CFG_TARGET_OS").unwrap();
let target_arch = std::env::var("CARGO_CFG_TARGET_ARCH").unwrap();
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assert!(
!(external_enabled && pre_built_enabled),
"external and prebuild cannot be active at the same time"
);
if !external_enabled {
let mut project_dir = if pre_built_enabled {
let target_dir = Path::new(&std::env::var("OUT_DIR").unwrap()).join(format!(
"Prebuilt-MoltenVK-{}",
crate::mac::get_artifact_tag()
));
download_prebuilt_molten(&target_dir);
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let mut pb = PathBuf::from(
std::env::var("CARGO_MANIFEST_DIR").expect("unable to find env:CARGO_MANIFEST_DIR"),
);
pb.push(target_dir);
pb.push("MoltenVK.xcframework");
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pb
} else {
let target_dir = Path::new(&std::env::var("OUT_DIR").unwrap())
.join(format!("MoltenVK-{}", crate::mac::get_artifact_tag()));
let _target_name = build_molten(&target_dir);
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let mut pb = PathBuf::from(
std::env::var("CARGO_MANIFEST_DIR").expect("unable to find env:CARGO_MANIFEST_DIR"),
);
pb.push(target_dir);
pb.push("Package/Latest/MoltenVK/MoltenVK.xcframework");
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pb
};
let xcframework =
xcframework::XcFramework::parse(&project_dir).expect("Failed to parse XCFramework");
let native_libs = xcframework
.AvailableLibraries
.into_iter()
.flat_map(|lib| {
lib.universal_to_native(project_dir.clone())
.expect("Failed to get native library")
})
.map(|lib| (lib.identifier(), lib.path()))
.collect::<HashMap<xcframework::Identifier, PathBuf, RandomState>>();
let id = xcframework::Identifier::new(
target_arch.into(),
target_os.into(),
xcframework::Variant::Default,
);
let lib_path = native_libs.get(&id).expect("Library was not found");
let lib_dir = lib_path.parent().unwrap();
project_dir.push(lib_dir);
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println!("cargo:rustc-link-search=native={}", project_dir.display());
}
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println!("cargo:rustc-link-lib=framework=Metal");
println!("cargo:rustc-link-lib=framework=AppKit");
println!("cargo:rustc-link-lib=framework=QuartzCore");
println!("cargo:rustc-link-lib=framework=IOKit");
println!("cargo:rustc-link-lib=framework=IOSurface");
println!("cargo:rustc-link-lib=dylib=c++");
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println!("cargo:rustc-link-lib=static=MoltenVK");
}
#[cfg(not(any(target_os = "macos", target_os = "ios")))]
fn main() {
eprintln!("ash-molten requires either 'macos' or 'ios' target");
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}