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use std::env;
#[cfg(unix)]
use std::os::unix::process::CommandExt;
use std::path::PathBuf;
use std::process::Command;
fn main() {
if env::var("RUSTC_WRAPPER").map_or(false, |wrapper| wrapper.contains("sccache")) {
eprintln!(
"\x1b[1;93m=== Warning: Unsetting RUSTC_WRAPPER to prevent interference with sccache ===\x1b[0m"
);
env::remove_var("RUSTC_WRAPPER");
}
let sysroot = PathBuf::from(env::current_exe().unwrap().parent().unwrap());
env::set_var("RUSTC", sysroot.join("bin/cg_clif".to_string() + env::consts::EXE_SUFFIX));
let mut rustdoc_flags = env::var("RUSTDOCFLAGS").unwrap_or(String::new());
rustdoc_flags.push_str(" -Cpanic=abort -Zpanic-abort-tests -Zcodegen-backend=");
rustdoc_flags.push_str(
sysroot
.join(if cfg!(windows) { "bin" } else { "lib" })
.join(
env::consts::DLL_PREFIX.to_string()
+ "rustc_codegen_cranelift"
+ env::consts::DLL_SUFFIX,
)
.to_str()
.unwrap(),
);
rustdoc_flags.push_str(" --sysroot ");
rustdoc_flags.push_str(sysroot.to_str().unwrap());
env::set_var("RUSTDOCFLAGS", rustdoc_flags);
// Ensure that the right toolchain is used
env::set_var("RUSTUP_TOOLCHAIN", env!("RUSTUP_TOOLCHAIN"));
let args: Vec<_> = match env::args().nth(1).as_deref() {
Some("jit") => {
env::set_var(
"RUSTFLAGS",
env::var("RUSTFLAGS").unwrap_or(String::new()) + " -Cprefer-dynamic",
);
std::array::IntoIter::new(["rustc".to_string()])
.chain(env::args().skip(2))
.chain(["--".to_string(), "-Cllvm-args=mode=jit".to_string()])
.collect()
}
Some("lazy-jit") => {
env::set_var(
"RUSTFLAGS",
env::var("RUSTFLAGS").unwrap_or(String::new()) + " -Cprefer-dynamic",
);
std::array::IntoIter::new(["rustc".to_string()])
.chain(env::args().skip(2))
.chain(["--".to_string(), "-Cllvm-args=mode=jit-lazy".to_string()])
.collect()
}
_ => env::args().skip(1).collect(),
};
#[cfg(unix)]
Command::new("cargo").args(args).exec();
#[cfg(not(unix))]
std::process::exit(
Command::new("cargo").args(args).spawn().unwrap().wait().unwrap().code().unwrap_or(1),
);
}
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