In general, we are in Xcode configuration contains the project directory head file, all related to the relative path and absolute path, if you only use this project, with the absolute path of the problem is not big, but if you send the project to others, others will change this absolute path, the shortcomings of the absolute path immediately appeared.
So when modifying the library search Paths and Header search Paths this option, use
"$ (srcroot)/current project name/need to include header file Folder"
After copying the string in the double quotes above, you will find that the "$ (srcroot)" will automatically become the directory where the project is currently located.
So that you can, to other people, others do not have to modify the path.
Note: Changing the format can find a good project, see the contents of the Library Search paths
Xcode environment variables and path settings iOS
