Commits on Jul 23, 2026

1. Support extra activated path via activated_path_extra …

   In newer versions of emscripten, executables are being moved into a
   `bin` subdirectory instead of residing in the root directory. To enable
   `emsdk` to add `bin` to `PATH` while maintaining backwards
   compatibility with older emscripten releases, this change introduces an
   optional `activated_path_extra` property on `Tool`.
   
   When configuring `PATH` or checking environment activation,
   `activated_path_extra` is checked and included in addition to the
   primary `activated_path` if the directory exists on disk.
   
   Alternatives considered:
   - Delimited strings (e.g. semicolon or colon separated) in
     `activated_path`: Rejected because colon (`:`) conflicts with
     Windows drive letters (`C:\...`), and splitting string paths would
     require updating all call sites that expect `activated_path` to be a
     single directory (e.g., when writing `emscripten-version.txt`).
   - JSON arrays in `activated_path`: While this avoids delimiter
     collisions on Windows, making `activated_path` polymorphic (either a
     string or list) would similarly complicate call sites requiring a
     single root directory.
   - Hardcoded directory checking: Dynamically checking if a `bin`
     subdirectory exists in Python code was rejected to avoid excessive
     special-case tool checks in `emsdk.py`.

   

   sbc100 committed Jul 23, 2026
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