#!/bin/rc
awk '
BEGIN	{ include = 0; }
/^\tname/	{ if (needed[$2] != 0)
	    {
		print "Package{";
		include++;
		lastpkg = $2;
		needed[$2] = 0;
	    }
	    else
		include = 0;
	}
/^}/	{ if (include) print $0; include = 0; }
/^\tpkg /{ needed[$2]++; }
	{ if (include) print $0; }
END	{ for (p in needed) if (needed[p] != 0)
	    {
		print("% undefined", p) > "/fd/2";
		undefined++;
	    }
	  if (undefined) exit(1);
	}
' $*