HELP: language option software package not installed

Hello Everyone,

It has been sometime since I have installed PostgreSQL. It has been
running great with no crashes for like a year! But alas, my faithful
Sparc 20 turned belly-up. It is sad to loose an old friend @* | *@

I now have a Ultra10 :o) I've loaded Solaris 8 with the companion disk
that loaded Perl5. Everything appears to be loaded into
/usr/Perl5/5.00503. It looks OK to me but this happens:

./configure --with-perl --enable-odbc --enable-syslog --enable-cassert

Then during the gmake:

cp Pg.pm blib/lib/Pg.pm
AutoSplitting blib/lib.Pg.pm (blib/lib/auto/Pg)
/usr/bin/perl -I/usr/perl5/5.00503/sun4-solaris -I/usr/perl5/5.00503
/usr/perl5/5.00503/ExtUtils/xsubpp -typemap
/usr/perl5/5.00503/ExtUtils/typemap -typemap typemap Pg.xs >xstmp.c &&
mv xstmp.c Pg.c cc -c -I/usr/local/pgsql/include -x03 -xdepend
-DVERSION=\"1.8.0\" -DXS_VERSION=\"1.8.0\" -KPIC
-I/usr/perl5/5.00503/sun4-solaris/CORE Pg.c
/usr/ucb/cc: language optional software package not installed
gmake[4]: *** [Pg.o] Error 1
gmake[4]: Leaving directory
'/opt/pgsql/postgresql-7.1.3/src/interfaces/perl5'
gmake[3]: *** [Install] Error 2
gmake[3]: Leaving directory
'/opt/pgsql/postgresql-7.1.3/src/interfaces/perl5'
gmake[2]: *** [Install] Error 2
gmake[2]: Leaving directory '/opt/pgsql/postgresql-7.1.3/src/interfaces'

gmake[1]: *** [Install] Error 2
gmake[1]: Leaving directory '/opt/pgsql/postgresql-7.1.3/src'
gmake: *** [Install] Error 2