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


##</code><code>##

cpan[8]> fforce install Digest::SHA1                                            
Running install for module 'Digest::SHA1'
Running make for G/GA/GAAS/Digest-SHA1-2.13.tar.gz
CPAN: checksum security checks disabled because Digest::SHA not installed.

  CPAN.pm: Building G/GA/GAAS/Digest-SHA1-2.13.tar.gz

WARNING: LICENSE is not a known parameter.
Checking if your kit is complete...
Looks good
'LICENSE' is not a known MakeMaker parameter name.
Writing Makefile for Digest::SHA1
cp SHA1.pm blib/lib/Digest/SHA1.pm
/usr/perl5/5.8.4/bin/perl /usr/perl5/5.8.4/lib/ExtUtils/xsubpp  -typemap /usr/perl5/5.8.4/
lib/ExtUtils/typemap -typemap typemap  SHA1.xs > SHA1.xsc && mv SHA1.xsc SHA1.c
gcc -c   -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_TS_ERRNO -O2 -fno-strict-aliasing  
 -DVERSION=\"2.13\" -DXS_VERSION=\"2.13\" -fPIC "-I/usr/perl5/5.8.4/lib/sun4-solaris-64int
/CORE"   SHA1.c
/bin/sh: gcc: not found
gmake: *** [SHA1.o] Error 1
  GAAS/Digest-SHA1-2.13.tar.gz
  /usr/sfw/bin/gmake -- NOT OK
Running make test
  Can't test without successful make
Running make install
  Make had returned bad status, install seems impossible
Failed during this command:
 GAAS/Digest-SHA1-2.13.tar.gz                 : make NO