Should be fixed by
https://github.com/open-mpi/hwloc/commit/9549fd59af04dca2e2340e17f0e685f8c552d818
Thanks for the report
Brice



Le 02/05/2016 21:53, Paul Hargrove a écrit :
> I have a linux/ppc64 host running Fedora 20.
> I have configured the 2.0.0rc2 tarball with
>
>     --prefix=[....] --enable-debug \
>     CFLAGS=-m32 --with-wrapper-cflags=-m32 \
>     CXXFLAGS=-m32 --with-wrapper-cxxflags=-m32 \
>     FCFLAGS=-m32 --with-wrapper-fcflags=-m32 --disable-mpi-fortran
>
> [yes, I know the fortran flags are pointless with --disable-mpi-fortran]
>
> My build is failing (as shown at the bottom of this email) in
> tools/wrappers with undefined references to udev symbols.
> The udev configure probe run by the embedded hwloc seemed happy enough:
>
>     --- MCA component hwloc:hwloc1112 (m4 configuration macro,
>     priority 90)
>     checking for MCA component hwloc:hwloc1112 compile mode... static
>     checking hwloc building mode... embedded
>     [...]
>     checking libudev.h usability... yes
>     checking libudev.h presence... yes
>     checking for libudev.h... yes
>     checking for udev_device_new_from_subsystem_sysname in -ludev... no
>
>
> However, looking at config.log one can see that despite the
> presence/usability of libudev.h there is NOT a libudev library present
> for "-m32".
> This is apparent because the probe
> for udev_device_new_from_subsystem_sysname failed with a message about
> the *library* not being found rather than about an undefined symbol.
>
>
> I *can* work-around this issue by passing  --disable-libudev to configure.
> However, it would seem appropriate to check for a usable libudev
> library in addition to the header.
>
> -Paul
>
>
> Making all in tools/wrappers
> make[2]: Entering directory
> `/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/BLD/opal/tools/wrappers'
> depbase=`echo opal_wrapper.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\
> gcc -std=gnu99 "-DEXEEXT=\"\"" -I.
> -I/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/openmpi-2.0.0rc2/opal/tools/wrappers
> -I../../../opal/include -I../../../ompi/include
> -I../../../oshmem/include
> -I../../../opal/mca/hwloc/hwloc1112/hwloc/include/private/autogen
> -I../../../opal/mca/hwloc/hwloc1112/hwloc/include/hwloc/autogen
> -I../../../ompi/mpiext/cuda/c  
> -I/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/openmpi-2.0.0rc2 
> -I../../..
> -I/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/openmpi-2.0.0rc2/opal/include
> -I/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/openmpi-2.0.0rc2/orte/include
> -I../../../orte/include
> -I/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/openmpi-2.0.0rc2/ompi/include
> -I/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/openmpi-2.0.0rc2/oshmem/include
>  
> -I/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/openmpi-2.0.0rc2/opal/mca/hwloc/hwloc1112/hwloc/include
> -I/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/BLD/opal/mca/hwloc/hwloc1112/hwloc/include
> -I/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/openmpi-2.0.0rc2/opal/mca/event/libevent2022/libevent
> -I/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/openmpi-2.0.0rc2/opal/mca/event/libevent2022/libevent/include
> -I/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/BLD/opal/mca/event/libevent2022/libevent/include
>  -m32 -g -finline-functions -fno-strict-aliasing -pthread -MT
> opal_wrapper.o -MD -MP -MF $depbase.Tpo -c -o opal_wrapper.o
> /home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/openmpi-2.0.0rc2/opal/tools/wrappers/opal_wrapper.c
> &&\
> mv -f $depbase.Tpo $depbase.Po
> /bin/sh ../../../libtool  --tag=CC   --mode=link gcc -std=gnu99  -m32
> -g -finline-functions -fno-strict-aliasing -pthread   -o opal_wrapper
> opal_wrapper.o ../../../opal/libopen-pal.la <http://libopen-pal.la>
> -lrt -lm -lutil
> libtool: link: gcc -std=gnu99 -m32 -g -finline-functions
> -fno-strict-aliasing -pthread -o .libs/opal_wrapper opal_wrapper.o
>  ../../../opal/.libs/libopen-pal.so -ldl -lrt -lm -lutil -pthread
> -Wl,-rpath
> -Wl,/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/INST/lib
> ../../../opal/.libs/libopen-pal.so: undefined reference to `udev_new'
> ../../../opal/.libs/libopen-pal.so: undefined reference to
> `udev_device_new_from_subsystem_sysname'
> ../../../opal/.libs/libopen-pal.so: undefined reference to `udev_unref'
> ../../../opal/.libs/libopen-pal.so: undefined reference to
> `udev_device_get_property_value'
> ../../../opal/.libs/libopen-pal.so: undefined reference to
> `udev_device_unref'
> collect2: error: ld returned 1 exit status
> make[2]: *** [opal_wrapper] Error 1
> make[2]: Leaving directory
> `/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/BLD/opal/tools/wrappers'
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory
> `/home/phargrov/OMPI/openmpi-2.0.0rc2-linux-ppc32-gcc/BLD/opal'
> make: *** [all-recursive] Error 1
>
>
>
>
> -- 
> Paul H. Hargrove                          phhargr...@lbl.gov
> <mailto:phhargr...@lbl.gov>
> Computer Languages & Systems Software (CLaSS) Group
> Computer Science Department               Tel: +1-510-495-2352
> Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900
>
>
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> Link to this post: 
> http://www.open-mpi.org/community/lists/devel/2016/05/18869.php

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