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Bug
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    Resolution: Done
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P2: Important
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    Qt Creator 4.11.0-beta1
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    None
 
Compiling the simple calendarwidget example on webassembly with qt creator's webassembly support takes 28mins on my machine, because qt creator mostly sits and does this by default: https://imgur.com/a/dcEcv7s
Perhaps this was a debug option that forgot to be turned off?
Update: problem was wrong emsdk version (too new).