[PSA] Linking of C++ programs to require em++ (not emcc)

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Sam Clegg

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Aug 2, 2026, 7:52:38 PM (2 days ago) Aug 2

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We are changing the behaviour to match gcc and clang here: https://github.com/emscripten-core/emscripten/pull/27469. This change is part of the ongoing process of eliminating differences with upstream clang.

If a link fails because `emcc` was used instead of `em++`, you should see a clear error message with a recommendation to switch to `em++`, which should make fixing any broken builds quick and easy.

cheers,