INDEX build failed for 8.x

[Ports Index build]

INDEX build failed with errors:
Generating INDEX-8 - please wait..clang: not found
 Done.
Warning: Duplicate INDEX entry: rubygem-bunny-0.6.0

Committers on the hook:
 jgh jkim swills 

Most recent SVN update was:
Updating '.':
U    editors/libreoffice/Makefile
U    devel/libvirt/Makefile
Updated to revision 322156.