Originally Posted by oblix
Relative paths don't work. It has to be absolute path.
eg EXTRA_CFLAGS += -I$(PWD)/../../common/
Welcome to LQ
If your issue is really solved, you can if you like, use the "Thread Tools" menu near the top of the page, and officially mark the thread [solved]
Also, I noticed that you posted your thread in more than one forum; please do not do that -- if you discover that you should have posted your question in a different place, please use the REPORT button and ask for it to be moved for you
I'll have your other thread closed.