rework build system

Author: mathisloge

.gitignore

@@ -12,9 +12,9 @@
 *.dylib
 build/
 dist/
-mapnik/paths.py
 *.egg-info/
 .eggs/
 .mason/
 mason_packages/
 mapnik/plugins
+_skbuild/

CMakeLists.txt

@@ -0,0 +1,66 @@
+cmake_minimum_required(VERSION 3.15)
+include(cmake/vcpkg_setup.cmake)
+project(${SKBUILD_PROJECT_NAME} LANGUAGES CXX VERSION ${SKBUILD_PROJECT_VERSION})
+
+find_package(Python COMPONENTS Interpreter Development.Module)
+find_package(mapnik CONFIG REQUIRED)
+find_package(Boost REQUIRED COMPONENTS thread python${Python_VERSION_MAJOR}${Python_VERSION_MINOR})
+
+#set(Python_SOABI ${SKBUILD_SOABI})
+Python_add_library(_mapnik MODULE)
+target_link_libraries(_mapnik PRIVATE
+    mapnik::mapnik 
+    mapnik::json
+    mapnik::wkt
+    # even though boost_thread is no longer used in mapnik core
+    # we need to link in for boost_python to avoid missing symbol: _ZN5boost6detail12get_tss_dataEPKv / boost::detail::get_tss_data
+    Boost::thread
+    Boost::python${Python_VERSION_MAJOR}${Python_VERSION_MINOR}
+    ICU::data ICU::i18n ICU::uc
+)
+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
+)
+
+install(TARGETS _mapnik LIBRARY DESTINATION ${SKBUILD_PROJECT_NAME})

build.py

@@ -0,0 +1,4 @@
+if(WIN32)
+    set(VCPKG_TARGET_TRIPLET x64-windows-static)
+endif()
+set(CMAKE_TOOLCHAIN_FILE "~/vcpkg/scripts/buildsystems/vcpkg.cmake")

cmake/vcpkg_setup.cmake

@@ -0,0 +1,7 @@
+import os
+
+mapniklibpath = os.path.join(os.path.dirname(os.path.realpath(__file__)), "lib")
+inputpluginspath = os.path.join(mapniklibpath, 'mapnik', 'input')
+fontscollectionpath = os.path.join(mapniklibpath, 'mapnik', 'fonts')
+
+__all__ = [mapniklibpath,inputpluginspath,fontscollectionpath]

mapnik/paths.py

@@ -0,0 +1,27 @@
+[project]
+name = "mapnik"
+version = "4.0.0"
+authors = [
+  { name="Blake Thompson", email="[email protected]" },
+]
+description = "Python bindings for Mapnik"
+readme = "README.md"
+requires-python = ">=3.7"
+
+[project.urls]
+"Homepage" = "https://github.com/mapnik/python-mapnik"
+"Bug Tracker" = "https://github.com/mapnik/python-mapnik/issues"
+
+[project.optional-dependencies]
+test = ["pytest"]
+
+[build-system]
+requires = ["scikit-build-core"]
+build-backend = "scikit_build_core.build"
+
+[tool.scikit-build]
+cmake.minimum-version = "3.15"
+cmake.build-type = "Release"
+sdist.reproducible = true
+wheel.packages = ["mapnik"]
+#build-dir = "build"