On May 15, 2012, at 10:37 AM, Orion Poplawski wrote: > $ mpicc -showme:link > -pthread -m64 -L/usr/lib64/openmpi/lib -lmpi -ldl -lhwloc > > -ldl and -lhwloc should not be listed. The user should only link against > libraries that they are using directly, namely -lmpi, and they should > explicitly add -ldl and -lhwloc if their code directly uses those libraries. > There does not appear to be any references to libdl or libhwloc symbols in > the openmpi headers which is the other place it could come in.
I just read this a few times, and I admit that I'm a little confused. libmpi does use symbols from libdl; we use it to load OMPI's plugins. So I'm not sure why you're saying we shouldn't -ldl in the wrapper compiler...? libhwloc might be a little questionable here -- I'll have to check to see whether 1.6 uses hwloc only in a plugin or whether it's used in the base library (I don't remember offhand). -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
