main
[6/N] Fix Wextra-semi warning (#139605)
[3/N] Use internal linkage in C++ files (#151297)
Do not define C10_IOS on Mac (#37283)
[caffe2] Ignore -Wswitch-enum warnings (#166760)
[non ghstack] Init threadpool with user defined num_threads before default (#137051)
Revert "Fix clang-tidy warnings in Caffe2 code (#134935)"
[caffe2] drop XROS ports (#76366)
Add guard to run on current thread (#52361)