Re: Boost Python for Python 3.11

Am 18.12.23 um 15:17 schrieb Christopher HORLER:

I started to look at the package python-mapnik.

I believe that Boost >= 1.8.x is required for Python 3.11.

I tested including boost 1.8.4 in the repo build path - build gets past the following error (there are other issues not linked to Boost). I wanted to check what is the correct way to proceed for Python 3.11 and Boost Python linked packages.

Here is an example of the build failure for python-mapnik: (tested for both Boost 1.66 and 1.75)

/usr/include/boost/python/class.hpp:204:9: required from ‘boost::python::class_::class_(const char*, const boost::python::init_base<DerivedT>&) [with DerivedT = boost::python::init; W = mapnik::color; X1 = boost::python::detail::not_specified; X2 = boost::python::detail::not_specified; X3 = boost::python::detail::not_specified]’ src/mapnik_color.cpp:55:9: required from here /usr/include/boost/python/object/make_instance.hpp:50:31: error: lvalue required as left operand of assignment Py_SIZE(instance) = offsetof(instance_t, storage); ^

Leap or Tumbleweed? The codebase for mapnik and python-mapnik is years old. It might very well be that a boost compatible with python 3.11 is too new for mapnik. See also https://build.opensuse.org/package/show/Application:Geo/mapnik#comment-18091.... I suspect that is the reason why it is not in Factory. - Ben