plTcl test failed

Got the latest Tcl/Tk 8.0.4 from scriptics, compiled it and installed it
with great success.
RedHat 5.2 i386, Pentium machine, kernel 2.0.36

All my tcl/tk applications are working fine but :

After compiling and installing pltcl packacge, trying to run the tests
got the error :

QUERY: insert into T_pkey1 values (1, 'key1-1', 'test key');
ERROR:  Load of file /usr/local/pgsql/lib/pltcl.so failed:
/lib/libtcl8.0.so: undefined symbol: stat  

Is there any other library that have to be manually added when compiling
pltcl, same way as crypt was ?
Or the error comes from tcl library ?

-- 
Constantin Teodorescu
FLEX Consulting Braila, ROMANIA