Psql 7.0.2 install problem on Sol7

When trying to compile subj. the following error message occurs:

----cut-----
make[3]: Leaving directory
`/pack/postgresql-7.0.2/src/postgresql-7.0.2/src/interfaces/ecpg/preproc'
make[2]: Leaving directory
`/pack/postgresql-7.0.2/src/postgresql-7.0.2/src/interfaces/ecpg'
make -C libpq++ all
make[2]: Entering directory
`/pack/postgresql-7.0.2/src/postgresql-7.0.2/src/interfaces/libpq++'
c++ -g -O2 -I../../backend -I../../include -I../../interfaces/libpq -fPIC
-c -o pgconnection.o pgconnection.cc
c++ -g -O2 -I../../backend -I../../include -I../../interfaces/libpq -fPIC
-c -o pgdatabase.o pgdatabase.cc
c++ -g -O2 -I../../backend -I../../include -I../../interfaces/libpq -fPIC
-c -o pgtransdb.o pgtransdb.cc
c++ -g -O2 -I../../backend -I../../include -I../../interfaces/libpq -fPIC
-c -o pgcursordb.o pgcursordb.cc
c++ -g -O2 -I../../backend -I../../include -I../../interfaces/libpq -fPIC
-c -o pglobject.o pglobject.cc
ar crs libpq++.a pgconnection.o pgdatabase.o pgtransdb.o pgcursordb.o
pglobject.o
ranlib libpq++.a
ld -G -o libpq++.so.3.1 pgconnection.o pgdatabase.o pgtransdb.o pgcursordb.o
pglobject.o -L../../interfaces/libpq -lpq -ldl -lsocket -lresolv -lnsl -lm
-lc
pgconnection.o: could not read symbols: Bad value
make[2]: *** [libpq++.so.3.1] Error 1
make[2]: Leaving directory
`/pack/postgresql-7.0.2/src/postgresql-7.0.2/src/interfaces/libpq++'
make[1]: *** [all] Error 2
make[1]: Leaving directory
`/pack/postgresql-7.0.2/src/postgresql-7.0.2/src/interfaces'
make: *** [all] Error 2

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Anyone got a solution?

-Carsten