Compilation fails on Fedora 32

[jbaayen]

Trying to compile ThirdParty-Mumps produces MPI errors on Fedora 32:

MUMPS/src/dmumps_comm_buffer.F:2667:23:

 2658 |         CALL MPI_PACK( WHAT, 1, MPI_INTEGER,
      |                       2
......
 2667 |         CALL MPI_PACK( LIST_SLAVES, NSLAVES, MPI_INTEGER,
      |                       1
Error: Rank mismatch between actual argument at (1) and actual argument at (2) (scalar and rank-1)

[svigerske]

I don't have a GCC 10 yet and don't know much of Fortran either.

Anyone has a patch that we could apply to the Mumps (4.10.0) source to work around this?

[svigerske]

I hear that adding the Fortran compiler flag -fallow-argument-mismatch (GCC >= 10 only) or -std=legacy (implies -fallow-argument-mismatch with GCC 10) may help to work around this (that is, it seems to help with a error on Mumps 5 source).

With the build system, use ADD_FCFLAGS=-fallow-argument-mismatch as argument to configure.

[jbaayen]

I can confirm that with FFLAGS=-fallow-argument-mismatch, the package compiles.

[AllenShi666]

I can confirm that with FFLAGS=-fallow-argument-mismatch, the package compiles.

Hi, I am currently using Mingw64 for windows to compile Ipopt and experiencing the same issue with Mumps, this happens whenever I use the make command. I was wondering where exactly do I add the FFLAGS=-fallow-argument-mismatch ? Is it in the makefile? Thank you in advance.

[svigerske]

I would suggest to rather set ADD_FCFLAGS=-fallow-argument-mismatch. This can be given as argument to configure.

[AllenShi666]

I would suggest to rather set ADD_FCFLAGS=-fallow-argument-mismatch. This can be given as argument to configure.

Hi, I tried to add this line ADD_FCFLAGS=-fallow-argument-mismatch into configure file using notepad++, that doesn't work for me. I also try ./configure ADD_FCFLAGS=-fallow-argument-mismatch on the command line, that doesn't work either. Am I doing it the correctly? If not, could you be more specific as to where to add/use this line ADD_FCFLAGS=-fallow-argument-mismatch. Thank you!

[svigerske]

Hmm, maybe try ./configure ADD_FCFLAGS=-std=legacy instead. And please provide some logs, etc, from calling make with V=1. This should show the compiler call, including all the flags that are used.
In principal, you could also edit Makefile after configure finished and add the flags into there somewhere.

[AllenShi666]

Thanks for your advice. The error was gone by adding FFLAGS=-fallow-argument-mismatchto the configure file.

[Ishanki]

Hi, I can confirm this is an issue. I used the flag ADD_FCFLAGS=-fallow-argument-mismatch which worked, i.e.
./configure ADD_FCFLAGS=-fallow-argument-mismatch

[svigerske]

I would think that this should be fixed in the MUMPS source, but with the new MUMPS 5.3.3 they only added a note to use the same workaround to their INSTALL file:

* gfortran-10
  -----------

For MUMPS to compile with gfortran-10, the option '-fallow-argument-mismatch'
should be added to OPTF in your Makefile.inc