Use SQL and parse the output or you can try to read it with this unreleased extension 

Use the  shapelib or you can try one of these unreleased extension related to shapefile format 

https://github.com/boostorg/geometry/tree/develop/include/boost/geometry/extensions/gis/io/

Remember, Boost.Geometry is not  another GDAL/OGR library. 

You may need to implement readers parsers on your own or use third parties. 

Best regards, 
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