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|
use std::env;
use std::path::PathBuf;
use std::process;
use self::utils::is_ci;
mod abi_cafe;
mod build_backend;
mod build_sysroot;
mod config;
mod path;
mod prepare;
mod rustc_info;
mod tests;
mod utils;
const USAGE: &str = r#"The build system of cg_clif.
USAGE:
./y.rs prepare [--out-dir DIR]
./y.rs build [--debug] [--sysroot none|clif|llvm] [--out-dir DIR] [--no-unstable-features]
./y.rs test [--debug] [--sysroot none|clif|llvm] [--out-dir DIR] [--no-unstable-features]
OPTIONS:
--sysroot none|clif|llvm
Which sysroot libraries to use:
`none` will not include any standard library in the sysroot.
`clif` will build the standard library using Cranelift.
`llvm` will use the pre-compiled standard library of rustc which is compiled with LLVM.
--out-dir DIR
Specify the directory in which the download, build and dist directories are stored.
By default this is the working directory.
--no-unstable-features
fSome features are not yet ready for production usage. This option will disable these
features. This includes the JIT mode and inline assembly support.
"#;
fn usage() {
eprintln!("{USAGE}");
}
macro_rules! arg_error {
($($err:tt)*) => {{
eprintln!($($err)*);
usage();
std::process::exit(1);
}};
}
#[derive(PartialEq, Debug)]
enum Command {
Prepare,
Build,
Test,
}
#[derive(Copy, Clone, Debug)]
pub(crate) enum SysrootKind {
None,
Clif,
Llvm,
}
pub fn main() {
env::set_var("CG_CLIF_DISPLAY_CG_TIME", "1");
env::set_var("CG_CLIF_DISABLE_INCR_CACHE", "1");
if is_ci() {
// Disabling incr comp reduces cache size and incr comp doesn't save as much on CI anyway
env::set_var("CARGO_BUILD_INCREMENTAL", "false");
}
let mut args = env::args().skip(1);
let command = match args.next().as_deref() {
Some("prepare") => Command::Prepare,
Some("build") => Command::Build,
Some("test") => Command::Test,
Some(flag) if flag.starts_with('-') => arg_error!("Expected command found flag {}", flag),
Some(command) => arg_error!("Unknown command {}", command),
None => {
usage();
process::exit(0);
}
};
let mut out_dir = PathBuf::from(".");
let mut channel = "release";
let mut sysroot_kind = SysrootKind::Clif;
let mut use_unstable_features = true;
while let Some(arg) = args.next().as_deref() {
match arg {
"--out-dir" => {
out_dir = PathBuf::from(args.next().unwrap_or_else(|| {
arg_error!("--out-dir requires argument");
}))
}
"--debug" => channel = "debug",
"--sysroot" => {
sysroot_kind = match args.next().as_deref() {
Some("none") => SysrootKind::None,
Some("clif") => SysrootKind::Clif,
Some("llvm") => SysrootKind::Llvm,
Some(arg) => arg_error!("Unknown sysroot kind {}", arg),
None => arg_error!("--sysroot requires argument"),
}
}
"--no-unstable-features" => use_unstable_features = false,
flag if flag.starts_with("-") => arg_error!("Unknown flag {}", flag),
arg => arg_error!("Unexpected argument {}", arg),
}
}
let host_triple = if let Ok(host_triple) = std::env::var("HOST_TRIPLE") {
host_triple
} else if let Some(host_triple) = config::get_value("host") {
host_triple
} else {
rustc_info::get_host_triple()
};
let target_triple = if let Ok(target_triple) = std::env::var("TARGET_TRIPLE") {
if target_triple != "" {
target_triple
} else {
host_triple.clone() // Empty target triple can happen on GHA
}
} else if let Some(target_triple) = config::get_value("target") {
target_triple
} else {
host_triple.clone()
};
// FIXME allow changing the location of these dirs using cli arguments
let current_dir = std::env::current_dir().unwrap();
out_dir = current_dir.join(out_dir);
let dirs = path::Dirs {
source_dir: current_dir.clone(),
download_dir: out_dir.join("download"),
build_dir: out_dir.join("build"),
dist_dir: out_dir.join("dist"),
};
path::RelPath::BUILD.ensure_exists(&dirs);
{
// Make sure we always explicitly specify the target dir
let target =
path::RelPath::BUILD.join("target_dir_should_be_set_explicitly").to_path(&dirs);
env::set_var("CARGO_TARGET_DIR", &target);
let _ = std::fs::remove_file(&target);
std::fs::File::create(target).unwrap();
}
if command == Command::Prepare {
prepare::prepare(&dirs);
process::exit(0);
}
let cg_clif_dylib =
build_backend::build_backend(&dirs, channel, &host_triple, use_unstable_features);
match command {
Command::Prepare => {
// Handled above
}
Command::Test => {
tests::run_tests(
&dirs,
channel,
sysroot_kind,
&cg_clif_dylib,
&host_triple,
&target_triple,
);
abi_cafe::run(
channel,
sysroot_kind,
&dirs,
&cg_clif_dylib,
&host_triple,
&target_triple,
);
}
Command::Build => {
build_sysroot::build_sysroot(
&dirs,
channel,
sysroot_kind,
&cg_clif_dylib,
&host_triple,
&target_triple,
);
}
}
}
|
