Thank you for your help. "cygcheck emacs" produced the output below. After I used setup to install the "lib" and "X11" packages, I am happy to report I have a working emacs.
However, (1) Although "info emacs" works, C-h does not provide any help options (2) C-x C-c does not exit emacs, although M-x-save-buffers-and-exit does ************* output from cygcheck before fix ***** Found: C:\cygwin\bin\emacs.exe C:\cygwin\bin\emacs.exe Error: could not find libICE.dll Error: could not find libSM.dll Error: could not find libX11.dll Error: could not find libXext.dll Error: could not find libXpm.dll Error: could not find cygncurses6.dll C:\cygwin\bin\cygwin1.dll C:\WINDOWS\system32\ADVAPI32.DLL C:\WINDOWS\system32\KERNEL32.dll C:\WINDOWS\system32\ntdll.dll C:\WINDOWS\system32\RPCRT4.dll C:\WINDOWS\system32\Secur32.dll C:\cygwin\bin\cygjpeg6b.dll C:\cygwin\bin\cygpng12.dll C:\cygwin\bin\cygz.dll C:\cygwin\bin\cygtiff3.dll -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple