if test -z "${FFTW3_DIR}" ; then
 echo "You need to set the environment variable FFTW3_DIR to point to the directory containing fftw3.h and libfftw3-3.dll"
 exit 1
fi

if ! test -r "$R_PACKAGE_DIR/libs" ;  then
  mkdir "$R_PACKAGE_DIR/libs"
fi

cp "$FFTW3_DIR/libfftw3-3.dll" "$R_PACKAGE_DIR/libs"