!--- Coupler related preprocessor definitions

#define use_mpi

!xxx #undef couple_serial

!xxx #define use_NEMO
!xxx #undef use_CanOM4
!xxx 
!xxx #ifdef use_CanOM4
!xxx #  define biogeochem
!xxx #  define coupler_ctem
!xxx #  undef carbon
!xxx #else
!xxx #  undef biogeochem
!xxx #  undef coupler_ctem
!xxx #  undef carbon
!xxx #endif