Problem building CUDA 4.0 SDK examples


g++ -W -Wall -Wimplicit -Wswitch -Wformat -Wchar-subscripts -Wparentheses -Wmultichar -Wtrigraphs -Wpointer-arith -Wcast-align -Wreturn-type -Wno-unused-function -m64 -fno-strict-aliasing -I. -I/usr/local/cuda/include -I…/…/inc -I…/…/common/npp/include -I…/FreeImage/include -DUNIX -O2 -o obj/x86_64/release/ImageIO.cpp.o -c ImageIO.cpp
In file included from ImageIO.h:32,
from ImageIO.cpp:30:
ImagesCPU.h:37:17: error: npp.h: No such file or directory
In file included from ImagesNPP.h:35,
from ImageIO.h:33,
from ImageIO.cpp:30:
ImageAllocatorsNPP.h:34:18: error: nppi.h: No such file or directory

I get that error when running “make verbose=1” from my CUDA4 SDK directory. It looks like it missing some NPP stuff. I thought that was all included in the cuda4 bundle? Is it missing something from the package?