rework build system

Author: mathisloge

.gitignore

@@ -18,3 +18,4 @@ mapnik/paths.py
 .mason/
 mason_packages/
 mapnik/plugins
+_skbuild/

CMakeLists.txt

@@ -0,0 +1,65 @@
+cmake_minimum_required(VERSION 3.15)
+set(CMAKE_TOOLCHAIN_FILE "D:/dev/vcpkg/scripts/buildsystems/vcpkg.cmake")
+project(python-mapnik)
+
+find_package(PythonExtensions REQUIRED)
+find_package(mapnik CONFIG REQUIRED)
+find_package(Boost REQUIRED COMPONENTS thread python310)
+
+add_library(_mapnik MODULE)
+target_link_libraries(_mapnik 
+    mapnik::mapnik 
+    mapnik::json
+    mapnik::wkt
+    # even though boost_thread is no longer used in mapnik core
+    # we need to link in for boost_python to avoid missing symbol: _ZN5boost6detail12get_tss_dataEPKv / boost::detail::get_tss_data
+    Boost::thread
+    Boost::python310
+)
+target_sources(_mapnik PRIVATE
+    src/boost_std_shared_shim.hpp
+    src/mapnik_color.cpp
+    src/mapnik_coord.cpp
+    src/mapnik_datasource_cache.cpp
+    src/mapnik_datasource.cpp
+    src/mapnik_enumeration_wrapper_converter.hpp
+    src/mapnik_enumeration.hpp
+    src/mapnik_envelope.cpp
+    src/mapnik_expression.cpp
+    src/mapnik_feature.cpp
+    src/mapnik_featureset.cpp
+    src/mapnik_font_engine.cpp
+    src/mapnik_fontset.cpp
+    src/mapnik_gamma_method.cpp
+    src/mapnik_geometry.cpp
+    src/mapnik_grid_view.cpp
+    src/mapnik_grid.cpp
+    src/mapnik_image_view.cpp
+    src/mapnik_image.cpp
+    src/mapnik_label_collision_detector.cpp
+    src/mapnik_layer.cpp
+    src/mapnik_logger.cpp
+    src/mapnik_map.cpp
+    src/mapnik_palette.cpp
+    src/mapnik_parameters.cpp
+    src/mapnik_proj_transform.cpp
+    src/mapnik_projection.cpp
+    src/mapnik_python.cpp
+    src/mapnik_query.cpp
+    src/mapnik_raster_colorizer.cpp
+    src/mapnik_rule.cpp
+    src/mapnik_scaling_method.cpp
+    src/mapnik_style.cpp
+    src/mapnik_svg.hpp
+    src/mapnik_symbolizer.cpp
+    src/mapnik_threads.hpp
+    src/mapnik_value_converter.hpp
+    src/mapnik_view_transform.cpp
+    src/python_grid_utils.cpp
+    src/python_grid_utils.hpp
+    src/python_optional.hpp
+    src/python_to_value.hpp
+)
+python_extension_module(_mapnik)
+
+install(TARGETS _mapnik LIBRARY DESTINATION mapnik)

build.py

@@ -0,0 +1,8 @@
+[build-system]
+requires = [
+    "setuptools>=42",
+    "scikit-build>=0.13",
+    "cmake>=3.18",
+    "ninja",
+]
+build-backend = "setuptools.build_meta"