bison and flex are available from the gnuwin32 effort: http://gnuwin32.sourceforge.net/packages.html
additional comments from an mingw developer:
Earnie Boyd schrieb:
> Darko Prenosil wrote:
>> Bison binary downloaded from MinGW site was not working - and that one
>> was not compiled by me.
>
> I've marked it on my round tuit list to look at. Configuring with
> --prefix=/mingw and doing a make && make install will correct your problem.
---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
