Does this mean we've been incorrectly identifying shared libraries all this 
time?

"Smith, Barry F. via petsc-dev" <petsc-dev@mcs.anl.gov> writes:

>   Jed and Matt,
>
>    I have two problems with the MPI shared library check goes back to at 
> least 3.5
>
> 1) Executing: /Users/barrysmith/soft/gnu-gfortran/bin/mpiexec 
> /var/folders/y5/5_h50n196d3_hpl0jbpv51ph0000gn/T/petsc-5Abny2/config.libraries/conftest
> sh: /Users/barrysmith/soft/gnu-gfortran/bin/mpiexec 
> /var/folders/y5/5_h50n196d3_hpl0jbpv51ph0000gn/T/petsc-5Abny2/config.libraries/conftest
> Executing: /Users/barrysmith/soft/gnu-gfortran/bin/mpiexec 
> /var/folders/y5/5_h50n196d3_hpl0jbpv51ph0000gn/T/petsc-5Abny2/config.libraries/conftest
> sh: 
> ERROR while running executable: Could not execute 
> "/Users/barrysmith/soft/gnu-gfortran/bin/mpiexec 
> /var/folders/y5/5_h50n196d3_hpl0jbpv51ph0000gn/T/petsc-5Abny2/config.libraries/conftest":
> Could not find initialization function
>
>    This is due to the visibility flag being passed in building the test 
> libraries hence symbol not visible form outside
>
> 2) If you turn off the visibility flag with ./configure --with-visibility=0 
> then the problem becomes
>
> Could not find initialization check function
>
> I could not figure out why this fails. Not related to visibility
>
> Both gnu and clang compilers.

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