Probably just a missed diff. From pkg-descr: This is a meta port. The Clang compiler is installed by the devel/llvm-devel port.
A commit references this bug: Author: brooks Date: Thu Feb 11 23:07:49 UTC 2016 New revision: 408702 URL: https://svnweb.freebsd.org/changeset/ports/408702 Log: Refer to devel/llvm38 not -devel in pkg-descr. PR: 207108 Submitted by: c.kworr@gmail.com Changes: head/devel/lldb38/Makefile head/devel/lldb38/pkg-descr head/lang/clang38/Makefile head/lang/clang38/pkg-descr
Thanks!