INDEX build failed for 8.x

[Ports Index build]

INDEX build failed with errors:
Generating INDEX-8 - please wait..clang: not found
clang: not found
 Done.
Warning: Duplicate INDEX entry: pkg-1.1

Committers on the hook:
 bapt culot decke demon gahr rene wg zi 

Most recent SVN update was:
Updating '.':
A    net-im/openfire/files/patch-tls-dialback
U    net-im/openfire/Makefile
U    net-im/openfire/distinfo
UU   devel/uthash/Makefile
UU   devel/uthash/distinfo
UU   security/duo/pkg-plist
UU   security/duo/Makefile
UU   security/duo/distinfo
UU   security/duo/files/pkg-message.in
A    security/duo/files/patch-login__duo_Makefile.in
A    security/duo/files/patch-pam__duo_Makefile.in
U    comms/dcf77pi/Makefile
U    comms/dcf77pi/distinfo
A    math/gambit/files
A    math/gambit/files/patch-src-labenski-src_sheet.cpp
UU   math/gambit/pkg-plist
UU   math/gambit/Makefile
UU   math/gambit/distinfo
U    net-mgmt/netdisco/distinfo
U    net-mgmt/netdisco/files/pkg-message.in
U    net-mgmt/netdisco/files/netdisco.in
U    net-mgmt/netdisco/pkg-plist
U    net-mgmt/netdisco/Makefile
Updated to revision 321677.