INDEX build failed for 5.x

[Erwin Lansing]

INDEX build failed with errors:
Generating INDEX-5 - please wait..perl: not found
===> deskutils/gdeskcal-skins failed
*** Error code 1
perl: not found
perl: not found
===> databases/dbview failed
===> audio/modplugplay failed
*** Error code 1
perl: not found
*** Error code 1
===> devel/ZendOptimizer failed
*** Error code 1
*** Error code 1

Stop in /usr/ports.clean.
*** Error code 1

Stop in /usr/ports.clean.
4 errors

Committers on the hook:
demon mezz 

Most recent CVS update was:
U INDEX
U INDEX-5
P UPDATING
P databases/phpmyadmin/Makefile
P devel/p5-Module-Info/Makefile
U devel/p5-Module-Info/distinfo
P devel/p5-Proc-Simple/Makefile
U devel/p5-Proc-Simple/distinfo
P devel/p5-Proc-Simple/pkg-descr
P mail/courier-imap/Makefile
P mail/courier-imap/distinfo
P net/phpldapadmin/Makefile
P net/phpldapadmin/pkg-message
P security/nessus/Makefile
U security/nessus/distinfo
P security/nessus-libnasl/Makefile
U security/nessus-libnasl/distinfo
P security/nessus-libraries/Makefile
U security/nessus-libraries/distinfo
P security/nessus-plugins/Makefile
U security/nessus-plugins/distinfo
P security/nessus-plugins/pkg-plist