I'm getting the following errors compiling ccminer v1.1 on linux.  I'm using cuda6 libraries.  Is it possible that the __shfl operation isn't in there?

groestl_functions_quad.cu(258): error: identifier "__shfl" is undefined

groestl_functions_quad.cu(263): error: identifier "__shfl" is undefined

groestl_functions_quad.cu(268): error: identifier "__shfl" is undefined

bitslice_transformations_quad.cu(: error: identifier "__shfl" is undefined

bitslice_transformations_quad.cu(414): error: identifier "__shfl" is undefined