[llvm] [llvm][Support] Add UNIX socket support (PR #73603)

[via llvm-commits]

yozhu wrote:

> > Hit compilation errors when building LLVM for Windows:
> > llvm/lib/Support/raw_ostream.cpp(1018,22): error: variable has incomplete type 'struct sockaddr_un' [CONTEXT] 1018 | struct sockaddr_un Addr; [CONTEXT] | ^
> > llvm/lib/Support/raw_ostream.cpp(1077,22): error: variable has incomplete type 'struct sockaddr_un' [CONTEXT] 1077 | struct sockaddr_un Addr; [CONTEXT] | ^
> 
> What version of MSVC do you have? This should be supported by the minimum supported version.

We are currently using WinSDK 10.0.16299.0. What version would you recommend we move to?

https://github.com/llvm/llvm-project/pull/73603