I see a failure on OpenBSD when building ROMIO:
libtool: compile: gcc -std=gnu99 -DHAVE_CONFIG_H -I.
-I/home/phargrov/OMPI/openmpi-1.8.6rc1-openbsd5-amd64/openmpi-1.8.6rc1/ompi/mca/io/romio/romio
-I./adio/include -DOMPI_BUILDING=1
-I/home/phargrov/OMPI/openmpi-1.8.6rc1-openbsd5-amd64/openmpi-1.8.
I have determined that 1.8.5 also fails in the same manner on this host.
Configuring with --disable-io-romio allows 1.8.6rc1 to build correctly.
So, the problem appears to be in ROMIO as it relates to OpenBSD-5.7.
Since this is *not* a regression I feel this should not delay a 1.8.6
release unless
