Problem in installing rgbdslam_freiburg
when I run the "rosmake rgbdslam_freiburg" command, the "../src/SiftGPU/SiftGPU.cpp:1181:18: error: ‘chdir’ was not declared in this scope make[1]: * [../../../build/siftgpu/SiftGPU.o] Error 1" error occurs, I don't know what's wrong with it?
finally this messages appears: "CMake Error at CMakeLists.txt:123 (MESSAGE): SiftGPU cannot be compiled. Returned: 2"