compiler warning

[Andrew Hartung]

What does this mean?

Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option

10.14.6 with xcode 10.

Showed up after the latest port update I ran after here:

Adding subport libomp-devel
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Adding port lang/llvm-9.0
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Adding subport clang-9.0
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
Adding subport lldb-9.0


and here:

Warning: All compilers are either blacklisted or unavailable; defaulting to first fallback option
--->  Computing dependencies for llvm-9.0.