| //! Command-line interface of the rustbuild build system. |
| //! |
| //! This module implements the command-line parsing of the build system which |
| //! has various flags to configure how it's run. |
| |
| use std::fs; |
| use std::path::PathBuf; |
| use std::process; |
| |
| use getopts::Options; |
| |
| use crate::builder::Builder; |
| use crate::config::Config; |
| use crate::metadata; |
| use crate::{Build, DocTests}; |
| |
| use crate::cache::{Interned, INTERNER}; |
| |
| /// Deserialized version of all flags for this compile. |
| pub struct Flags { |
| pub verbose: usize, // number of -v args; each extra -v after the first is passed to Cargo |
| pub on_fail: Option<String>, |
| pub stage: Option<u32>, |
| pub keep_stage: Vec<u32>, |
| |
| pub host: Vec<Interned<String>>, |
| pub target: Vec<Interned<String>>, |
| pub config: Option<PathBuf>, |
| pub jobs: Option<u32>, |
| pub cmd: Subcommand, |
| pub incremental: bool, |
| pub exclude: Vec<PathBuf>, |
| pub rustc_error_format: Option<String>, |
| pub dry_run: bool, |
| |
| // This overrides the deny-warnings configuation option, |
| // which passes -Dwarnings to the compiler invocations. |
| // |
| // true => deny, false => warn |
| pub deny_warnings: Option<bool>, |
| |
| pub llvm_skip_rebuild: Option<bool>, |
| } |
| |
| pub enum Subcommand { |
| Build { |
| paths: Vec<PathBuf>, |
| }, |
| Check { |
| paths: Vec<PathBuf>, |
| }, |
| Clippy { |
| paths: Vec<PathBuf>, |
| }, |
| Fix { |
| paths: Vec<PathBuf>, |
| }, |
| Format { |
| check: bool, |
| }, |
| Doc { |
| paths: Vec<PathBuf>, |
| }, |
| Test { |
| paths: Vec<PathBuf>, |
| /// Whether to automatically update stderr/stdout files |
| bless: bool, |
| compare_mode: Option<String>, |
| pass: Option<String>, |
| test_args: Vec<String>, |
| rustc_args: Vec<String>, |
| fail_fast: bool, |
| doc_tests: DocTests, |
| rustfix_coverage: bool, |
| }, |
| Bench { |
| paths: Vec<PathBuf>, |
| test_args: Vec<String>, |
| }, |
| Clean { |
| all: bool, |
| }, |
| Dist { |
| paths: Vec<PathBuf>, |
| }, |
| Install { |
| paths: Vec<PathBuf>, |
| }, |
| } |
| |
| impl Default for Subcommand { |
| fn default() -> Subcommand { |
| Subcommand::Build { paths: vec![PathBuf::from("nowhere")] } |
| } |
| } |
| |
| impl Flags { |
| pub fn parse(args: &[String]) -> Flags { |
| let mut extra_help = String::new(); |
| let mut subcommand_help = String::from( |
| "\ |
| Usage: x.py <subcommand> [options] [<paths>...] |
| |
| Subcommands: |
| build Compile either the compiler or libraries |
| check Compile either the compiler or libraries, using cargo check |
| clippy Run clippy (uses rustup/cargo-installed clippy binary) |
| fix Run cargo fix |
| fmt Run rustfmt |
| test Build and run some test suites |
| bench Build and run some benchmarks |
| doc Build documentation |
| clean Clean out build directories |
| dist Build distribution artifacts |
| install Install distribution artifacts |
| |
| To learn more about a subcommand, run `./x.py <subcommand> -h`", |
| ); |
| |
| let mut opts = Options::new(); |
| // Options common to all subcommands |
| opts.optflagmulti("v", "verbose", "use verbose output (-vv for very verbose)"); |
| opts.optflag("i", "incremental", "use incremental compilation"); |
| opts.optopt("", "config", "TOML configuration file for build", "FILE"); |
| opts.optopt("", "build", "build target of the stage0 compiler", "BUILD"); |
| opts.optmulti("", "host", "host targets to build", "HOST"); |
| opts.optmulti("", "target", "target targets to build", "TARGET"); |
| opts.optmulti("", "exclude", "build paths to exclude", "PATH"); |
| opts.optopt("", "on-fail", "command to run on failure", "CMD"); |
| opts.optflag("", "dry-run", "dry run; don't build anything"); |
| opts.optopt( |
| "", |
| "stage", |
| "stage to build (indicates compiler to use/test, e.g., stage 0 uses the \ |
| bootstrap compiler, stage 1 the stage 0 rustc artifacts, etc.)", |
| "N", |
| ); |
| opts.optmulti( |
| "", |
| "keep-stage", |
| "stage(s) to keep without recompiling \ |
| (pass multiple times to keep e.g., both stages 0 and 1)", |
| "N", |
| ); |
| opts.optopt("", "src", "path to the root of the rust checkout", "DIR"); |
| opts.optopt("j", "jobs", "number of jobs to run in parallel", "JOBS"); |
| opts.optflag("h", "help", "print this help message"); |
| opts.optopt( |
| "", |
| "warnings", |
| "if value is deny, will deny warnings, otherwise use default", |
| "VALUE", |
| ); |
| opts.optopt("", "error-format", "rustc error format", "FORMAT"); |
| opts.optopt( |
| "", |
| "llvm-skip-rebuild", |
| "whether rebuilding llvm should be skipped \ |
| a VALUE of TRUE indicates that llvm will not be rebuilt \ |
| VALUE overrides the skip-rebuild option in config.toml.", |
| "VALUE", |
| ); |
| |
| // fn usage() |
| let usage = |
| |exit_code: i32, opts: &Options, subcommand_help: &str, extra_help: &str| -> ! { |
| println!("{}", opts.usage(subcommand_help)); |
| if !extra_help.is_empty() { |
| println!("{}", extra_help); |
| } |
| process::exit(exit_code); |
| }; |
| |
| // We can't use getopt to parse the options until we have completed specifying which |
| // options are valid, but under the current implementation, some options are conditional on |
| // the subcommand. Therefore we must manually identify the subcommand first, so that we can |
| // complete the definition of the options. Then we can use the getopt::Matches object from |
| // there on out. |
| let subcommand = args.iter().find(|&s| { |
| (s == "build") |
| || (s == "check") |
| || (s == "clippy") |
| || (s == "fix") |
| || (s == "fmt") |
| || (s == "test") |
| || (s == "bench") |
| || (s == "doc") |
| || (s == "clean") |
| || (s == "dist") |
| || (s == "install") |
| }); |
| let subcommand = match subcommand { |
| Some(s) => s, |
| None => { |
| // No or an invalid subcommand -- show the general usage and subcommand help |
| // An exit code will be 0 when no subcommand is given, and 1 in case of an invalid |
| // subcommand. |
| println!("{}\n", subcommand_help); |
| let exit_code = if args.is_empty() { 0 } else { 1 }; |
| process::exit(exit_code); |
| } |
| }; |
| |
| // Some subcommands get extra options |
| match subcommand.as_str() { |
| "test" => { |
| opts.optflag("", "no-fail-fast", "Run all tests regardless of failure"); |
| opts.optmulti("", "test-args", "extra arguments", "ARGS"); |
| opts.optmulti( |
| "", |
| "rustc-args", |
| "extra options to pass the compiler when running tests", |
| "ARGS", |
| ); |
| opts.optflag("", "no-doc", "do not run doc tests"); |
| opts.optflag("", "doc", "only run doc tests"); |
| opts.optflag("", "bless", "update all stderr/stdout files of failing ui tests"); |
| opts.optopt( |
| "", |
| "compare-mode", |
| "mode describing what file the actual ui output will be compared to", |
| "COMPARE MODE", |
| ); |
| opts.optopt( |
| "", |
| "pass", |
| "force {check,build,run}-pass tests to this mode.", |
| "check | build | run", |
| ); |
| opts.optflag( |
| "", |
| "rustfix-coverage", |
| "enable this to generate a Rustfix coverage file, which is saved in \ |
| `/<build_base>/rustfix_missing_coverage.txt`", |
| ); |
| } |
| "bench" => { |
| opts.optmulti("", "test-args", "extra arguments", "ARGS"); |
| } |
| "clean" => { |
| opts.optflag("", "all", "clean all build artifacts"); |
| } |
| "fmt" => { |
| opts.optflag("", "check", "check formatting instead of applying."); |
| } |
| _ => {} |
| }; |
| |
| // Done specifying what options are possible, so do the getopts parsing |
| let matches = opts.parse(&args[..]).unwrap_or_else(|e| { |
| // Invalid argument/option format |
| println!("\n{}\n", e); |
| usage(1, &opts, &subcommand_help, &extra_help); |
| }); |
| // Extra sanity check to make sure we didn't hit this crazy corner case: |
| // |
| // ./x.py --frobulate clean build |
| // ^-- option ^ ^- actual subcommand |
| // \_ arg to option could be mistaken as subcommand |
| let mut pass_sanity_check = true; |
| match matches.free.get(0) { |
| Some(check_subcommand) => { |
| if check_subcommand != subcommand { |
| pass_sanity_check = false; |
| } |
| } |
| None => { |
| pass_sanity_check = false; |
| } |
| } |
| if !pass_sanity_check { |
| println!("{}\n", subcommand_help); |
| println!( |
| "Sorry, I couldn't figure out which subcommand you were trying to specify.\n\ |
| You may need to move some options to after the subcommand.\n" |
| ); |
| process::exit(1); |
| } |
| // Extra help text for some commands |
| match subcommand.as_str() { |
| "build" => { |
| subcommand_help.push_str( |
| "\n |
| Arguments: |
| This subcommand accepts a number of paths to directories to the crates |
| and/or artifacts to compile. For example: |
| |
| ./x.py build src/libcore |
| ./x.py build src/libcore src/libproc_macro |
| ./x.py build src/libstd --stage 1 |
| |
| If no arguments are passed then the complete artifacts for that stage are |
| also compiled. |
| |
| ./x.py build |
| ./x.py build --stage 1 |
| |
| For a quick build of a usable compiler, you can pass: |
| |
| ./x.py build --stage 1 src/libtest |
| |
| This will first build everything once (like `--stage 0` without further |
| arguments would), and then use the compiler built in stage 0 to build |
| src/libtest and its dependencies. |
| Once this is done, build/$ARCH/stage1 contains a usable compiler.", |
| ); |
| } |
| "check" => { |
| subcommand_help.push_str( |
| "\n |
| Arguments: |
| This subcommand accepts a number of paths to directories to the crates |
| and/or artifacts to compile. For example: |
| |
| ./x.py check src/libcore |
| ./x.py check src/libcore src/libproc_macro |
| |
| If no arguments are passed then the complete artifacts are compiled: std, test, and rustc. Note |
| also that since we use `cargo check`, by default this will automatically enable incremental |
| compilation, so there's no need to pass it separately, though it won't hurt. We also completely |
| ignore the stage passed, as there's no way to compile in non-stage 0 without actually building |
| the compiler.", |
| ); |
| } |
| "clippy" => { |
| subcommand_help.push_str( |
| "\n |
| Arguments: |
| This subcommand accepts a number of paths to directories to the crates |
| and/or artifacts to run clippy against. For example: |
| |
| ./x.py clippy src/libcore |
| ./x.py clippy src/libcore src/libproc_macro", |
| ); |
| } |
| "fix" => { |
| subcommand_help.push_str( |
| "\n |
| Arguments: |
| This subcommand accepts a number of paths to directories to the crates |
| and/or artifacts to run `cargo fix` against. For example: |
| |
| ./x.py fix src/libcore |
| ./x.py fix src/libcore src/libproc_macro", |
| ); |
| } |
| "fmt" => { |
| subcommand_help.push_str( |
| "\n |
| Arguments: |
| This subcommand optionally accepts a `--check` flag which succeeds if formatting is correct and |
| fails if it is not. For example: |
| |
| ./x.py fmt |
| ./x.py fmt --check", |
| ); |
| } |
| "test" => { |
| subcommand_help.push_str( |
| "\n |
| Arguments: |
| This subcommand accepts a number of paths to directories to tests that |
| should be compiled and run. For example: |
| |
| ./x.py test src/test/ui |
| ./x.py test src/libstd --test-args hash_map |
| ./x.py test src/libstd --stage 0 --no-doc |
| ./x.py test src/test/ui --bless |
| ./x.py test src/test/ui --compare-mode nll |
| |
| Note that `test src/test/* --stage N` does NOT depend on `build src/rustc --stage N`; |
| just like `build src/libstd --stage N` it tests the compiler produced by the previous |
| stage. |
| |
| If no arguments are passed then the complete artifacts for that stage are |
| compiled and tested. |
| |
| ./x.py test |
| ./x.py test --stage 1", |
| ); |
| } |
| "doc" => { |
| subcommand_help.push_str( |
| "\n |
| Arguments: |
| This subcommand accepts a number of paths to directories of documentation |
| to build. For example: |
| |
| ./x.py doc src/doc/book |
| ./x.py doc src/doc/nomicon |
| ./x.py doc src/doc/book src/libstd |
| |
| If no arguments are passed then everything is documented: |
| |
| ./x.py doc |
| ./x.py doc --stage 1", |
| ); |
| } |
| _ => {} |
| }; |
| // Get any optional paths which occur after the subcommand |
| let paths = matches.free[1..].iter().map(|p| p.into()).collect::<Vec<PathBuf>>(); |
| |
| let cfg_file = matches.opt_str("config").map(PathBuf::from).or_else(|| { |
| if fs::metadata("config.toml").is_ok() { |
| Some(PathBuf::from("config.toml")) |
| } else { |
| None |
| } |
| }); |
| |
| // All subcommands except `clean` can have an optional "Available paths" section |
| if matches.opt_present("verbose") { |
| let config = Config::parse(&["build".to_string()]); |
| let mut build = Build::new(config); |
| metadata::build(&mut build); |
| |
| let maybe_rules_help = Builder::get_help(&build, subcommand.as_str()); |
| extra_help.push_str(maybe_rules_help.unwrap_or_default().as_str()); |
| } else if !(subcommand.as_str() == "clean" || subcommand.as_str() == "fmt") { |
| extra_help.push_str( |
| format!("Run `./x.py {} -h -v` to see a list of available paths.", subcommand) |
| .as_str(), |
| ); |
| } |
| |
| // User passed in -h/--help? |
| if matches.opt_present("help") { |
| usage(0, &opts, &subcommand_help, &extra_help); |
| } |
| |
| let cmd = match subcommand.as_str() { |
| "build" => Subcommand::Build { paths }, |
| "check" => Subcommand::Check { paths }, |
| "clippy" => Subcommand::Clippy { paths }, |
| "fix" => Subcommand::Fix { paths }, |
| "test" => Subcommand::Test { |
| paths, |
| bless: matches.opt_present("bless"), |
| compare_mode: matches.opt_str("compare-mode"), |
| pass: matches.opt_str("pass"), |
| test_args: matches.opt_strs("test-args"), |
| rustc_args: matches.opt_strs("rustc-args"), |
| fail_fast: !matches.opt_present("no-fail-fast"), |
| rustfix_coverage: matches.opt_present("rustfix-coverage"), |
| doc_tests: if matches.opt_present("doc") { |
| DocTests::Only |
| } else if matches.opt_present("no-doc") { |
| DocTests::No |
| } else { |
| DocTests::Yes |
| }, |
| }, |
| "bench" => Subcommand::Bench { paths, test_args: matches.opt_strs("test-args") }, |
| "doc" => Subcommand::Doc { paths }, |
| "clean" => { |
| if !paths.is_empty() { |
| println!("\nclean does not take a path argument\n"); |
| usage(1, &opts, &subcommand_help, &extra_help); |
| } |
| |
| Subcommand::Clean { all: matches.opt_present("all") } |
| } |
| "fmt" => Subcommand::Format { check: matches.opt_present("check") }, |
| "dist" => Subcommand::Dist { paths }, |
| "install" => Subcommand::Install { paths }, |
| _ => { |
| usage(1, &opts, &subcommand_help, &extra_help); |
| } |
| }; |
| |
| Flags { |
| verbose: matches.opt_count("verbose"), |
| stage: matches.opt_str("stage").map(|j| j.parse().expect("`stage` should be a number")), |
| dry_run: matches.opt_present("dry-run"), |
| on_fail: matches.opt_str("on-fail"), |
| rustc_error_format: matches.opt_str("error-format"), |
| keep_stage: matches |
| .opt_strs("keep-stage") |
| .into_iter() |
| .map(|j| j.parse().expect("`keep-stage` should be a number")) |
| .collect(), |
| host: split(&matches.opt_strs("host")) |
| .into_iter() |
| .map(|x| INTERNER.intern_string(x)) |
| .collect::<Vec<_>>(), |
| target: split(&matches.opt_strs("target")) |
| .into_iter() |
| .map(|x| INTERNER.intern_string(x)) |
| .collect::<Vec<_>>(), |
| config: cfg_file, |
| jobs: matches.opt_str("jobs").map(|j| j.parse().expect("`jobs` should be a number")), |
| cmd, |
| incremental: matches.opt_present("incremental"), |
| exclude: split(&matches.opt_strs("exclude")) |
| .into_iter() |
| .map(|p| p.into()) |
| .collect::<Vec<_>>(), |
| deny_warnings: parse_deny_warnings(&matches), |
| llvm_skip_rebuild: matches.opt_str("llvm-skip-rebuild").map(|s| s.to_lowercase()).map( |
| |s| s.parse::<bool>().expect("`llvm-skip-rebuild` should be either true or false"), |
| ), |
| } |
| } |
| } |
| |
| impl Subcommand { |
| pub fn test_args(&self) -> Vec<&str> { |
| match *self { |
| Subcommand::Test { ref test_args, .. } | Subcommand::Bench { ref test_args, .. } => { |
| test_args.iter().flat_map(|s| s.split_whitespace()).collect() |
| } |
| _ => Vec::new(), |
| } |
| } |
| |
| pub fn rustc_args(&self) -> Vec<&str> { |
| match *self { |
| Subcommand::Test { ref rustc_args, .. } => { |
| rustc_args.iter().flat_map(|s| s.split_whitespace()).collect() |
| } |
| _ => Vec::new(), |
| } |
| } |
| |
| pub fn fail_fast(&self) -> bool { |
| match *self { |
| Subcommand::Test { fail_fast, .. } => fail_fast, |
| _ => false, |
| } |
| } |
| |
| pub fn doc_tests(&self) -> DocTests { |
| match *self { |
| Subcommand::Test { doc_tests, .. } => doc_tests, |
| _ => DocTests::Yes, |
| } |
| } |
| |
| pub fn bless(&self) -> bool { |
| match *self { |
| Subcommand::Test { bless, .. } => bless, |
| _ => false, |
| } |
| } |
| |
| pub fn rustfix_coverage(&self) -> bool { |
| match *self { |
| Subcommand::Test { rustfix_coverage, .. } => rustfix_coverage, |
| _ => false, |
| } |
| } |
| |
| pub fn compare_mode(&self) -> Option<&str> { |
| match *self { |
| Subcommand::Test { ref compare_mode, .. } => compare_mode.as_ref().map(|s| &s[..]), |
| _ => None, |
| } |
| } |
| |
| pub fn pass(&self) -> Option<&str> { |
| match *self { |
| Subcommand::Test { ref pass, .. } => pass.as_ref().map(|s| &s[..]), |
| _ => None, |
| } |
| } |
| } |
| |
| fn split(s: &[String]) -> Vec<String> { |
| s.iter().flat_map(|s| s.split(',')).map(|s| s.to_string()).collect() |
| } |
| |
| fn parse_deny_warnings(matches: &getopts::Matches) -> Option<bool> { |
| match matches.opt_str("warnings").as_ref().map(|v| v.as_str()) { |
| Some("deny") => Some(true), |
| Some("warn") => Some(false), |
| Some(value) => { |
| eprintln!(r#"invalid value for --warnings: {:?}, expected "warn" or "deny""#, value,); |
| process::exit(1); |
| } |
| None => None, |
| } |
| } |
