Regression test failing on Sparc Solaris 2.5.1

I'm resending this query. It didn't evoke any response the first time,
mabe it was too long :-). This time I will be more brief.

I've successfully installed v6.4.2 on my Sparc Solaris 2.5.1, however
it's failing a lot of regression tests. I know its normal to fail some
of the tests and indeed some were really trivial. I compared the
regression.diffs file to the regression.Solaris_sparc file which came
with the distribution. Some of the tests that failed were not supposed
to fail, like:
1. create_function_2, trigger, misc, plpgsql. Basically all failed
giving error messages that a particular shared object file couldn't be
loaded because of unsatisfied references. The exact messages were:
Load of file /bytek/postgres/postgresql-6.4.2/src/test/regress/input/.
./regress.so failed: ld.so.1: /bytek/postgres/bin/postmaster: fatal:
relocation error: symbol not found: SPI_tuptable: referenced in
/bytek/postgres/postgresql-6.4.2/src/test/regress/input/../regress.so

Load of file /bytek/postgres/postgresql-6.4.2/src/test/regress/input/.
./../../../contrib/spi/refint.so failed: ld.so.1:
/bytek/postgres/bin/postmaster
: fatal: relocation error: symbol not found: SPI_result: referenced in
/bytek/postgres/postgresql-6.4.2/src/test/regress/input/../../../../contrib/spi/refint.so

Load of file /bytek/postgres/postgresql-6.4.2/src/test/regress/input/.
./../../../contrib/spi/autoinc.so failed: ld.so.1:
/bytek/postgres/bin/postmaster: fatal: relocation error: symbol not
found: SPI_result: referenced in
/bytek/postgres/postgresql-6.4.2/src/test/regress/input/../../../../contrib/spi/autoinc.so

Load of file /bytek/postgres/lib/plpgsql.so failed: ld.so.1:
/bytek/postgres/bin/postmaster: fatal: relocation error: symbol not
found: SPI_tuptable:
referenced in /bytek/postgres/lib/plpgsql.so

Did I miss something? I had set the PGLIB varialble and gone ahead and
set the LD_LIBRARY_PATH to the same value also. No luck.

Thanks,
Anand Surelia.