I understand that hwloc requires C99 support. However, for compilers
that don't support C99, would you be willing to gracefully abort during
configure instead of failing at make time?
I agree that most compilers today probably support C99, but whether to
drop C89-only support is a policy decision we are yet to make in MPICH2,
and will need the above patch to get hwloc integrated cleanly in all our