Mapnik 3 for Windows：why doesn‘t it work？

编译好了Mapnik 3 C++之后，还需要Python Mapnik才能在Python中调用。。。

but....

https://github.com/mapnik/mapnik/issues/4062

Windows binaries are no longer suppported, as per mapnik/node-mapnik/issues/848 . I did make mapnik work after that by creating a VS solution by hand, it was however a pain (to put it mildly). This was of course more a one-time thing rather than a sustainable approach.

Edit: I have just noticed #4056 where there is a link to a CMake build which can be used with Visual Studio, but have not tried it yet.

Windows二进制文件不再提供，因为mapnik/node-mapnik/issues/848。我的确让mapnik工作了，经过创建一个VS工程。但是的确是一种痛苦的经历。这更像是一次，而非长久之计。

后续：我刚刚注意到#4056。这是一个CMake的编译链接，它可以在VS中使用，但是还没有尝试过。

yes, this fork

https://github.com/pedro-vicente/mapnik

has a CMake build for the 3.0 and 2.3 branches with the minimum dependencies

the 2.3 branch builds without errors and runs a test program with the OSM plugin
the 3.0 branch has some compiling errors, with Visual Studio 2019

I'll post those errors here later

                                                    ——————————pedro-vicente

here are the 3.0 errors

L:\mapnik\include\mapnik/feature.hpp(108,14): error C2664: 'mapnik::geometry::geometry::geometry(const mapnik::geometry::geometry &)': cannot convert argument 1 from 'mapnik::geometry::geometry_empty' to 'mapbox::util::no_init'

code

feature_impl(context_ptr const& ctx, mapnik::value_integer _id)
        : id_(_id),
        ctx_(ctx),
        data_(ctx_->mapping_.size()),
        geom_(geometry::geometry_empty()),
        raster_() {}

                                                    ——————————pedro-vicente

L:\mapnik\include\mapnik/geometry/reprojection_impl.hpp(17