When I test the following example：./create_newcase --res f09_f09_mg17 --compset FHIST
there is an error: ice_comp_mct.F90(592): error #6404: This name does not have a type, and must have an explicit type. [TIMER_CPLSEND]
how to solve it？
It looks like timer_cplsend is available (in components/cice/src/mpi/ice_timers.F90) if CESMCOUPLED is defined. This should be defined by components/cice/cime_config/buildcpp. Can you look at the build command in your ice bldlog output to see if '-DCESMCOUPLED' appears in the build line?