Problem building 5.0.1_patch with LANGUAGES+=fort77

[Paul Newhouse <newhouse%rockhead.com@localhost>]

Running NetBSD mailsrv 5.0.1_PATCH NetBSD 5.0.1_PATCH (MAIL) #21: Mon Jan 18 
12:13:24 PST 2010  root@mail:/usr/obj/sys/arch/i386/compile/MAIL i386

Immediately after 

   cd /usr/src
   ./build.sh -O BUILD_OBJ -T BUILD_TOOL cleandir
   cvs update -Pd
   ./build.sh -O BUILD_OBJ -T BUILD_TOOL release

I get this error regarding fort77 (text appended at the end of this mail), 
which is mentioned in /etc/mk.conf as

   LANGUAGES           += fort77

IIRC fortran was recommended during the install of the openoffice3 package?

Can someone set me straight on why this is happening?  A workaround that 
doesn't require me to change mk.conf depending what I'm building would be 
appreciated.

TIA,
Paul


#    create  i386/sysinstmsgs.es
/usr/src/BUILD_TOOL/bin/nbsed "s/@@VERSION@@/5.0.2_PATCH/" 
/usr/src/distrib/utils/sysinst/arch/i386/../../msg.mi.es 
/usr/src/distrib/utils/sysinst/arch/i386/msg.md.es 
/usr/src/distrib/utils/sysinst/arch/i386/../../msg.mbr.es |  
/usr/src/BUILD_TOOL/bin/nbawk -f /usr/src/distrib/utils/sysinst/arch/i386/../..
/unif.awk -v defines="BOOTSEL AOUT2ELF" |  /bin/sh 
/usr/src/distrib/utils/sysinst/arch/i386/../../msg_xlat.sh -f 
sysinstmsgs.fmtcnt > sysinstmsgs.es
nbmake: don't know how to make msg.mi.fort77. Stop

nbmake: stopped in /usr/src/BUILD_OBJ/distrib/i386/ramdisks/ramdisk-big/sysinst

*** Failed target:  sysinst_make
*** Failed command: ( cd sysinst; printf '.PATH: /usr/src/distrib/utils/sysinst
/arch/i386\n.CURDIR:= /usr/src/distrib/utils/sysinst/arch/i386\n.include 
"${.CURDIR}/Makefile"\n' | /usr/src/BUILD_TOOL/bin/nbmake -f- CRUNCHEDPROG=1 
DBG="-Os" depend )
*** Error code 2

Stop.
nbmake: stopped in /usr/src/distrib/i386/ramdisks/ramdisk-big

*** Failed target:  ramdiskbin
*** Failed command: /usr/src/BUILD_TOOL/bin/nbmake 
LDFLAGS='-Wl,-Map,ramdiskbin.map,--cref' AWK=/usr/src/BUILD_TOOL/bin/nbawk 
SMALLPROG=1 SMALLPROG_INET6=1 -f ramdiskbin.mk ramdiskbin.crunched
*** Error code 1

Stop.
nbmake: stopped in /usr/src/distrib/i386/ramdisks/ramdisk-big