$ /usr/local/bin/perl Makefile.PL
# running Build.PL 
/usr/local/bin/perl Build.PL
OS unsupported! Patches welcome :) at Build.PL line 5, <DATA> line 547.
...

$ uname -a
SunOS solaris10 5.10 Generic sun4u sparc SUNW,Sun-Blade-2500