sync.threads #
This module adds the necessary compiler flags for using threads. It is automatically imported by code that does go func() . See the spawn-expression handling in vlib/v/parser/. The goal is that programs, that do not use threads at all will not need to link to -lpthread etc.
Note: on some platforms like Android, linking -lpthread is not needed too. See https://stackoverflow.com/a/31277163/1904615