92 lines
3.1 KiB
Rust
92 lines
3.1 KiB
Rust
use std::env;
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#[cfg(unix)]
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use std::os::unix::process::CommandExt;
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use std::process::Command;
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fn main() {
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let current_exe = env::current_exe().unwrap();
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let mut sysroot = current_exe.parent().unwrap();
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if sysroot.file_name().unwrap().to_str().unwrap() == "bin" {
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sysroot = sysroot.parent().unwrap();
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}
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let mut rustflags = String::new();
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rustflags.push_str(" -Cpanic=abort -Zpanic-abort-tests -Zcodegen-backend=");
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if let Some(name) = option_env!("BUILTIN_BACKEND") {
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rustflags.push_str(name);
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} else {
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rustflags.push_str(
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sysroot
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.join(if cfg!(windows) { "bin" } else { "lib" })
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.join(
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env::consts::DLL_PREFIX.to_string()
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+ "rustc_codegen_cranelift"
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+ env::consts::DLL_SUFFIX,
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)
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.to_str()
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.unwrap(),
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);
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}
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rustflags.push_str(" --sysroot ");
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rustflags.push_str(sysroot.to_str().unwrap());
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env::set_var("RUSTFLAGS", env::var("RUSTFLAGS").unwrap_or(String::new()) + &rustflags);
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env::set_var("RUSTDOCFLAGS", env::var("RUSTDOCFLAGS").unwrap_or(String::new()) + &rustflags);
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let cargo = if let Some(cargo) = option_env!("CARGO") {
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cargo
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} else {
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// Ensure that the right toolchain is used
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env::set_var("RUSTUP_TOOLCHAIN", option_env!("TOOLCHAIN_NAME").expect("TOOLCHAIN_NAME"));
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"cargo"
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};
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let mut args = env::args().skip(1).collect::<Vec<_>>();
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if args.get(0).map(|arg| &**arg) == Some("clif") {
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// Avoid infinite recursion when invoking `cargo-clif` as cargo subcommand using
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// `cargo clif`.
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args.remove(0);
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}
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let args: Vec<_> = match args.get(0).map(|arg| &**arg) {
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Some("jit") => {
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env::set_var(
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"RUSTFLAGS",
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env::var("RUSTFLAGS").unwrap_or(String::new()) + " -Cprefer-dynamic",
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);
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args.remove(0);
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IntoIterator::into_iter(["rustc".to_string()])
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.chain(args)
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.chain([
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"--".to_string(),
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"-Zunstable-options".to_string(),
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"-Cllvm-args=mode=jit".to_string(),
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])
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.collect()
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}
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Some("lazy-jit") => {
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env::set_var(
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"RUSTFLAGS",
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env::var("RUSTFLAGS").unwrap_or(String::new()) + " -Cprefer-dynamic",
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);
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args.remove(0);
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IntoIterator::into_iter(["rustc".to_string()])
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.chain(args)
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.chain([
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"--".to_string(),
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"-Zunstable-options".to_string(),
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"-Cllvm-args=mode=jit-lazy".to_string(),
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])
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.collect()
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}
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_ => args,
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};
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#[cfg(unix)]
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panic!("Failed to spawn cargo: {}", Command::new(cargo).args(args).exec());
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#[cfg(not(unix))]
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std::process::exit(
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Command::new(cargo).args(args).spawn().unwrap().wait().unwrap().code().unwrap_or(1),
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);
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}
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