cannot find header search path for xcode 4.5

I am trying to add a header search path in my project so I go to project > build settings and down to the search path tabs. However there is no option for adding header search paths only framework and library. I am using xcode 4.5 but wondering if that is the problem since if I open another project ( from the internet) I see header search paths, just not in my project. Ps. I also don't see the user defined search that some people mentioned in other post.

Thank you

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I recommend using the search to find things like this. There's a search box in the upper right corner of the build settings:

链接地址: http://www.djcxy.com/p/42638.html

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