Skip to content

docs: note lean_exe libstdc++ link failure on Linux (see #196) #197

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
ide-developer wants to merge 1 commit into from
Closed

docs: note lean_exe libstdc++ link failure on Linux (see #196) #197

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 2 additions & 0 deletions README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -173,6 +173,8 @@ theorem mul_left_comm : ∀ a b c : G, a * (b * c) = b * (a * c)

* In some cases, `search_proof` produces an erroneous proof with error messages like `fail to show termination for ...`. A temporary workaround is changing the theorem's name before applying `search_proof`. You can change it back after `search_proof` completes.

* On Linux, a `lean_exe` target (as opposed to a `lean_lib` target) in a downstream project may fail to link with `undefined symbol` errors for libstdc++ types (e.g. `vtable for std::basic_ifstream`), even though a `lean_lib` target in the same project builds and runs Lean Copilot correctly. This happens because Lean's own executable link recipe statically links `libc++`/`libc++abi` and never links `libstdc++`, while Lean Copilot's native code (`libleanffi.a`/CTranslate2) is built against the system's `libstdc++`. See [#196](https://github.com/lean-dojo/LeanCopilot/issues/196) for the full root-cause analysis and a working per-project `moreLinkArgs` workaround.

## Getting in Touch

* For general questions and discussions, please use [GitHub Discussions](https://github.com/lean-dojo/LeanCopilot/discussions).
Expand Down