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//! Regression test for [rustc doesn't handle relative symlinks to libraries
//! #13890](https://github.com/rust-lang/rust/issues/13890).
//!
//! This smoke test checks that for a given library search path `P`:
//!
//! - `rustc` is able to locate a library available via a symlink, where:
//! - the symlink is under the directory subtree of `P`,
//! - but the actual library is not (it's in a different directory subtree).
//!
//! For example:
//!
//! ```text
//! actual_dir/
//! libfoo.rlib
//! symlink_dir/ # $CWD set; rustc -L . bar.rs that depends on foo
//! libfoo.rlib --> ../actual_dir/libfoo.rlib
//! ```
//!
//! Previously, if `rustc` was invoked with CWD set to `symlink_dir/`, it would fail to traverse the
//! symlink to locate `actual_dir/libfoo.rlib`. This was originally fixed in
//! <https://github.com/rust-lang/rust/pull/13903>.
//@ ignore-cross-compile
//@ needs-symlink
use run_make_support::{bare_rustc, cwd, path, rfs, rust_lib_name};
fn main() {
let actual_lib_dir = path("actual_lib_dir");
let symlink_lib_dir = path("symlink_lib_dir");
rfs::create_dir_all(&actual_lib_dir);
rfs::create_dir_all(&symlink_lib_dir);
// NOTE: `bare_rustc` is used because it does not introduce an implicit `-L .` library search
// flag.
bare_rustc().input("foo.rs").output(actual_lib_dir.join(rust_lib_name("foo"))).run();
rfs::symlink_file(
actual_lib_dir.join(rust_lib_name("foo")),
symlink_lib_dir.join(rust_lib_name("foo")),
);
// Make rustc's $CWD be in the directory containing the symlink-to-lib.
bare_rustc()
.current_dir(&symlink_lib_dir)
.library_search_path(".")
.input(cwd().join("bar.rs"))
.run();
}
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