For what it's worth, I have actually used get_command_argument in my own code and just now confirmed that it works just fine with Intel 16 in a small test program. It would be helpful to disambiguate that from all the shared library discussion. The other solution is to use ISO C11* as God intended and stop mucking around with all these flowery languages. Jeff * It is true that no compiler yet supports C11 threads, but that is because C compiler developers know better than to troll the PETSc team with programming atrocities like threads. On Tue, Sep 22, 2015 at 9:16 PM, Satish Balay <[email protected]> wrote:

On Tue, 22 Sep 2015, Blaise A Bourdin wrote:

...

With the later configuration, it looks like what matters is the order in which -lmpifort and -lifcore are listed: This one works: mpif90 -Wl,-multiply_defined,suppress -Wl,-multiply_defined -Wl,suppress -Wl,-commons,use_dylibs -Wl,-search_paths_first -g -O0 -I/opt/HPC/petsc-dev/include/petsc/finclude -o ex5f90 ex5f90.o -Wl,-rpath,/opt/HPC/petsc-dev/Darwin-intel16.0-g/lib -L/opt/HPC/petsc-dev/Darwin-intel16.0-g/lib -lpetsc -Wl,-rpath,/opt/intel-16.0/compilers_and_libraries_2016.0.083/mac/compiler/lib -L/opt/intel-16.0/compilers_and_libraries_2016.0.083/mac/compiler/lib -Wl,-rpath,/opt/intel-16.0/compilers_and_libraries_2016.0.083/mac/mkl/lib -lifcore -lmpifort

This one does not: mpif90 -Wl,-multiply_defined,suppress -Wl,-multiply_defined -Wl,suppress -Wl,-commons,use_dylibs -Wl,-search_paths_first -g -O0 -I/opt/HPC/petsc-dev/include/petsc/finclude -o ex5f90 ex5f90.o -Wl,-rpath,/opt/HPC/petsc-dev/Darwin-intel16.0-g/lib -L/opt/HPC/petsc-dev/Darwin-intel16.0-g/lib -lpetsc -Wl,-rpath,/opt/intel-16.0/compilers_and_libraries_2016.0.083/mac/compiler/lib -L/opt/intel-16.0/compilers_and_libraries_2016.0.083/mac/compiler/lib -Wl,-rpath,/opt/intel-16.0/compilers_and_libraries_2016.0.083/mac/mkl/lib -lmpifort -lifcore

Does linking with -lifcore vs

/opt/intel-16.0/compilers_and_libraries_2016.0.083/mac/compiler/lib/libifcore.a make a difference?

And what do you have for:

cd /opt/HPC/mpich-3.1.4-intel16.0/lib ls nm -Ao libmpiifort.* |grep get_command_argument

BTW: I'm assuming you have sept 20 or newer petsc master branch.

Satish

-- Jeff Hammond [email protected] http://jeffhammond.github.io/