./configure -c config/gfortran_mpi.cfg about qp2

[scemama]

F90-S-0038-Symbol, derf, has not been explicitly declared

Your Fortran compiler does not understand the derf intrinsic function, which computes the error function in double precision. You can try to replace derf by erf in the code which is more standard
.
The same kind of error happens with the Nvidia Fortran compiler which is missing some Fortran2008 intrinsic like shiftl and shiftr. So for the moment, only gfortran and ifort are officially supported.

[abigcoder04]

Dear scemama,
I tried to replace derf by erf in routines_exc_sr_lda.irp.F90, but it seems that it automatically changes back to derf when making. I would like to ask in which file to replace derf with erf. I hope I can get your answer.

[scemama]

You should replace it in routines_exc_sr_lda.irp.f, which is used to generate routines_exc_sr_lda.irp.F90

[abigcoder04]

I tried to replace derf by erf in routines_exc_sr_lda.irp.f just now, but it seems that it automatically changes back to derf and report the same error when making.