85 lines
3 KiB
Rust
85 lines
3 KiB
Rust
use std::env;
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use std::os::unix::process::CommandExt;
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use std::path::PathBuf;
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use std::process::{Command, Stdio};
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fn main() {
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if env::var("RUSTC_WRAPPER").map_or(false, |wrapper| wrapper.contains("sccache")) {
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eprintln!(
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"\x1b[1;93m=== Warning: Unsetting RUSTC_WRAPPER to prevent interference with sccache ===\x1b[0m"
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);
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env::remove_var("RUSTC_WRAPPER");
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}
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let sysroot = PathBuf::from(env::current_exe().unwrap().parent().unwrap());
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env::set_var("RUSTC", sysroot.join("bin/cg_clif".to_string() + env::consts::EXE_SUFFIX));
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let mut rustdoc_flags = env::var("RUSTDOCFLAGS").unwrap_or(String::new());
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rustdoc_flags.push_str(" -Cpanic=abort -Zpanic-abort-tests -Zcodegen-backend=");
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rustdoc_flags.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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rustdoc_flags.push_str(" --sysroot ");
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rustdoc_flags.push_str(sysroot.to_str().unwrap());
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env::set_var("RUSTDOCFLAGS", rustdoc_flags);
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let default_sysroot = Command::new("rustc")
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.stderr(Stdio::inherit())
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.args(&["--print", "sysroot"])
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.output()
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.unwrap()
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.stdout;
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let default_sysroot = std::str::from_utf8(&default_sysroot).unwrap().trim();
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let extra_ld_lib_path =
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default_sysroot.to_string() + ":" + sysroot.join("lib").to_str().unwrap();
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if cfg!(target_os = "macos") {
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env::set_var(
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"DYLD_LIBRARY_PATH",
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env::var("DYLD_LIBRARY_PATH").unwrap_or(String::new()) + ":" + &extra_ld_lib_path,
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);
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} else if cfg!(unix) {
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env::set_var(
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"LD_LIBRARY_PATH",
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env::var("LD_LIBRARY_PATH").unwrap_or(String::new()) + ":" + &extra_ld_lib_path,
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);
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}
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// Ensure that the right toolchain is used
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env::set_var("RUSTUP_TOOLCHAIN", env!("RUSTUP_TOOLCHAIN"));
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let args: Vec<_> = match env::args().nth(1).as_deref() {
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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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std::array::IntoIter::new(["rustc".to_string()])
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.chain(env::args().skip(2))
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.chain(["--".to_string(), "-Cllvm-args=mode=jit".to_string()])
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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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std::array::IntoIter::new(["rustc".to_string()])
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.chain(env::args().skip(2))
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.chain(["--".to_string(), "-Cllvm-args=mode=jit-lazy".to_string()])
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.collect()
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}
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_ => env::args().skip(1).collect(),
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};
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Command::new("cargo").args(args).exec();
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}
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