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Merge pull request rust-lang#405 from GuillaumeGomez/rustify-cargo-sh
Rustify `cargo.sh`
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| use crate::config::ConfigInfo; | ||
| use crate::utils::{ | ||
| get_toolchain, run_command_with_output_and_env_no_err, rustc_toolchain_version_info, | ||
| rustc_version_info, | ||
| }; | ||
|
|
||
| use std::collections::HashMap; | ||
| use std::ffi::OsStr; | ||
| use std::path::PathBuf; | ||
|
|
||
| fn args() -> Result<Option<Vec<String>>, String> { | ||
| // We skip the binary and the "cargo" option. | ||
| if let Some("--help") = std::env::args().skip(2).next().as_deref() { | ||
| usage(); | ||
| return Ok(None); | ||
| } | ||
| let args = std::env::args().skip(2).collect::<Vec<_>>(); | ||
| if args.is_empty() { | ||
| return Err( | ||
| "Expected at least one argument for `cargo` subcommand, found none".to_string(), | ||
| ); | ||
| } | ||
| Ok(Some(args)) | ||
| } | ||
|
|
||
| fn usage() { | ||
| println!( | ||
| r#" | ||
| `cargo` command help: | ||
| [args] : Arguments to be passed to the cargo command | ||
| --help : Show this help | ||
| "# | ||
| ) | ||
| } | ||
|
|
||
| pub fn run() -> Result<(), String> { | ||
| let args = match args()? { | ||
| Some(a) => a, | ||
| None => return Ok(()), | ||
| }; | ||
|
|
||
| // We first need to go to the original location to ensure that the config setup will go as | ||
| // expected. | ||
| let current_dir = std::env::current_dir() | ||
| .and_then(|path| path.canonicalize()) | ||
| .map_err(|error| format!("Failed to get current directory path: {:?}", error))?; | ||
| let current_exe = std::env::current_exe() | ||
| .and_then(|path| path.canonicalize()) | ||
| .map_err(|error| format!("Failed to get current exe path: {:?}", error))?; | ||
| let mut parent_dir = current_exe | ||
| .components() | ||
| .map(|comp| comp.as_os_str()) | ||
| .collect::<Vec<_>>(); | ||
| // We run this script from "build_system/target/release/y", so we need to remove these elements. | ||
| for to_remove in &["y", "release", "target", "build_system"] { | ||
| if parent_dir | ||
| .last() | ||
| .map(|part| part == to_remove) | ||
| .unwrap_or(false) | ||
| { | ||
| parent_dir.pop(); | ||
| } else { | ||
| return Err(format!( | ||
| "Build script not executed from `build_system/target/release/y` (in path {})", | ||
| current_exe.display(), | ||
| )); | ||
| } | ||
| } | ||
| let parent_dir = PathBuf::from(parent_dir.join(&OsStr::new("/"))); | ||
| std::env::set_current_dir(&parent_dir).map_err(|error| { | ||
| format!( | ||
| "Failed to go to `{}` folder: {:?}", | ||
| parent_dir.display(), | ||
| error | ||
| ) | ||
| })?; | ||
|
|
||
| let mut env: HashMap<String, String> = std::env::vars().collect(); | ||
| ConfigInfo::default().setup(&mut env, None)?; | ||
| let toolchain = get_toolchain()?; | ||
|
|
||
| let toolchain_version = rustc_toolchain_version_info(&toolchain)?; | ||
| let default_version = rustc_version_info(None)?; | ||
| if toolchain_version != default_version { | ||
| println!( | ||
| "rustc_codegen_gcc is built for {} but the default rustc version is {}.", | ||
| toolchain_version.short, default_version.short, | ||
| ); | ||
| println!("Using {}.", toolchain_version.short); | ||
| } | ||
|
|
||
| // We go back to the original folder since we now have set up everything we needed. | ||
| std::env::set_current_dir(¤t_dir).map_err(|error| { | ||
| format!( | ||
| "Failed to go back to `{}` folder: {:?}", | ||
| current_dir.display(), | ||
| error | ||
| ) | ||
| })?; | ||
|
|
||
| let rustflags = env.get("RUSTFLAGS").cloned().unwrap_or_default(); | ||
| env.insert("RUSTDOCFLAGS".to_string(), rustflags); | ||
| let toolchain = format!("+{}", toolchain); | ||
| let mut command: Vec<&dyn AsRef<OsStr>> = vec![&"cargo", &toolchain]; | ||
| for arg in &args { | ||
| command.push(arg); | ||
| } | ||
| if run_command_with_output_and_env_no_err(&command, None, Some(&env)).is_err() { | ||
| std::process::exit(1); | ||
| } | ||
|
|
||
| Ok(()) | ||
| } |
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