problem in installing wannier_tool-2.6.2

[Nagasapa]

Dear Sir and wanniertools user
I am new to this field and my apology if i am raising any silliy questions.
I was trying to install wannier-tools -2.6.2 in ubuntu following the instruction provided in the INSTALL file after running the make command i am getting this error message. I have used 'Makefile.gfortran-mpi' as my Makefile. the error message as follows
mpif90 -cpp -DMPI -ffree-line-length-512 -g -c symmetry.f90
symmetry.f90:427:24:

425 | call mpi_allreduce(tau_find_t,tau_find_t_mpi,size(tau_find_t),&
| 2
426 | mpi_dp,mpi_sum,mpi_cmw,ierr)
427 | call mpi_allreduce(op_tau,op_tau_mpi,size(op_tau),&
| 1
Error: Type mismatch between actual argument at (1) and actual argument at (2) (INTEGER(4)/REAL(8)).
symmetry.f90:429:24:

425 | call mpi_allreduce(tau_find_t,tau_find_t_mpi,size(tau_find_t),&
| 2
......
429 | call mpi_allreduce(ntaup,ntaup_mpi,size(ntaup),&
| 1
Error: Type mismatch between actual argument at (1) and actual argument at (2) (INTEGER(4)/REAL(8)).
make: *** [Makefile:42: symmetry.o] Error 1

could you please help me resolve this error.
Thank you .

[rlpitts]

Still a problem in version 2.7. The issue is that this program was built on the old MPICH standards. Most MPI distributions in use now are stricter about checking for communicators getting reused for different data types, and they don't like it. If you comment either the one MPI_AllReduce() calls taking data of type double, or the two taking data of type integer, and recompile with the rest, it works without error. MPI_SUM is a bit different between the two data types, and MPI doesn't seem to like switching between the two once one has been chosen for a give communicator.

Anyway, the problem can be sidestepped by adding -fallow-argument-mismatch into the F90 line of the gfortran-mpi version of the Makefile (and, I presume, any other Makefile version with that line), but the designers really should fix this by updating the symmetry.f90 file to use different communicator names for the different variable types.