If you're looking for the DLLs for WinCache 2.0.0 (for use with PHP7+), here's a quick outline of the steps I took:
- Download the appropriate build from wincache's repository on sourceforge
- Run the .exe and extract the archive to a temporary directory
- Using 7zip, unpack the .msi within that temporary directory
- Add the .dll extension to the file named "php_wincache"