4.8Rで、
>cd /usr/ports/multimedia/avifile
#su
#make install

Make sure the Makefile and distinfo file (/usr/ports/multimedia/avifile/distinfo)
are up to date. If you are absolutely sure you want to override this
check, type "make NO_CHECKSUM=yes [other args]".
*** Error code 1

Stop in /usr/ports/multimedia/avifile.
*** Error code 1

Stop in /usr/ports/multimedia/avifile.

となってしまいますー。初心者でわけわからん、おしえてくだせー。