Yesterday I tryed the Borland sdcc.
 
- Renamed my original bin subdir.
- Created a new empty bin.
- Extracted the Borlanded zip files to a new bin.
- All of the other subdirs containing includes and libs from the cygwin remained unchanged.
- And at last I could compile my test file and some others.
 
I think it's a good idea that someone upload the Borland version of the v222 sdcc.
At present I am using the borland V221 sdcc with v222 include/lib files. It seems working by now.
 
Soon I will try your suggestions for installig properly cygwin.
 
Thanks for the help from you all.
 
Jose Barbosa