K 10 svn:author V 6 jbeich K 8 svn:date V 27 2018-08-08T12:32:03.388613Z K 7 svn:log V 316 math/cadabra2: unbreak with libc++ 7 In file included from core/PythonCdb.cc:25: In file included from libs/pybind11/include/pybind11/stl.h:34: /usr/include/c++/v1/experimental/optional:11:2: error: " has been removed. Use instead." PR: 230355 Obtained from: upstream (pybind11) END