I am trying to build cegui on Mac OS X 10.9.4. First, I am building the dependencies from here.
I generate the Xcode project files without any problems using cmake. When I try to build the project using the ALL_BUILD target, it fails to build the IL library. 
I have an endian.h file at /usr/include/machine/ and /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/machine. I tried adding these paths to the header search path in Xcode but the error remains.