Error during install-jpl

Hi!!

I am trying install jpl, on an IRIX box, which came with perl 5.6.0.
I am running into a weird problem during the same.. JPL, JNI,
PerlInterpreter
get installed without a hitch but when trying to install Sample, the
compiler
throws an error:
---
cc-1020 cc: ERROR File = Sample.c, Line = 24
  The identifier "my_perl" is undefined.

      dSP;
      ^

cc-1020 cc: ERROR File = Sample.c, Line = 69
  The identifier "my_perl" is undefined.

      dSP;
      ^

cc-1020 cc: ERROR File = Sample.c, Line = 130
  The identifier "my_perl" is undefined.

      dSP;
      ^

cc-1020 cc: ERROR File = Sample.c, Line = 191
  The identifier "my_perl" is undefined.

      dSP;
      ^
---
and the installation aborts

Am I missing something here??  Of course the same thing happens on trying to
install 'Test'..

Any pointers are appreciated..

Thanks,

Krishna.