/net/sparc/tools/perl-5.8.8/{bin,lib,...}
   /net/i386/tools/perl-5.8.8/...
   /net/linux/tools/perl-5.8.8/...

# symbolic link:
   /net/tools -> /etc/tools

# on solaris:
   /etc/tools -> /net/sparc/tools

# on freebsd:
   /etc/tools -> /net/i386/tools

# on linux:
   /etc/tools -> /net/linux/tools