Yeah, that makes sense. It’s also an easy enough workaround that I’m comfortable with that.
Brian > On Apr 6, 2017, at 5:38 PM, Gilles Gouaillardet > <gilles.gouaillar...@gmail.com> wrote: > > Brian, > > there used to be two hwloc.h : the one from the hwloc libraries, and > the one from the OMPI MCA framework. > as a side effect, we could not --with-hwloc=external, but we had to > --with-hwloc=/usr, which leads to add > -I/usr/include to the CPPFLAGS. > so you might end up having > CPPFLAGS=-I/usr/include -I/.../internal_libevent/include ... > which means that if libevent is also installed in /usr, you do not use > the internal libevent as you expected. > > Jeff avoided this scenario by having the option to rename the > framework header file (e.g. opal/mca/hwloc/hwloc.h was moved to > hwloc-internal.h), so --with-hwloc=external works now, and there is no > more -I/usr/include in the CPPFLAGS > > i am not sure we can run into this issue with libevent nor pmix since > their base component do not need to #include > the external pmix.h nor event.h > > note this is not 100% bulletproof yet > if you have both hwloc and libevent in /opt/include and /opt/lib, you > have to --with-hwloc=/opt and you will likely > use the external libevent too > > > Cheers, > > Gilles > > On Thu, Apr 6, 2017 at 3:59 AM, r...@open-mpi.org <r...@open-mpi.org> wrote: >> It could be that a fairly recent change was made to fix that conflict. I >> believe Jeff and Gilles modified the internal hwloc header name(s) to ensure >> we got the right one of those. However, that didn’t get done for libevent >> and/or pmix, so the conflict likely still resides there. >> >>> On Apr 5, 2017, at 11:56 AM, Barrett, Brian via devel >> >>> <devel@lists.open-mpi.org> wrote: >>> >>> Right; that’s what I built. I had both libevent and hwloc installed in >>> /usr. I configured with —with-hwloc=external. It built against the >>> external hwloc and the internal libevent. So there must be some slight >>> variation on the theme I’m missing. >>> >>> Brian >>> >>>> On Apr 5, 2017, at 11:36 AM, r...@open-mpi.org wrote: >>>> >>>> Not quite the problem I mentioned. The problem arises if you want external >>>> hwloc, but internal libevent - and both have external versions in (say) >>>> /usr. If you point hwloc there, then the -I and -L flags will cause us to >>>> pull in the /usr libevent versions instead of the internal ones - and >>>> havoc ensues. >>>> >>>> >>>>> On Apr 5, 2017, at 11:30 AM, Barrett, Brian via devel >>>>> <devel@lists.open-mpi.org> wrote: >>>>> >>>>> All - >>>>> >>>>> On the telecon yesterday, there was discussion of external hwloc causing >>>>> problems if libevent was also installed in the same location. Does >>>>> anyone have details on exactly what the failure mode is? I tried what I >>>>> think is the issue (./configure —with-hwloc=external with libevent >>>>> installed in /usr/ as well) and everything built / works fine. I checked >>>>> the library paths and include and everything looks normal, so I must have >>>>> the wrong scenario. Hints? >>>>> >>>>> Thanks, >>>>> >>>>> Brian >>>>> _______________________________________________ >>>>> devel mailing list >>>>> devel@lists.open-mpi.org >>>>> https://rfd.newmexicoconsortium.org/mailman/listinfo/devel >>>> >>>> _______________________________________________ >>>> devel mailing list >>>> devel@lists.open-mpi.org >>>> https://rfd.newmexicoconsortium.org/mailman/listinfo/devel >>> >>> _______________________________________________ >>> devel mailing list >>> devel@lists.open-mpi.org >>> https://rfd.newmexicoconsortium.org/mailman/listinfo/devel >> >> _______________________________________________ >> devel mailing list >> devel@lists.open-mpi.org >> https://rfd.newmexicoconsortium.org/mailman/listinfo/devel > _______________________________________________ > devel mailing list > devel@lists.open-mpi.org > https://rfd.newmexicoconsortium.org/mailman/listinfo/devel _______________________________________________ devel mailing list devel@lists.open-mpi.org https://rfd.newmexicoconsortium.org/mailman/listinfo/devel
