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|
use crate::config::{set_config, ConfigInfo};
use crate::utils::{
get_gcc_path, run_command, run_command_with_output_and_env, walk_dir,
};
use std::collections::HashMap;
use std::ffi::OsStr;
use std::fs;
use std::path::Path;
#[derive(Default)]
struct BuildArg {
codegen_release_channel: bool,
sysroot_release_channel: bool,
sysroot_panic_abort: bool,
flags: Vec<String>,
gcc_path: String,
}
impl BuildArg {
fn new() -> Result<Option<Self>, String> {
let gcc_path = get_gcc_path()?;
let mut build_arg = Self {
gcc_path,
..Default::default()
};
// We skip binary name and the `build` command.
let mut args = std::env::args().skip(2);
while let Some(arg) = args.next() {
match arg.as_str() {
"--release" => build_arg.codegen_release_channel = true,
"--release-sysroot" => build_arg.sysroot_release_channel = true,
"--no-default-features" => {
build_arg.flags.push("--no-default-features".to_string());
}
"--sysroot-panic-abort" => {
build_arg.sysroot_panic_abort = true;
},
"--features" => {
if let Some(arg) = args.next() {
build_arg.flags.push("--features".to_string());
build_arg.flags.push(arg.as_str().into());
} else {
return Err(
"Expected a value after `--features`, found nothing".to_string()
);
}
}
"--help" => {
Self::usage();
return Ok(None);
}
"--target-triple" => {
if args.next().is_some() {
// Handled in config.rs.
} else {
return Err(
"Expected a value after `--target-triple`, found nothing".to_string()
);
}
}
"--target" => {
if args.next().is_some() {
// Handled in config.rs.
} else {
return Err(
"Expected a value after `--target`, found nothing".to_string()
);
}
}
arg => return Err(format!("Unknown argument `{}`", arg)),
}
}
Ok(Some(build_arg))
}
fn usage() {
println!(
r#"
`build` command help:
--release : Build codegen in release mode
--release-sysroot : Build sysroot in release mode
--sysroot-panic-abort : Build the sysroot without unwinding support.
--no-default-features : Add `--no-default-features` flag
--features [arg] : Add a new feature [arg]
--target-triple [arg] : Set the target triple to [arg]
--help : Show this help
"#
)
}
}
fn build_sysroot(
env: &mut HashMap<String, String>,
args: &BuildArg,
config: &ConfigInfo,
) -> Result<(), String> {
std::env::set_current_dir("build_sysroot")
.map_err(|error| format!("Failed to go to `build_sysroot` directory: {:?}", error))?;
// Cleanup for previous run
// Clean target dir except for build scripts and incremental cache
let _ = walk_dir(
"target",
|dir: &Path| {
for top in &["debug", "release"] {
let _ = fs::remove_dir_all(dir.join(top).join("build"));
let _ = fs::remove_dir_all(dir.join(top).join("deps"));
let _ = fs::remove_dir_all(dir.join(top).join("examples"));
let _ = fs::remove_dir_all(dir.join(top).join("native"));
let _ = walk_dir(
dir.join(top),
|sub_dir: &Path| {
if sub_dir
.file_name()
.map(|filename| filename.to_str().unwrap().starts_with("libsysroot"))
.unwrap_or(false)
{
let _ = fs::remove_dir_all(sub_dir);
}
Ok(())
},
|file: &Path| {
if file
.file_name()
.map(|filename| filename.to_str().unwrap().starts_with("libsysroot"))
.unwrap_or(false)
{
let _ = fs::remove_file(file);
}
Ok(())
},
);
}
Ok(())
},
|_| Ok(()),
);
let _ = fs::remove_file("Cargo.lock");
let _ = fs::remove_file("test_target/Cargo.lock");
let _ = fs::remove_dir_all("sysroot");
// Builds libs
let mut rustflags = env
.get("RUSTFLAGS")
.cloned()
.unwrap_or_default();
if args.sysroot_panic_abort {
rustflags.push_str(" -Cpanic=abort -Zpanic-abort-tests");
}
env.insert(
"RUSTFLAGS".to_string(),
format!("{} -Zmir-opt-level=3", rustflags),
);
let channel = if args.sysroot_release_channel {
run_command_with_output_and_env(
&[
&"cargo",
&"build",
&"--target",
&config.target,
&"--release",
],
None,
Some(&env),
)?;
"release"
} else {
run_command_with_output_and_env(
&[
&"cargo",
&"build",
&"--target",
&config.target,
],
None,
Some(env),
)?;
"debug"
};
// Copy files to sysroot
let sysroot_path = format!("sysroot/lib/rustlib/{}/lib/", config.target_triple);
fs::create_dir_all(&sysroot_path)
.map_err(|error| format!("Failed to create directory `{}`: {:?}", sysroot_path, error))?;
let copier = |dir_to_copy: &Path| {
run_command(&[&"cp", &"-r", &dir_to_copy, &sysroot_path], None).map(|_| ())
};
walk_dir(
&format!("target/{}/{}/deps", config.target_triple, channel),
copier,
copier,
)?;
// Copy the source files to the sysroot (Rust for Linux needs this).
let sysroot_src_path = "sysroot/lib/rustlib/src/rust";
fs::create_dir_all(&sysroot_src_path)
.map_err(|error| format!("Failed to create directory `{}`: {:?}", sysroot_src_path, error))?;
run_command(&[&"cp", &"-r", &"sysroot_src/library/", &sysroot_src_path], None)?;
Ok(())
}
fn build_codegen(args: &BuildArg) -> Result<(), String> {
let mut env = HashMap::new();
env.insert("LD_LIBRARY_PATH".to_string(), args.gcc_path.clone());
env.insert("LIBRARY_PATH".to_string(), args.gcc_path.clone());
let mut command: Vec<&dyn AsRef<OsStr>> = vec![&"cargo", &"rustc"];
if args.codegen_release_channel {
command.push(&"--release");
env.insert("CHANNEL".to_string(), "release".to_string());
env.insert("CARGO_INCREMENTAL".to_string(), "1".to_string());
} else {
env.insert("CHANNEL".to_string(), "debug".to_string());
}
let flags = args.flags.iter().map(|s| s.as_str()).collect::<Vec<_>>();
for flag in &flags {
command.push(flag);
}
run_command_with_output_and_env(&command, None, Some(&env))?;
let config = set_config(&mut env, &[], Some(&args.gcc_path))?;
// We voluntarily ignore the error.
let _ = fs::remove_dir_all("target/out");
let gccjit_target = "target/out/gccjit";
fs::create_dir_all(gccjit_target).map_err(|error| {
format!(
"Failed to create directory `{}`: {:?}",
gccjit_target, error
)
})?;
println!("[BUILD] sysroot");
build_sysroot(
&mut env,
args,
&config,
)?;
Ok(())
}
pub fn run() -> Result<(), String> {
let args = match BuildArg::new()? {
Some(args) => args,
None => return Ok(()),
};
build_codegen(&args)?;
Ok(())
}
|