libperl.so: undefined symbol: crypt (libSample.so)

i'm trying to get jpl running on redhat 6.1 and am having some
difficulties.

at the end of running ./install-jpl i get the following error:

=======================================================
Testing Sample...
+ cd Sample
+ JPLDEBUG=1
+ export JPLDEBUG
+ java Sample
/usr/lib/perl5/5.00503/i686-linux/CORE/libperl.so: undefined symbol:
crypt (libSample.so)
Can't find class Sample
Couldn't run Sample
=======================================================

i have also tried it with 5.005_63 and i get a different undefined
symbol.  i don't remember which it is now.

compiling any .jpl and running java on the class results in the same
error.  i'm currently using the 117_v3 blackdown jdk and have recompiled
perl to use the native malloc() and create libperl.so.  any ideas?

- Uberdog