Where XCode keeps compiled files

If using XCode (4.2) and needing to work with path-sensitive code, here is how you can find out where the executables are kept:

File -> Project Settings...

Then click the little arrow by the path under "Derived Data Location" (closer to Advanced button in XCode 4.2). There you will see folders with compiled files. If needed to add some path-sensitive data, insert it under the following path:

Project Name + some gibberish/Build/Products/Debug