since ibv_create_xrc_rcv_qp is now deprecated, and in order to
be "future-proof", we have to consider the case in which only XRC Domains are supported.
also, correctly handle distro that ship broken ibverbs devel headers
Thanks Paul Hargrove for the detailled report.
@ggouaillardet is likely offline for the weekend, but master is broken
on RHEL 6.5 systems that do not have MOFED installed. So I'm taking
the liberty of revering this commit; I'm guessing Gilles will fixup
and re-commit next week.
This reverts commit 77f8282d51.
since ibv_create_xrc_rcv_qp is now deprecated, and in order to
be "future-proof", we have to consider the case in which only XRC Domains are supported.
Thanks Paul Hargrove for the detailled report.
Some systems have XRC symbols in their libibverbs libraries, but do
not have the appropriate XRC bits in their devel headers (cough cough
RHEL 6.5 libibverbs-rocee-*.x86-64.rpm cough cough).
So expand the XRC config checks to ensure that we can actually find
one of the XRC constants that we need to compile XRC code before
ruling that we can actually build XRC support.
