Just to leave a trace in case someone would hit the same issue: I just
upgraded from Ubuntu 16.4 to 17.4, and my sage (built from source)
would not start afterward:
from sage.matrix.matrix_space import MatrixSpace
File
"/opt/sage-git2/local/lib/python2.7/site-packages/sage/matrix/matrix_space.py",
line 48, in <module>
from . import matrix_modn_sparse
File "sage/matrix/matrix_integer_dense.pxd", line 10, in init
sage.matrix.matrix_modn_sparse
cdef class Matrix_integer_dense(Matrix_dense):
File "sage/matrix/matrix_mod2_dense.pxd", line 4, in init
sage.matrix.matrix_integer_dense
cdef class Matrix_mod2_dense(Matrix_dense):
ImportError: libvpx.so.3: cannot open shared object file: No such file or
directory
Rebuilding Sage's libgd package fixed that:
sage -i -f libgd
Cheers,
Nicolas
--
Nicolas M. Thiéry "Isil" <nthi...@users.sf.net>
http://Nicolas.Thiery.name/
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