Alien::Build::
		::Win32
		::FreeBSD
		::etc		# @ISA A::B
		
		::Options	# flags/options object to configure etc
		
		::Autoconf
		::ModPerl.pm	#?
		::Perl			#?
		::PerlMagick	#?
		
Alien::Lib::
		Foo
			lib/Foo.pm				# description
			hints/$^O				# config auto
			Makefile.PL || Build.PL
			
			
			# pre/postamble hooks
			# flags