Make sure to "make clean", too -- just to clean up any kruft that may be left over from a prior build that is not necessarily compatible with your new set of configure/build/link options.
On Oct 25, 2010, at 2:35 PM, Ralph Castain wrote: > I think you are missing the --host flag, so it still thinks it is building > for the current machine. > > > On Oct 25, 2010, at 12:29 PM, saahil...@gmail.com wrote: > >> Ralph, >> As you suggested, I configured with the following options - >> >> ./configure --prefix=/home/wolf/openmpi/ CFLAGS=-m32 CXXFLAGS=-m32 >> FFLAGS=-m32 FCFLAGS=-m32 --build=i686-pc-linux-gnu LDFLAGS=-m32 >> >> I'm afraid I am still getting the same error messages while making as I did >> last time. Did I fail to understand what you said? Am I doing something >> wrong here? >> >> Regards, >> Saahil >> >> On Oct 25, 2010 11:35pm, Ralph Castain <r...@open-mpi.org> wrote: >>> Do ./configure --help and you'll see options for specifying the host and >>> build target. You need to do that when cross-compiling. >>> >>> >>> >>> >>> >>> On Oct 25, 2010, at 12:01 PM, saahil...@gmail.com wrote: >>> >>> >>> >>>> ---------- Forwarded message ---------- >>> >>>> From: saahil...@gmail.com >>> >>>> Date: Oct 25, 2010 11:26pm >>> >>>> Subject: Cross compiling for 32 bit from a 64 bit machine >>> >>>> To: us...@open-mpi.org >>> >>>> CC: >>> >>>> >>> >>>> >>> >>>>> Hello, >>> >>>>> I am a beginner using Open MPI to set up a simple Beowulf cluster of PCs >>>>> for my Distributed Systems lab. My head node is my x86_64 architecture >>>>> Fedora 12 machine. The rest of my nodes are i386 Fedora 13 machines. I >>>>> understand that I need to compile Open MPI with CFLAGS=-m32 so that I can >>>>> use -m32 flag to create a 32 bit compatible binary. I could not do this >>>>> using yum install. So I am using the tarball for Open MPI 1.5. >>> >>>>> my configure command is as follows - >>> >>>>> >>> >>>>> ./configure --prefix=/home/wolf/openmpi/ CFLAGS=-m32 CXXFLAGS=-m32 >>>>> FFLAGS=-m32 FCFLAGS=-m32 >>> >>>>> >>> >>>>> This works fine. However, while doing make I get the following errors - >>> >>>>> >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `../opal/libltdl/.libs/libltdlc.a(libltdlc_la-preopen.o)' is incompatible >>>>> with i386 output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `../opal/libltdl/.libs/libltdlc.a(libltdlc_la-lt__alloc.o)' is >>>>> incompatible with i386 output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `../opal/libltdl/.libs/libltdlc.a(libltdlc_la-lt_dlloader.o)' is >>>>> incompatible with i386 output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `../opal/libltdl/.libs/libltdlc.a(libltdlc_la-lt_error.o)' is >>>>> incompatible with i386 output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `../opal/libltdl/.libs/libltdlc.a(libltdlc_la-ltdl.o)' is incompatible >>>>> with i386 output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `../opal/libltdl/.libs/libltdlc.a(libltdlc_la-slist.o)' is incompatible >>>>> with i386 output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `../opal/libltdl/.libs/libltdlc.a(lt__strl.o)' is incompatible with i386 >>>>> output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `../opal/libltdl/.libs/libltdlc.a(libltdlcS.o)' is incompatible with i386 >>>>> output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `../opal/libltdl/.libs/libltdlc.a(dlopen.o)' is incompatible with i386 >>>>> output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `asm/.libs/libasm.a(atomic-asm.o)' is incompatible with i386 output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `event/.libs/libevent.a(signal.o)' is incompatible with i386 output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `event/.libs/libevent.a(epoll.o)' is incompatible with i386 output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `event/.libs/libevent.a(poll.o)' is incompatible with i386 output >>> >>>>> /usr/bin/ld: i386:x86-64 architecture of input file >>>>> `event/.libs/libevent.a(select.o)' is incompatible with i386 output >>> >>>>> /usr/bin/ld: final link failed: Invalid operation >>> >>>>> collect2: ld returned 1 exit status >>> >>>>> make[2]: *** [libopen-pal.la] Error 1 >>> >>>>> make[2]: Leaving directory `/home/wolf/Downloads/openmpi-1.5/opal' >>> >>>>> make[1]: *** [all-recursive] Error 1 >>> >>>>> make[1]: Leaving directory `/home/wolf/Downloads/openmpi-1.5/opal' >>> >>>>> make: *** [all-recursive] Error 1 >>> >>>>> >>> >>>>> >>> >>>>> Any idea as to how to go around fixing this? Any help would be greatly >>>>> regarded, since I'm supposed to meet a deadline, and half of my semester >>>>> has been spent trying to get either LAM-MPI or Open MPI (which I was >>>>> suggested I shift to) to work. >>> >>>>> Thank you very much. >>> >>>>> >>> >>>>> Regards, >>> >>>>> Saahil_______________________________________________ >>> >>>> users mailing list >>> >>>> us...@open-mpi.org >>> >>>> http://www.open-mpi.org/mailman/listinfo.cgi/users >>> >>> >>> >>> >>> >>> _______________________________________________ >>> >>> users mailing list >>> >>> us...@open-mpi.org >>> >>> http://www.open-mpi.org/mailman/listinfo.cgi/users >>> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> http://www.open-mpi.org/mailman/listinfo.cgi/users > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users -- Jeff Squyres jsquy...@cisco.com For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
