mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Build proc-macro-test-impl out-of-tree

Browse Source 
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)
This commit is contained in:
Amos Wenger 2022-07-20 16:14:53 +02:00
parent bd4439fafa
commit a88e088fa7
1 changed files with 25 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
crates/proc-macro-test/build.rs
View File

@ -17,9 +17,25 @@ fn main() {
let name = "proc-macro-test-impl"; let name = "proc-macro-test-impl";
let version = "0.0.0"; 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 target_dir = out_dir.join("target");
let output = Command::new(toolchain::cargo()) let output = Command::new(toolchain::cargo())
.current_dir("imp") .current_dir(&staging_dir)
.args(&["build", "-p", "proc-macro-test-impl", "--message-format", "json"]) .args(&["build", "-p", "proc-macro-test-impl", "--message-format", "json"])
// Explicit override the target directory to avoid using the same one which the parent // Explicit override the target directory to avoid using the same one which the parent
// cargo is using, or we'll deadlock. // cargo is using, or we'll deadlock.
@ -29,7 +45,14 @@ fn main() {
.arg(&target_dir) .arg(&target_dir)
.output() .output()
.unwrap(); .unwrap();
assert!(output.status.success()); 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; let mut artifact_path = None;
for message in Message::parse_stream(output.stdout.as_slice()) { for message in Message::parse_stream(output.stdout.as_slice()) {