/home/rahmu/OpenCV-2.1.0/src/cxcore/cxcore_pch_dephelp.cxx:1:57: error: /home/rahmu/OpenCV-2.1.0/src/cxcore/_cxcore.h: No such file or directory
/home/rahmu/OpenCV-2.1.0/src/cxcore/cxcore_pch_dephelp.cxx:1:57: error: one or more PCH files were found, but they were invalid
/home/rahmu/OpenCV-2.1.0/src/cxcore/cxcore_pch_dephelp.cxx:1:57: error: use -Winvalid-pch for more information
make[2]: *** [src/cxcore/CMakeFiles/cxcore_pch_dephelp.dir/cxcore_pch_dephelp.o] Error 1
make[1]: *** [src/cxcore/CMakeFiles/cxcore_pch_dephelp.dir/all] Error 2
make: *** [all] Error 2