148 lines
4.2 KiB
Bash
Executable File
148 lines
4.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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#![allow()] /*This line is ignored by bash
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# This block is ignored by rustc
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set -e
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echo "[BUILD] y.rs" 1>&2
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rustc $0 -o ${0/.rs/.bin} -g
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exec ${0/.rs/.bin} $@
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*/
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//! The build system for cg_clif
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//!
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//! # Manual compilation
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//!
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//! If your system doesn't support shell scripts you can manually compile and run this file using
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//! for example:
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//!
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//! ```shell
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//! $ rustc y.rs -o build/y.bin
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//! $ build/y.bin
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//! ```
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//!
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//! # Naming
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//!
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//! The name `y.rs` was chosen to not conflict with rustc's `x.py`.
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use std::env;
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use std::path::PathBuf;
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use std::process;
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#[path = "build_system/build_backend.rs"]
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mod build_backend;
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#[path = "build_system/build_sysroot.rs"]
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mod build_sysroot;
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#[path = "build_system/prepare.rs"]
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mod prepare;
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#[path = "build_system/rustc_info.rs"]
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mod rustc_info;
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#[path = "build_system/utils.rs"]
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mod utils;
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fn usage() {
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eprintln!("Usage:");
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eprintln!(" ./y.rs prepare");
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eprintln!(" ./y.rs build [--debug] [--sysroot none|clif|llvm] [--target-dir DIR]");
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}
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macro_rules! arg_error {
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($($err:tt)*) => {{
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eprintln!($($err)*);
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usage();
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std::process::exit(1);
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}};
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}
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enum Command {
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Build,
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}
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#[derive(Copy, Clone)]
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enum SysrootKind {
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None,
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Clif,
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Llvm,
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}
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fn main() {
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env::set_var("CG_CLIF_DISPLAY_CG_TIME", "1");
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env::set_var("CG_CLIF_DISABLE_INCR_CACHE", "1");
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// The target dir is expected in the default location. Guard against the user changing it.
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env::set_var("CARGO_TARGET_DIR", "target");
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let mut args = env::args().skip(1);
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let command = match args.next().as_deref() {
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Some("prepare") => {
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if args.next().is_some() {
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arg_error!("./x.rs prepare doesn't expect arguments");
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}
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prepare::prepare();
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process::exit(0);
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}
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Some("build") => Command::Build,
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Some(flag) if flag.starts_with('-') => arg_error!("Expected command found flag {}", flag),
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Some(command) => arg_error!("Unknown command {}", command),
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None => {
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usage();
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process::exit(0);
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}
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};
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let mut target_dir = PathBuf::from("build");
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let mut channel = "release";
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let mut sysroot_kind = SysrootKind::Clif;
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while let Some(arg) = args.next().as_deref() {
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match arg {
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"--target-dir" => {
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target_dir = PathBuf::from(args.next().unwrap_or_else(|| {
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arg_error!("--target-dir requires argument");
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}))
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}
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"--debug" => channel = "debug",
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"--sysroot" => {
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sysroot_kind = match args.next().as_deref() {
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Some("none") => SysrootKind::None,
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Some("clif") => SysrootKind::Clif,
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Some("llvm") => SysrootKind::Llvm,
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Some(arg) => arg_error!("Unknown sysroot kind {}", arg),
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None => arg_error!("--sysroot requires argument"),
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}
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}
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flag if flag.starts_with("-") => arg_error!("Unknown flag {}", flag),
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arg => arg_error!("Unexpected argument {}", arg),
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}
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}
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let host_triple = if let Ok(host_triple) = std::env::var("HOST_TRIPLE") {
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host_triple
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} else {
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rustc_info::get_host_triple()
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};
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let target_triple = if let Ok(target_triple) = std::env::var("TARGET_TRIPLE") {
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if target_triple != "" {
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target_triple
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} else {
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host_triple.clone() // Empty target triple can happen on GHA
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}
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} else {
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host_triple.clone()
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};
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if target_triple.ends_with("-msvc") {
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eprintln!("The MSVC toolchain is not yet supported by rustc_codegen_cranelift.");
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eprintln!("Switch to the MinGW toolchain for Windows support.");
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eprintln!("Hint: You can use `rustup set default-host x86_64-pc-windows-gnu` to");
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eprintln!("set the global default target to MinGW");
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process::exit(1);
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}
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let cg_clif_dylib = build_backend::build_backend(channel);
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build_sysroot::build_sysroot(
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channel,
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sysroot_kind,
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&target_dir,
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cg_clif_dylib,
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&host_triple,
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&target_triple,
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);
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}
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