troubles compilling OpenNi for ofxOpenni

hello!
I’m trying to compile OpenNi from Roxlu for OF but can’t! I get always

/Users/jonasfehr/openni_dev/OpenNI/Source/OpenNI/./Linux-x86/XnUSBLinux-x86.cpp
CMake Error at CMakeLists.txt:123 (add_subdirectory):
add_subdirectory given source “./Samples/ofxOpenNI” which is not an
existing directory.

– Configuring incomplete, errors occurred!
noname:openFrameworks jonasfehr$

when I try to make the

./build.sh

any ideas? I have the folder openni_dev in the same directory as openFramework…
OpenNi examples works, when I use the version from the Openni website…

thanks!