tests/headers: document needs-symlink (#2001)

Added in <rust-lang/rust#126862>.
rust-lang · Jun 24, 2024 · 22fbccf · 22fbccf
1 parent a251320
commit 22fbccf
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diff --git a/src/tests/headers.md b/src/tests/headers.md
@@ -164,6 +164,8 @@ The following header commands will check rustc build settings and target setting
 * `needs-rust-lld` — ignores if the rust lld support is not enabled
   (`rust.lld = true` in `config.toml`)
 * `needs-threads` — ignores if the target does not have threading support
+* `needs-symlink` — ignores if the target does not support symlinks. This can be the case on Windows
+  if the developer did not enable priviledged symlink permissions.
 
 The following header commands will check LLVM support: