Missing CROSS_F77_SIZEOF_LOGICAL

[minrk]

missing env generated with perl maint/gen_cross.pl, as suggested in pmodels/mpich#5380 (comment)

I believe this closes #85, but I don't know how to add a test

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[dalcinl]

The issue is related to cross-compiling, and in that case we cannot compile code and run a test to check that MPI_LOGICAL is not MPI_DATATYPE_NULL.

The only check I can imagine is to use grep and fail if the MPI_LOGICAL=MPI_DATATYPE_NULL string is in mpif.h, but I'm not really sure the extra work is worth it.

[minrk]

@dalcinl yeah, that's kind of what I was thinking.

conda-forge/mumps-feedstock#102 should show whether it worked, though not before merging.