Below is the corresponding failure at build time (rather than link time)
for "clang -m32" on Linux/x86-64.
-Paul
libtool: compile: clang -DHAVE_CONFIG_H -I.
-I/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/opal
-I../opal/include -I../ompi/include -I../oshmem/include
-I../opal/mca/hwloc/hwloc1113/hwloc/include/private/autogen
-I../opal/mca/hwloc/hwloc1113/hwloc/include/hwloc/autogen
-I../ompi/mpiext/cuda/c
-I/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1
-I..
-I/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/opal/include
-I/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/orte/include
-I../orte/include
-I/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/ompi/include
-I/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/oshmem/include
-I/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/BLD/opal/mca/event/libevent2022/libevent/include
-I/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/opal/mca/event/libevent2022/libevent
-I/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/opal/mca/event/libevent2022/libevent/include
-I/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/BLD/opal/mca/hwloc/hwloc1113/hwloc/include
-I/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/opal/mca/hwloc/hwloc1113/hwloc/include
-DOPAL_CONFIGURE_HOST=\"pcp-f-5\" -m32 -g -finline-functions
-fno-strict-aliasing -pthread -MT class/opal_list.lo -MD -MP -MF
class/.deps/opal_list.Tpo -c
/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/opal/class/opal_list.c
-fPIC -DPIC -o class/.libs/opal_list.o
In file included from
/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/opal/class/opal_list.c:22:
In file included from
/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/opal/class/opal_list.h:73:
In file included from
/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/opal/class/opal_object.h:126:
In file included from
/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/opal/threads/thread_usage.h:30:
In file included from
/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/opal/include/opal/sys/atomic.h:155:
/scratch/phargrov/OMPI/openmpi-3.0.0rc1-linux-x86_64-clang-m32/openmpi-3.0.0rc1/opal/include/opal/sys/gcc_builtin/atomic.h:150:12:
error: cannot compile this atomic library call yet
return __atomic_add_fetch (addr, delta, __ATOMIC_RELAXED);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
On Mon, Jul 3, 2017 at 3:55 PM, Paul Hargrove <phhargr...@lbl.gov> wrote:
> On every ILP32 build I try w/ gcc, I get the following.
>
> ../../../opal/.libs/libopen-pal.so: undefined reference to
> `__atomic_fetch_add_8'
> collect2: error: ld returned 1 exit status
> make[2]: *** [opal_wrapper] Error 1
>
> This includes at least x86 and ppc32 (probably MIPS and ARM, but those are
> too slow to have finished configure yet).
>
> -Paul
>
>
> --
> Paul H. Hargrove phhargr...@lbl.gov
> Computer Languages & Systems Software (CLaSS) Group
> Computer Science Department Tel: +1-510-495-2352
> <(510)%20495-2352>
> Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
> <(510)%20486-6900>
>
--
Paul H. Hargrove 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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