Comment (by Roland Haas):

This code as added to support gfortran-10.

I am not quite sure I fully understand the error message that gfortran-4.8.5 produces, namely the code that it complains about is:

CCTK_POINTER function CCTK_PointerTo(var)
  use iso_c_binding, only: c_loc

  implicit none

  type(*), dimension(..), TARGET :: var
  CCTK_POINTER :: address

  address = transfer(c_loc(var), address)

  CCTK_PointerTo = address
end function

which has full specification for var and an interface for c_loc from the iso_c_binding module.

If possible I would suggest using a newer compiler, eg gfortran-6 should work. If that is not possible you will have to either go back to check out ET_2020_05_v0 instead of the branch ET_2020_05 or (manually) edit configs/sim/config-data/cctk_Config.h and change HAVE_CCTK_F_TYPE_STAR from 1 to 0.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2455/cannot-build-et-assumed-rank-argument