cpan[19]> install Digest::SHA1                                                  
Running install for module 'Digest::SHA1'
Running make for G/GA/GAAS/Digest-SHA1-2.13.tar.gz
  Has already been unwrapped into directory /export/home/link/.cpan/build/Digest-SHA1-2.13-43bJ89
Could not make: Unknown error
Running make test
  Can't test without successful make
Running make install
  Make had returned bad status, install seems impossible