file(GLOB OPS_SRCS *.cpp *.cu)
file(GLOB OPS_HEADS *.h *.hpp *.cuh)
set(BACKEND_OPS_SRCS ${BACKEND_OPS_SRCS} ${OPS_SRCS} ${OPS_HEADS})
set(BACKEND_OPS_SRCS ${BACKEND_OPS_SRCS} PARENT_SCOPE)