hello, I am trying to compile xrootd on this platform on a test machine: the next couple of servers I am going to have in a few weeks will be working on that OS with Opteron CPUs (SUN v40z). I had problems when compiling XrdSecpwdSrvAdmin.cc: Creating executable ../../bin/sunx86_510/xrdpwdadmin ld: fatal: file ../../obj/sunx86_510/XrdSecpwdSrvAdmin.o: wrong ELF class: ELFCLASS64 ld: fatal: File processing errors. No output written to ../../bin/sunx86_510/xrdpwdadmin gmake[4]: *** [../../bin/sunx86_510/xrdpwdadmin] Error 1 gmake[3]: *** [SunOSall] Error 2 gmake[2]: *** [all] Error 2 gmake[1]: *** [XrdSecpwd] Error 2 gmake: *** [all] Error 2 CC is being used: > CC -V CC: Sun C++ 5.7 Patch 117831-03 2005/07/21 I tried to remove this module as it is not necessary for me at this point, however I ended up with a xrootd binary I was not able to execute. So there could be something trivial missing in the installation of the dev machine (might be possible as I noticed that there are stuff not being there) or something that I don't know of. The script "configure" had apparently no problem to detect the right architecture. thanks for any hints, JY