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#![feature(rustc_private)]
extern crate rustc_driver;
extern crate rustc_interface;
extern crate rustc_session;
extern crate rustc_span;
use rustc_interface::interface;
use rustc_session::config::{Input, Options, OutFileName, OutputType, OutputTypes};
use rustc_span::FileName;
use std::path::PathBuf;
fn main() {
let src = r#"
fn main() {}
"#;
let args: Vec<String> = std::env::args().collect();
if args.len() < 4 {
panic!("expected rustc path");
}
let tmpdir = PathBuf::from(&args[1]);
let mut sysroot = PathBuf::from(&args[3]);
sysroot.pop();
sysroot.pop();
compile(src.to_string(), tmpdir.join("out"), sysroot.clone());
compile(src.to_string(), tmpdir.join("out"), sysroot.clone());
}
fn compile(code: String, output: PathBuf, sysroot: PathBuf) {
let mut opts = Options::default();
opts.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
opts.maybe_sysroot = Some(sysroot);
if let Ok(linker) = std::env::var("RUSTC_LINKER") {
opts.cg.linker = Some(linker.into());
}
let name = FileName::anon_source_code(&code);
let input = Input::Str { name, input: code };
let config = interface::Config {
opts,
crate_cfg: Default::default(),
crate_check_cfg: Default::default(),
input,
output_file: Some(OutFileName::Real(output)),
output_dir: None,
ice_file: None,
file_loader: None,
locale_resources: &[],
lint_caps: Default::default(),
parse_sess_created: None,
hash_untracked_state: None,
register_lints: None,
override_queries: None,
make_codegen_backend: None,
registry: rustc_driver::diagnostics_registry(),
using_internal_features: std::sync::Arc::default(),
expanded_args: Default::default(),
};
interface::run_compiler(config, |compiler| {
let linker = compiler.enter(|queries| {
queries.global_ctxt()?.enter(|tcx| tcx.analysis(()))?;
queries.codegen_and_build_linker()
});
linker.unwrap().link(&compiler.sess, &*compiler.codegen_backend).unwrap();
});
}
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