SPI

I'm installing v6.4.2 on Solaris 2.5.1. Everything goes well until I run
the regression test. Some of the test fails with an error message like:
+ ERROR:  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
+ ERROR:  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/po
stgres/postgresql-6.4.2/src/test/regress/input/../../../../contrib/spi/refint.so


Has the SPI interface been changed?

Thanks for your help in advance,
- Anand Surelia