Min RK

No builds fail. As mentioned in the original report, adding `-I$PREFIX/lib` to OMPI_FCFLAGS (or FFLAGS if not using wrappers) is sufficient to get working cross-compilation. This issue is not about...

Sorry for the miscommunication. Yes, I should not have mentioned my lack of understanding of which cases were affected because it was not relevant to the issue at hand, and...

Thanks. I'm trying really hard to be clear that I'm not asking for help building against mpi, nor am I trying to claim that anything doesn't work as intended. I...

Thanks for the context! It's definitely not a strong need, nothing is really hindered by the unusual install location, so no rush at all. Honestly, this is mostly an aesthetic...

I think the notion of a 'module' dir is not unusual, though includedir is still probably the most sensible default value for it. I think debian's openmpi-dev follows this pattern...

Thanks, that's what I was referring to. `/usr/lib/x86_64-linux-gnu/fortran/gfortran-mod-15/openmpi` is the moduledir that includes a copy of `mpi.h` and `mpi.mod` and is patched to be `includedir` for mpifort.

FWIW, we are exploring the script wrappers for cross compilation in Conda-forge, which prompted #12609. This is motivated largely by the fact that cross compilation for mpich has been far...

@jsquyres yes, that fixes it. Thank you! Sorry for the weird link, that fork keeps coming up first in my searches. Fixed it.