The following message is a courtesy copy of an article
that has been posted to gmane.os.cygwin as well.
It appears that the current cygwin libiconv package still has problems
described in the following messages:
<http://article.gmane.org/gmane.lisp.clisp.general/6832>
<http://article.gmane.org/gmane.lisp.clisp.general/6767>
it also appears that all it takes to fix the problem is to
recompile the libraries from the current sources.
Charles, are you the maintainer of the cygwin package?
If yes, could you please remake the package?
If no, could you please ask the maintainer to do that?