I am trying to figure out what is wrong with my code and am stuck, so I thought someone might help. The code used to work in 1.55 and in 1.56 no longer compiles; I am at a loss what might be wrong. I am using the GIS extension from the develop-1.56 branch.

Here is the relevant snippet:

    typedef bg::model::ll::point<> point;
    typedef bg::model::polygon<point> polygon;

    polygon poly;
    bg::read_wkt(str, poly);

    const bg::latitude<double> lat_out(37.69311);
    const bg::longitude<double> lon_out(-122.13865);
    point p_out(lat_out, lon_out);

    bg::distance(p_out, poly); // It fails to compile right here.

Does anyone have any suggestions?

Thank you,