[Octave-bug-tracker] [bug #59820] build fails on macOS with visibility settings

[Markus Mützel]

Update of bug #59820 (project octave):

                  Status:               Need Info => In Progress            

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Follow-up Comment #64:

I pushed a patch here that moves the forward declaration of many matrix
classes to their own forward declaration header:
https://hg.savannah.gnu.org/hgweb/octave/rev/6f07492c9c20

That brings the related warnings on the macOS runner down to two:

ld: warning: direct access in function
'octave::math::sparse_lu<SparseComplexMatrix>::~sparse_lu()' from file
'liboctave/array/.libs/libarray.a(libarray_la-CSparse.o)' to global weak
symbol 'vtable for octave::math::sparse_lu<SparseComplexMatrix>' from file
'liboctave/numeric/.libs/libnumeric.a(libnumeric_la-sparse-lu.o)' means the
weak symbol cannot be overridden at runtime. This was likely caused by
different translation units being compiled with different visibility
settings.
ld: warning: direct access in function
'octave::math::sparse_lu<SparseMatrix>::~sparse_lu()' from file
'liboctave/array/.libs/libarray.a(libarray_la-dSparse.o)' to global weak
symbol 'vtable for octave::math::sparse_lu<SparseMatrix>' from file
'liboctave/numeric/.libs/libnumeric.a(libnumeric_la-sparse-lu.o)' means the
weak symbol cannot be overridden at runtime. This was likely caused by
different translation units being compiled with different visibility
settings.


Still no change to the index vector related test failures though.

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