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How to make opencv2.framework with opencv_contrib

From OpenCV 3.0.0-rc1, --contrib option is added to platforms/ios/build_framework.py.
As a result, we can specify opencv_contrib's path by this option. https://github.com/Itseez/opencv/blob/master/platforms/ios/build_framework.py#L142

So, I tried to build opencv2.framework with opencv_contrib in the following steps.

get the code of opencv-3.0.0-rc1.
get the code of opencv_contrib.
run python opencv-3.0.0-rc1/platforms/ios/build_framework.py ios to generate opencv2.framework.
python opencv-3.0.0-rc1/platforms/ios/build_framework.py --contrib opencv_contrib ios_contrib to generate opencv2_contrib.framework.

And, I made iOS project using Xcode. And, I imported opencv2.framework and opencv2_contrib.framework to my project.

After that I added the following code to my project.

#import <opencv2/core.hpp>
#import <opencv2/features2d.hpp>
#import <opencv2_contrib/xfeatures2d.hpp>

But, the following build error occurs.

/Users/xxxx/dev/ios_contrib/opencv2_contrib.framework/Headers/xfeatures2d.hpp:43:10: 'opencv2/xfeatures2d/nonfree.hpp' file not found

Is this procedure is wrong to use opencv2.framework with opencv_contrib?