Compile win64 filesys kernel module only with Cygwin tools?

[Hans-Bernhard Bröker]

Am 09.08.2023 um 21:17 schrieb Wendy Lin via Cygwin:
> How can I compile
> https://github.com/microsoft/Windows-driver-samples/tree/main/filesys/cdfs
> with Cygwin gcc?

You should not be trying to do that.

That's deeply system-specific Windows code.  It has nothing to with 
POSIX, Cygwin or anything like that.

For that you need a native Windows toolchain, and quite possibly some 
extra SDK packages from Microsoft to enable building them.  MinGW64 
(wether stand-alone, or the MSYS(2) hosted one, or the one hosted in 
Cygwin) might be able to do it.