[mvapich-discuss] MVAPICH2 1.9b build is broken with Clang

[Dmitri Gribenko]

Hello,

MVAPICH2 1.9b build is broken with Clang 3.2.  I don't know if this
combination ever worked, but MPICH builds with Clang just fine.

I configure with:

./configure --prefix=/o./configure
--prefix=/opt/eb/software/MVAPICH2/1.9b-ClangGCC-1.1.2
--with-rdma=gen2 --with-thread-package=pthreads --enable-fast
--enable-shared --enable-sharedlibs=gcc --enable-f77 --enable-fc
--enable-cxx

The first error is during linking cpi in examples.  That one can be
worked around by using a separate hwloc, instead of relying on
embedded one.

The second error is during linking osu_benchmarks:

user at host osu_benchmarks$ make V=1
/bin/sh ../libtool  --tag=CC   --mode=link clang  -O2 -march=native
-DNDEBUG -DNVALGRIND ../lib/libpmpich.la ../lib/libmpich.la -L/lib
-L/lib -L/opt/eb/software/hwloc/1.6.2-ClangGCC-1.1.2/lib  -L/lib
-Wl,-rpath,/lib -L/lib -Wl,-rpath,/lib -L/lib -L/lib -o osu_alltoallv
osu_alltoallv.o  -libmad -libumad -libverbs -lrt -lhwloc -lhwloc -lm
-lpthread
libtool: link: clang -O2 -march=native -DNDEBUG -DNVALGRIND -Wl,-rpath
-Wl,/lib -Wl,-rpath -Wl,/lib -o .libs/osu_alltoallv osu_alltoallv.o
../lib/.libs/libpmpich.so -L/lib
-L/opt/eb/software/hwloc/1.6.2-ClangGCC-1.1.2/lib -L./src/mpl
-L./src/openpa/src -lmpl -lopa
/home/easybuild/.local/easybuild/build/MVAPICH2/1.9b/ClangGCC-1.1.2/mvapich2-1.9b/lib/.libs/libmpich.so
../lib/.libs/libmpich.so
/home/easybuild/.local/easybuild/build/MVAPICH2/1.9b/ClangGCC-1.1.2/mvapich2-1.9b/src/mpl/.libs/libmpl.so
/home/easybuild/.local/easybuild/build/MVAPICH2/1.9b/ClangGCC-1.1.2/mvapich2-1.9b/src/openpa/src/.libs/libopa.so
-libmad -libumad -libverbs -lrt
/opt/eb/software/hwloc/1.6.2-ClangGCC-1.1.2/lib/libhwloc.so -ldl -lm
-lpthread -Wl,-rpath
-Wl,/opt/eb/software/MVAPICH2/1.9b-ClangGCC-1.1.2/lib -Wl,-rpath
-Wl,/opt/eb/software/hwloc/1.6.2-ClangGCC-1.1.2/lib
/usr/bin/ld: cannot find -lmpl
clang-3: error: linker command failed with exit code 1 (use -v to see
invocation)
make: *** [osu_alltoallv] Error 1

user at host osu_benchmarks$ find .. | grep libmpl
../src/mpl/libmpl.la
../src/mpl/.libs/libmpl.a
../src/mpl/.libs/libmpl.so
../src/mpl/.libs/libmpl.la
../src/mpl/.libs/libmpl.lai
../src/mpl/.libs/libmpl.so.1.0.0
../src/mpl/.libs/libmpl.so.1

I'm running CentOS 6.4, I have the OS-supplied OFED stack installed.
The compiler is Clang 3.2.

Please tell me if any other information would be helpful to
investigate and fix this issue.

Dmitri

--
main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
(j){printf("%d\n",i);}}} /*Dmitri Gribenko <gribozavr at gmail.com>*/