Help on some downstream feedstocks -fallow-argument-mismatch

[hmaarrfk]

Comment:

• Rebuild for hdf51122 conduit-feedstock#27
• Rebuild for hdf51122 sirius-feedstock#17

Seem to be suffering from a bug you all resolved wrt -fallow-argument-mismatch

Your help is a ppreciated

[dalcinl]

Maybe it is a problem within cmake's FindMPI? I see this line in the logs:

-- BLT MPI Compile Flags:  -fallow-argument-mismatch

That flag is only valid for Fortran, but maybe cmake is somehow picking it and passing it down to the C compiler?

clang-14: error: unknown argument: '-fallow-argument-mismatch'

[hmaarrfk]

Looking at the PC file, it does appear as a fflag.

[dalcinl]

Looking at the PC file, it does appear as a fflag.

What about running mpicc -show and mpifort -show? Any chance cmake's FindMPI is picking the flag from the later, but then wrongly adding it to the flags for the C compiler?

[hmaarrfk]

Thank you for the tips. I likely have limited time. But I'll let the original feedstock maintainers take over with your input here and there!

[cyrush]

Hi All,

I found a resolution.

FindMPI is doing the correct thing, the problem is in conduit's build system.

We have an mpi smoke test that is combining all c + fortran flags reported and passing the combined flags to the c compiler -- which clang is (rightly) unhappy with.

I have a fix to filter the flags in conduit's build system and avoid the problem that will be in our next release.