a88e088fa7
Building it in-place fails in rust CI because the source directory is read-only. This changes `proc-macro-test`'s build script to first copy `imp` under `OUT_DIR` (which is read-write). It also prints stdout/stderr for the nested cargo invocation, should it fail. (I've seen failures in rust CI that I couldn't explain, and when they take 25 minutes to reproduce, you want to have that info)
78 lines
2.8 KiB
Rust
78 lines
2.8 KiB
Rust
//! This will build the proc macro in `imp`, and copy the resulting dylib artifact into the
|
|
//! `OUT_DIR`.
|
|
//!
|
|
//! `proc-macro-test` itself contains only a path to that artifact.
|
|
|
|
use std::{
|
|
env, fs,
|
|
path::{Path, PathBuf},
|
|
process::Command,
|
|
};
|
|
|
|
use cargo_metadata::Message;
|
|
|
|
fn main() {
|
|
let out_dir = env::var_os("OUT_DIR").unwrap();
|
|
let out_dir = Path::new(&out_dir);
|
|
|
|
let name = "proc-macro-test-impl";
|
|
let version = "0.0.0";
|
|
|
|
let imp_dir = std::env::current_dir().unwrap().join("imp");
|
|
let staging_dir = out_dir.join("staging");
|
|
std::fs::create_dir_all(&staging_dir).unwrap();
|
|
std::fs::create_dir_all(staging_dir.join("src")).unwrap();
|
|
|
|
for item_els in [&["Cargo.toml"][..], &["Cargo.lock"], &["src", "lib.rs"]] {
|
|
let mut src = imp_dir.clone();
|
|
let mut dst = staging_dir.clone();
|
|
for el in item_els {
|
|
src.push(el);
|
|
dst.push(el);
|
|
}
|
|
std::fs::copy(src, dst).unwrap();
|
|
}
|
|
|
|
let target_dir = out_dir.join("target");
|
|
let output = Command::new(toolchain::cargo())
|
|
.current_dir(&staging_dir)
|
|
.args(&["build", "-p", "proc-macro-test-impl", "--message-format", "json"])
|
|
// Explicit override the target directory to avoid using the same one which the parent
|
|
// cargo is using, or we'll deadlock.
|
|
// This can happen when `CARGO_TARGET_DIR` is set or global config forces all cargo
|
|
// instance to use the same target directory.
|
|
.arg("--target-dir")
|
|
.arg(&target_dir)
|
|
.output()
|
|
.unwrap();
|
|
if !output.status.success() {
|
|
println!("proc-macro-test-impl failed to build");
|
|
println!("============ stdout ============");
|
|
println!("{}", String::from_utf8_lossy(&output.stdout));
|
|
println!("============ stderr ============");
|
|
println!("{}", String::from_utf8_lossy(&output.stderr));
|
|
panic!("proc-macro-test-impl failed to build");
|
|
}
|
|
|
|
let mut artifact_path = None;
|
|
for message in Message::parse_stream(output.stdout.as_slice()) {
|
|
match message.unwrap() {
|
|
Message::CompilerArtifact(artifact) => {
|
|
if artifact.target.kind.contains(&"proc-macro".to_string()) {
|
|
let repr = format!("{} {}", name, version);
|
|
if artifact.package_id.repr.starts_with(&repr) {
|
|
artifact_path = Some(PathBuf::from(&artifact.filenames[0]));
|
|
}
|
|
}
|
|
}
|
|
_ => (), // Unknown message
|
|
}
|
|
}
|
|
|
|
// This file is under `target_dir` and is already under `OUT_DIR`.
|
|
let artifact_path = artifact_path.expect("no dylib for proc-macro-test-impl found");
|
|
|
|
let info_path = out_dir.join("proc_macro_test_location.txt");
|
|
fs::write(info_path, artifact_path.to_str().unwrap()).unwrap();
|
|
}
|