Bug Builds failing after upgrading to 2022.2

Hi there,

I tried newly released 2022.2.1f1 but (clean) builds are now failing in the "Linking build.js (wasm)" phase with an unclear error message.

Library\Bee\artifacts\WebGL\build\debug_WebGL_wasm\build.js: undefined symbol: _ZNSt3__212basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEC1ERKS5_ (referenced by top-level compiled C/C++ code)

upgraded from 2021.1.7f1, any idea what causes this and how I could fix and/or debug this error message?

 

Some more info from Editor.log

Code (CSharp):

1. ##### Custom Environment Variables
2. EM_CONFIG=C:\Program Files\Unity\Hub\Editor\2022.2.1f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\.emscripten
3. EMSDK_PYTHON=C:\Program Files\Unity\Hub\Editor\2022.2.1f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\python\python.exe
4. EMCC_SKIP_SANITY_CHECK=1
5. EM_FROZEN_CACHE=1
6. EM_WORKAROUND_PYTHON_BUG_34780=1
7. EM_WORKAROUND_WIN7_BAD_ERRORLEVEL_BUG=1
8. ##### ExitCode
9. 1
10. ##### Output
11. error: undefined symbol: _ZNSt3__212basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEC1ERKS5_ (referenced by top-level compiled C/C++ code)
12. warning: Link with `-s LLD_REPORT_UNDEFINED` to get more information on undefined symbols
13. warning: To disable errors for undefined symbols use `-s ERROR_ON_UNDEFINED_SYMBOLS=0`
14. warning: __ZNSt3__212basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEC1ERKS5_ may need to be added to EXPORTED_FUNCTIONS if it arrives from a system library
15. Error: Aborting compilation due to previous errors
16. emcc: error: '"C:/Program Files/Unity/Hub/Editor/2022.2.1f1/Editor/Data/PlaybackEngines/WebGLSupport/BuildTools/Emscripten/node/node.exe" "C:\Program Files\Unity\Hub\Editor\2022.2.1f1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emscripten\src\compiler.js" C:\Users\STEFAN~1\AppData\Local\Temp\tmp4_8xydfj.json' failed (returned 1)
17. *** Tundra build failed (965.34 seconds - 0:16:05), 346 items updated, 551 evaluated
18. ExitCode: 3 Duration: 16m:05s

 

Deleting and rebuilding the Library folder did not solve the issue

 

After some searching in files for this signature, it seems to be caused by a Draco plugin. This plugin might not support the latest Emscripten version?



Submitted an issue on the github page for the Draco plugin, still looking for advice on how to build.

https://github.com/atteneder/DracoUnity/issues/55

 

got same issue on 22.2.4f1c1

Library/Bee/artifacts/WebGL/build/debug_WebGL_wasm/build.js: undefined symbol: _ZNSt3__212basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEC1ERKS5_ (referenced by top-level compiled C/C++ code)