undefined reference to `_ctype_'

[N8TM@aol.com]

In a message dated 1/23/2000 3:00:09 PM Pacific Standard Time, 
Guido.VanHoecke@advalvas.be writes:

>  _ctype_ not being defined. 

You have a mixed version installation.  You should either install gcc 
binaries which are compatible with the original cygnus b20.1 distribution, or 
upgrade to a cygwin version which incorporates the newer style ctype support. 
This should be documented at the site where you got your gcc.  I have been 
running the gcc testsuite on the 19990819 cygwin snapshot.  This should be 
satisfactory if you are not running threads.  See my file 
http://members.aol.com/n8tm/cygwingccg77.htm or consult the FAQ for the 
cygwin mailing list.  The gcc mailing list is not responsible for library 
installation.