I missed running make clean before this (so it was still trying to build against a version of mpich I’d also installed). However, once I realised this, I still have issues:
h5repack tests failed with 1 errors.
Makefile:1451: recipe for target 'h5repack.sh.chkexe_' failed
H5repack error - make check and HDF5 make test in error suggest that these tests are unreliable and to use the -i flag. This does work, but it would be good to have some confirmation from an HDF5 developer if there are plans to fix the tests. I’m really not comfortable with hiding errors rather than fixing them, particularly for the community I’m supporting.