sphinx complains about: [4453/5099] cd /construction/xports/devel/llvm-devel/work/.build/tools/lldb/docs && /usr/local/bin/cmake -E make_directory /construction/xports/devel/llvm-devel/work/.build/tools/lldb/docs/html && /usr/local/bin/sphinx-build-2.7 -b html -d /construction/xports/devel/llvm-devel/work/.build/tools/lldb/docs/_doctrees-lldb-html -q /construction/xports/devel/llvm-devel/work/llvm-e3eea3c6bccb7f930030b0d1f07a9c79e53332ce/tools/lldb/docs /construction/xports/devel/llvm-devel/work/.build/tools/lldb/docs/html FAILED: tools/lldb/docs/CMakeFiles/docs-lldb-html cd /construction/xports/devel/llvm-devel/work/.build/tools/lldb/docs && /usr/local/bin/cmake -E make_directory /construction/xports/devel/llvm-devel/work/.build/tools/lldb/docs/html && /usr/local/bin/sphinx-build-2.7 -b html -d /construction/xports/devel/llvm-devel/work/.build/tools/lldb/docs/_doctrees-lldb-html -q /construction/xports/devel/llvm-devel/work/llvm-e3eea3c6bccb7f930030b0d1f07a9c79e53332ce/tools/lldb/docs /construction/xports/devel/llvm-devel/work/.build/tools/lldb/docs/html Theme error: unsupported theme option 'font_size' given A workaround is to unset the DOCS option. Most likely this will be addressed in the next llvm-devel snapshot.
This should have been fixed in r505794.