What version of gRPC and what language are you using?

1.8.2 C++

What operating system (Linux, Windows, …) and version?

Linux

What runtime / compiler are you using (e.g. python version or version of gcc)

clang6

What did you do?

Build with provided BUILD file.

What did you expect to see?

Build succeeds.

What did you see instead?

external/grpc_git/src/core/lib/iomgr/fork_posix.cc:25:10: fatal error: 'grpc/fork.h' file not found

Anything else we should know about your project / environment?

Looks like include/grpc/fork.h is missing from GRPC_PUBLIC_HEADERS?