bjoernager/rust
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Merge commit 'b385428e3d' into subtree-update_cg_gcc_2024-03-05

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This commit is contained in:
Guillaume Gomez 2024-03-05 19:58:36 +01:00
commit 0d359efbe6
76 changed files with 7183 additions and 4278 deletions
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196
compiler/rustc_codegen_gcc/build_system/src/build.rs
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@ -1,7 +1,5 @@
use crate::config::{set_config, ConfigInfo};
use crate::utils::{
get_gcc_path, run_command, run_command_with_output_and_env, walk_dir,
};
use crate::config::{Channel, ConfigInfo};
use crate::utils::{run_command, run_command_with_output_and_env, walk_dir};
use std::collections::HashMap;
use std::ffi::OsStr;
use std::fs;
@ -9,33 +7,18 @@ 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,
config_info: ConfigInfo,
}
impl BuildArg {
fn new() -> Result<Option<Self>, String> {
let gcc_path = get_gcc_path()?;
let mut build_arg = Self {
gcc_path,
..Default::default()
};
let mut build_arg = Self::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());
@ -50,25 +33,11 @@ impl BuildArg {
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()
);
arg => {
if !build_arg.config_info.parse_argument(arg, &mut args)? {
return Err(format!("Unknown argument `{}`", arg));
}
}
"--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))
@ -79,29 +48,19 @@ impl BuildArg {
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
"#
)
--features [arg] : Add a new feature [arg]"#
);
ConfigInfo::show_usage();
println!(" --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))?;
pub fn build_sysroot(env: &HashMap<String, String>, config: &ConfigInfo) -> Result<(), String> {
let start_dir = Path::new("build_sysroot");
// Cleanup for previous run
// Clean target dir except for build scripts and incremental cache
let _ = walk_dir(
"target",
start_dir.join("target"),
|dir: &Path| {
for top in &["debug", "release"] {
let _ = fs::remove_dir_all(dir.join(top).join("build"));
@ -138,92 +97,114 @@ fn build_sysroot(
|_| Ok(()),
);
let _ = fs::remove_file("Cargo.lock");
let _ = fs::remove_file("test_target/Cargo.lock");
let _ = fs::remove_dir_all("sysroot");
let _ = fs::remove_file(start_dir.join("Cargo.lock"));
let _ = fs::remove_file(start_dir.join("test_target/Cargo.lock"));
let _ = fs::remove_dir_all(start_dir.join("sysroot"));
// Builds libs
let mut rustflags = env
.get("RUSTFLAGS")
.cloned()
.unwrap_or_default();
if args.sysroot_panic_abort {
let mut rustflags = env.get("RUSTFLAGS").cloned().unwrap_or_default();
if config.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),
)?;
rustflags.push_str(" -Z force-unstable-if-unmarked");
let mut env = env.clone();
let mut args: Vec<&dyn AsRef<OsStr>> = vec![&"cargo", &"build", &"--target", &config.target];
if config.no_default_features {
rustflags.push_str(" -Csymbol-mangling-version=v0");
args.push(&"--no-default-features");
}
let channel = if config.sysroot_release_channel {
rustflags.push_str(" -Zmir-opt-level=3");
args.push(&"--release");
"release"
} else {
run_command_with_output_and_env(
&[
&"cargo",
&"build",
&"--target",
&config.target,
],
None,
Some(env),
)?;
"debug"
};
env.insert("RUSTFLAGS".to_string(), rustflags);
run_command_with_output_and_env(&args, Some(start_dir), Some(&env))?;
// 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 sysroot_path = start_dir.join(format!("sysroot/lib/rustlib/{}/lib/", config.target_triple));
fs::create_dir_all(&sysroot_path).map_err(|error| {
format!(
"Failed to create directory `{}`: {:?}",
sysroot_path.display(),
error
)
})?;
let copier = |dir_to_copy: &Path| {
// FIXME: should not use shell command!
run_command(&[&"cp", &"-r", &dir_to_copy, &sysroot_path], None).map(|_| ())
};
walk_dir(
&format!("target/{}/{}/deps", config.target_triple, channel),
start_dir.join(&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)?;
let sysroot_src_path = start_dir.join("sysroot/lib/rustlib/src/rust");
fs::create_dir_all(&sysroot_src_path).map_err(|error| {
format!(
"Failed to create directory `{}`: {:?}",
sysroot_src_path.display(),
error
)
})?;
run_command(
&[
&"cp",
&"-r",
&start_dir.join("sysroot_src/library/"),
&sysroot_src_path,
],
None,
)?;
Ok(())
}
fn build_codegen(args: &BuildArg) -> Result<(), String> {
fn build_codegen(args: &mut 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());
env.insert(
"LD_LIBRARY_PATH".to_string(),
args.config_info.gcc_path.clone(),
);
env.insert(
"LIBRARY_PATH".to_string(),
args.config_info.gcc_path.clone(),
);
if args.config_info.no_default_features {
env.insert(
"RUSTFLAGS".to_string(),
"-Csymbol-mangling-version=v0".to_string(),
);
}
let mut command: Vec<&dyn AsRef<OsStr>> = vec![&"cargo", &"rustc"];
if args.codegen_release_channel {
if args.config_info.channel == Channel::Release {
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());
}
if args.config_info.no_default_features {
command.push(&"--no-default-features");
}
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))?;
args.config_info.setup(&mut env, false)?;
// We voluntarily ignore the error.
let _ = fs::remove_dir_all("target/out");
@ -236,19 +217,16 @@ fn build_codegen(args: &BuildArg) -> Result<(), String> {
})?;
println!("[BUILD] sysroot");
build_sysroot(
&mut env,
args,
&config,
)?;
build_sysroot(&env, &args.config_info)?;
Ok(())
}
pub fn run() -> Result<(), String> {
let args = match BuildArg::new()? {
let mut args = match BuildArg::new()? {
Some(args) => args,
None => return Ok(()),
};
build_codegen(&args)?;
args.config_info.setup_gcc_path()?;
build_codegen(&mut args)?;
Ok(())
}