[CMake] FFTW_FOUND is true even if it is not found?

[David Doria]

Using this FindFFTW.cmake:

http://code.google.com/p/qmcpack/source/browse/trunk/CMake/FindFFTW.cmake?spec=svn4506&r=4506

FFTW_FOUND is true even though:

FFTW_INCLUDE_DIR = FFTW_INCLUDE_DIR-NOTFOUND
FFTW_LIBRARIES = FFTW_LIBRARIES_NOTFOUND

Can anyone explain that?

Thanks,

David