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//! Shim which is passed to Cargo as "rustdoc" when running the bootstrap.
//!
//! See comments in `src/bootstrap/rustc.rs` for more information.
use std::env;
use std::ffi::OsString;
use std::path::PathBuf;
use std::process::Command;
include!("../dylib_util.rs");
fn main() {
let args = env::args_os().skip(1).collect::<Vec<_>>();
let rustdoc = env::var_os("RUSTDOC_REAL").expect("RUSTDOC_REAL was not set");
let libdir = env::var_os("RUSTDOC_LIBDIR").expect("RUSTDOC_LIBDIR was not set");
let sysroot = env::var_os("RUSTC_SYSROOT").expect("RUSTC_SYSROOT was not set");
use std::str::FromStr;
let verbose = match env::var("RUSTC_VERBOSE") {
Ok(s) => usize::from_str(&s).expect("RUSTC_VERBOSE should be an integer"),
Err(_) => 0,
};
let mut dylib_path = dylib_path();
dylib_path.insert(0, PathBuf::from(libdir.clone()));
let mut cmd = Command::new(rustdoc);
cmd.args(&args)
.arg("--sysroot")
.arg(&sysroot)
.env(dylib_path_var(), env::join_paths(&dylib_path).unwrap());
// Force all crates compiled by this compiler to (a) be unstable and (b)
// allow the `rustc_private` feature to link to other unstable crates
// also in the sysroot.
if env::var_os("RUSTC_FORCE_UNSTABLE").is_some() {
cmd.arg("-Z").arg("force-unstable-if-unmarked");
}
if let Some(linker) = env::var_os("RUSTDOC_LINKER") {
let mut arg = OsString::from("-Clinker=");
arg.push(&linker);
cmd.arg(arg);
}
if env::var_os("RUSTDOC_FUSE_LD_LLD").is_some() {
cmd.arg("-Clink-arg=-fuse-ld=lld");
if cfg!(windows) {
cmd.arg("-Clink-arg=-Wl,/threads:1");
} else {
cmd.arg("-Clink-arg=-Wl,--threads=1");
}
}
// Needed to be able to run all rustdoc tests.
if let Some(ref x) = env::var_os("RUSTDOC_RESOURCE_SUFFIX") {
// This "unstable-options" can be removed when `--resource-suffix` is stabilized
cmd.arg("-Z").arg("unstable-options");
cmd.arg("--resource-suffix").arg(x);
}
if verbose > 1 {
eprintln!(
"rustdoc command: {:?}={:?} {:?}",
dylib_path_var(),
env::join_paths(&dylib_path).unwrap(),
cmd,
);
eprintln!("sysroot: {:?}", sysroot);
eprintln!("libdir: {:?}", libdir);
}
std::process::exit(match cmd.status() {
Ok(s) => s.code().unwrap_or(1),
Err(e) => panic!("\n\nfailed to run {:?}: {}\n\n", cmd, e),
})
}
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