Cannot find PhysX.sln

I am trying to compile PhysX according to the instructions found at A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums but I have no idea what solutions are being talked about in Step 3. I assumed those were the solutions mentioned in the wiki page (I assumed that they were properly generated, but whenever I go into the compiler folder for either PhysX or Apex, but there is simply nothing there that even ends with .sln.

To make matters worse, after following the instructions on the page, not only do I not have the PhysX and Apex solution files, but the engine itself won’t compile properly anymore either.

Same issue here… (here specifically)