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Don't try to determine sysroot. rustc_driver will use default value. #3257

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merged 4 commits into from
Dec 6, 2018
Merged

Don't try to determine sysroot. rustc_driver will use default value. #3257

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69813d6
Don't try to determine sysroot. rustc_driver will use default value.
o01eg Oct 4, 2018
571d4cc
Add sysroot getting code to tests.
o01eg Nov 22, 2018
5113de9
Add sysroot gettinh code to dogfood tests.
o01eg Dec 6, 2018
278b94e
Fix format.
o01eg Dec 6, 2018
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44 changes: 6 additions & 38 deletions src/driver.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,7 @@ use self::rustc_driver::{driver::CompileController, Compilation};

use std::convert::TryInto;
use std::path::Path;
use std::process::{exit, Command};
use std::process::exit;

fn show_version() {
println!(env!("CARGO_PKG_VERSION"));
Expand All @@ -40,54 +40,22 @@ pub fn main() {
exit(0);
}

let sys_root = option_env!("SYSROOT")
.map(String::from)
.or_else(|| std::env::var("SYSROOT").ok())
.or_else(|| {
let home = option_env!("RUSTUP_HOME").or(option_env!("MULTIRUST_HOME"));
let toolchain = option_env!("RUSTUP_TOOLCHAIN").or(option_env!("MULTIRUST_TOOLCHAIN"));
home.and_then(|home| toolchain.map(|toolchain| format!("{}/toolchains/{}", home, toolchain)))
})
.or_else(|| {
Command::new("rustc")
.arg("--print")
.arg("sysroot")
.output()
.ok()
.and_then(|out| String::from_utf8(out.stdout).ok())
.map(|s| s.trim().to_owned())
})
.expect("need to specify SYSROOT env var during clippy compilation, or use rustup or multirust");

// Setting RUSTC_WRAPPER causes Cargo to pass 'rustc' as the first argument.
// We're invoking the compiler programmatically, so we ignore this/
let mut orig_args: Vec<String> = env::args().collect();
if orig_args.len() <= 1 {
let mut args: Vec<String> = env::args().collect();
if args.len() <= 1 {
std::process::exit(1);
}
if Path::new(&orig_args[1]).file_stem() == Some("rustc".as_ref()) {
if Path::new(&args[1]).file_stem() == Some("rustc".as_ref()) {
// we still want to be able to invoke it normally though
orig_args.remove(1);
args.remove(1);
}
// this conditional check for the --sysroot flag is there so users can call
// `clippy_driver` directly
// without having to pass --sysroot or anything
let mut args: Vec<String> = if orig_args.iter().any(|s| s == "--sysroot") {
orig_args.clone()
} else {
orig_args
.clone()
.into_iter()
.chain(Some("--sysroot".to_owned()))
.chain(Some(sys_root))
.collect()
};

// this check ensures that dependencies are built but not linted and the final
// crate is
// linted but not built
let clippy_enabled = env::var("CLIPPY_TESTS").ok().map_or(false, |val| val == "true")
|| orig_args.iter().any(|s| s == "--emit=dep-info,metadata");
|| args.iter().any(|s| s == "--emit=dep-info,metadata");

if clippy_enabled {
args.extend_from_slice(&["--cfg".to_owned(), r#"feature="cargo-clippy""#.to_owned()]);
Expand Down
29 changes: 28 additions & 1 deletion tests/compile-test.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ use std::ffi::OsStr;
use std::fs;
use std::io;
use std::path::{Path, PathBuf};
use std::process::Command;

fn clippy_driver_path() -> PathBuf {
if let Some(path) = option_env!("CLIPPY_DRIVER_PATH") {
Expand All @@ -42,6 +43,28 @@ fn rustc_lib_path() -> PathBuf {
option_env!("RUSTC_LIB_PATH").unwrap().into()
}

fn rustc_sysroot_path() -> PathBuf {
option_env!("SYSROOT")
.map(String::from)
.or_else(|| std::env::var("SYSROOT").ok())
.or_else(|| {
let home = option_env!("RUSTUP_HOME").or(option_env!("MULTIRUST_HOME"));
let toolchain = option_env!("RUSTUP_TOOLCHAIN").or(option_env!("MULTIRUST_TOOLCHAIN"));
home.and_then(|home| toolchain.map(|toolchain| format!("{}/toolchains/{}", home, toolchain)))
})
.or_else(|| {
Command::new("rustc")
.arg("--print")
.arg("sysroot")
.output()
.ok()
.and_then(|out| String::from_utf8(out.stdout).ok())
.map(|s| s.trim().to_owned())
})
.expect("need to specify SYSROOT env var during clippy compilation, or use rustup or multirust")
.into()
}

fn config(mode: &str, dir: PathBuf) -> compiletest::Config {
let mut config = compiletest::Config::default();

Expand All @@ -55,7 +78,11 @@ fn config(mode: &str, dir: PathBuf) -> compiletest::Config {
config.run_lib_path = rustc_lib_path();
config.compile_lib_path = rustc_lib_path();
}
config.target_rustcflags = Some(format!("-L {0} -L {0}/deps -Dwarnings", host_libs().display()));
config.target_rustcflags = Some(format!(
"-L {0} -L {0}/deps -Dwarnings --sysroot {1}",
host_libs().display(),
rustc_sysroot_path().display()
));

config.mode = cfg_mode;
config.build_base = if rustc_test_suite().is_some() {
Expand Down
27 changes: 27 additions & 0 deletions tests/dogfood.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,31 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.

use std::path::PathBuf;
use std::process::Command;

fn rustc_sysroot_path() -> PathBuf {
option_env!("SYSROOT")
.map(String::from)
.or_else(|| std::env::var("SYSROOT").ok())
.or_else(|| {
let home = option_env!("RUSTUP_HOME").or(option_env!("MULTIRUST_HOME"));
let toolchain = option_env!("RUSTUP_TOOLCHAIN").or(option_env!("MULTIRUST_TOOLCHAIN"));
home.and_then(|home| toolchain.map(|toolchain| format!("{}/toolchains/{}", home, toolchain)))
})
.or_else(|| {
Command::new("rustc")
.arg("--print")
.arg("sysroot")
.output()
.ok()
.and_then(|out| String::from_utf8(out.stdout).ok())
.map(|s| s.trim().to_owned())
})
.expect("need to specify SYSROOT env var during clippy compilation, or use rustup or multirust")
.into()
}

#[test]
fn dogfood() {
if option_env!("RUSTC_TEST_SUITE").is_some() || cfg!(windows) {
Expand All @@ -21,6 +46,7 @@ fn dogfood() {
let output = std::process::Command::new(clippy_cmd)
.current_dir(root_dir)
.env("CLIPPY_DOGFOOD", "1")
.env("RUSTFLAGS", format!("--sysroot {}", rustc_sysroot_path().display()))
.arg("clippy")
.arg("--all-targets")
.arg("--all-features")
Expand Down Expand Up @@ -59,6 +85,7 @@ fn dogfood_tests() {
let output = std::process::Command::new(&clippy_cmd)
.current_dir(root_dir.join(d))
.env("CLIPPY_DOGFOOD", "1")
.env("RUSTFLAGS", format!("--sysroot {}", rustc_sysroot_path().display()))
.arg("clippy")
.arg("--")
.args(&["-D", "clippy::all"])
Expand Down