To close this loose end in the HN thread: The above guess turns out to be false. You can link a program in Cygwin that has WinMain. If you don't include <wind

To close this loose end in the HN thread: The above guess turns out to be false. You can link a program in Cygwin that has WinMain. If you don't include <windows.h>, you can give it whatever argument list you like, such as (void), and it will work. But in 32 bit Cygwin (which I still support), it will complain about _WinMain@16 missing (as a warning only). If you give it the correct signature declared in <winbase.h> then it links on 32 or 64 bit Cygwin just fine. without warnings. In this WinMain, you can use the wide-string functions for obtaining the command line and parsing to arguments. I am going with this fix for TXR.