How to tell Xcode how to include a library specified with angle brackets?
Specify the include path using the compiler flag -I, or the Xcode build settings alias HEADER_SEARCH_PATHS. Of course, you can use build variables when doing so.
Just stumbled upon the same issue, there are two types of search paths in Xcode:
Header Search PathsUser Header Search PathsIf you add your own include folders into Header Search Paths, you can use angled brackets.