Cannot include .h files back one directory I am working on a project with multiple arduinos. I want my folder structure to be as follows:

/
  libs/
    someSharedFile.h
  arduino1/
    arduino1.ino
  arduino2/
    arduino2.ino


When I include someSharedFile.h in one of my .ino files like this #include "../libs/someSharedFile.h", I get this error No such file or directory.

However, when I move libs/ to arduino1 and include the shared file like this #include "libs/someSharedFile.h" everything works fine.

I am using IDE 1.6.7 on windows 10.
Arduino IDE copies the files to a temp folder. You can see that when you compile in verbose mode.
As such the lib folder is not available.
You should place you libraries in [your home folder]/arduino/libraries