docs: add tips for using multiprocessing fork in macos #5379
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Goals:
This PR adds tips for using multiprocessing fork in macOS.
Basically, Apple has changed the usage of
fork()
andexec()
of Objective-C since MacOS 10.13. Read here.This may cause Flow to hang at starting stage.
This PR add a fix to the issue by setting
OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES