6.0.6
thevoiceguy/siphon-ai6.0.6Aug 5, 2026by emscripten-bot
Upgrading?
AI Summary
Emscripten update makes `DEFAULT_TO_CXX` opt-in, adds Meson cross-compilation files, and updates libcxx/abi.
Key Highlights
- `DEFAULT_TO_CXX` is now disabled by default.
- Added Meson cross-compilation files (wasm32/wasm64).
- libcxx and libcxxabi updated to LLVM 22.1.8.
Breaking Changes
- `DEFAULT_TO_CXX` is now disabled by default (requires `-sDEFAULT_TO_CXX` to revert to old behavior).
New Features
- Meson cross-compilation configurations
- Updated C++ standard library versions
Full Release Notes
## What's Changed - `DEFAULT_TO_CXX` is now disabled by default. This means that `em++` is now required when linking C++ programs, matching the behavior of clang and gcc. The old behavior is still available using `-sDEFAULT_TO_CXX`. (#11121) - Added example Meson cross compilation files (`wasm32-emscripten.ini` and `wasm64-emscripten.ini`) in `tools/meson/`. (#27478) - libcxx and libcxxabi were updated to LLVM 22.1.8. (#27428) ## Contributors Thanks to the following contributors: @sbc100 (29) @aheejin (6) @guybedford (2) @tlively (1) **Full Changelog**: https://github.com/emscripten-core/emscripten/compare/6.0.5...6.0.6
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