Issues running mergemaster

[Joachim Dagerot]

I'm updating my 5.1 system to 5.3 and have succeeded building and install the kernel.

Now, before installworld I'm trying to run mergemaster (to solve the "proxy user missing" issue) and it gives me this headache, where do I start?:

cd /usr/src/etc/isdn; make install
install -o root  -g wheel -m 700  answer  /var/tmp/temproot/etc/isdn/answer
install -o root  -g wheel -m 700  isdntel.sh  /var/tmp/temproot/etc/isdn/isdntel
install -o root  -g wheel -m 700  record  /var/tmp/temproot/etc/isdn/record
install -o root  -g wheel -m 700  tell  /var/tmp/temproot/etc/isdn/tell
install -o root  -g wheel -m 700  tell-record  /var/tmp/temproot/etc/isdn/tell-record
install -o root  -g wheel -m 700  unknown_incoming  /var/tmp/temproot/etc/isdn/unknown_incoming
install -o root -g wheel  -m 600 holidays.D isdnd.rates.A isdnd.rates.D isdnd.rates.F isdnd.rates.L isdnd.rates.UK.BT isdnd.rc.sample isdntel.alias.sample /var/tmp/temproot/etc/isdn
cd /usr/src/etc/sendmail; make distribution
install -o root -g wheel -m 644  /usr/src/etc/sendmail/freebsd.mc freebsd.cf /var/tmp/temproot/etc/mail
install: freebsd.cf: No such file or directory
*** Error code 71

Stop in /usr/src/etc/sendmail.
*** Error code 1

Stop in /usr/src/etc.

  *** FATAL ERROR: Cannot 'cd' to /usr/src/etc and install files to
      the temproot environment