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use std::env;
#[cfg(unix)]
use std::os::unix::process::CommandExt;
use std::process::Command;
fn main() {
let current_exe = env::current_exe().unwrap();
let mut sysroot = current_exe.parent().unwrap();
if sysroot.file_name().unwrap().to_str().unwrap() == "bin" {
sysroot = sysroot.parent().unwrap();
}
let mut rustflags = String::new();
rustflags.push_str(" -Cpanic=abort -Zpanic-abort-tests -Zcodegen-backend=");
if let Some(name) = option_env!("BUILTIN_BACKEND") {
rustflags.push_str(name);
} else {
rustflags.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(),
);
}
rustflags.push_str(" --sysroot ");
rustflags.push_str(sysroot.to_str().unwrap());
env::set_var("RUSTFLAGS", env::var("RUSTFLAGS").unwrap_or(String::new()) + &rustflags);
env::set_var("RUSTDOCFLAGS", env::var("RUSTDOCFLAGS").unwrap_or(String::new()) + &rustflags);
let cargo = if let Some(cargo) = option_env!("CARGO") {
cargo
} else {
// Ensure that the right toolchain is used
env::set_var("RUSTUP_TOOLCHAIN", option_env!("TOOLCHAIN_NAME").expect("TOOLCHAIN_NAME"));
"cargo"
};
let mut args = env::args().skip(1).collect::<Vec<_>>();
if args.get(0).map(|arg| &**arg) == Some("clif") {
// Avoid infinite recursion when invoking `cargo-clif` as cargo subcommand using
// `cargo clif`.
args.remove(0);
}
let args: Vec<_> = match args.get(0).map(|arg| &**arg) {
Some("jit") => {
env::set_var(
"RUSTFLAGS",
env::var("RUSTFLAGS").unwrap_or(String::new()) + " -Cprefer-dynamic",
);
args.remove(0);
IntoIterator::into_iter(["rustc".to_string()])
.chain(args)
.chain([
"--".to_string(),
"-Zunstable-options".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",
);
args.remove(0);
IntoIterator::into_iter(["rustc".to_string()])
.chain(args)
.chain([
"--".to_string(),
"-Zunstable-options".to_string(),
"-Cllvm-args=mode=jit-lazy".to_string(),
])
.collect()
}
_ => args,
};
#[cfg(unix)]
panic!("Failed to spawn cargo: {}", 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),
);
}
|
