Wish External "temp folder" for compiled binaries, etc.?

Maybe I missed something and there's already a solution. I have one folder with all of my projects. I do a backup from time to time which includes all the generated binaries (like *jar files, etc.). These folders/files are then backuped, too which increases the needed space a lot. Using Xcopy or Robocopy excluding folders/files isn't always precise enough. Even if you copy the autobackups only, you have to write a script to backup it.

So wouldn't it a good idea to generate everything under a temp folder (perhaps with the package name as a subfolder)? Here we would keep the source folder "clean".

1. You can edit the ini file and set a single folder for the autobackups.
2. The Zipper tool, which is used to export B4XPages projects, skips all the unnecessary files. The source code of this tool is available here: https://www.b4x.com/android/forum/threads/comment-links-with-date-and-time.132262/post-834930