Try building wheels in Github Actions

.github/workflows/wheels.yml

@@ -0,0 +1,69 @@
+name: Build
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  build_wheels:
+    name: Build wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-13, macos-14, macos-latest]
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Set up QEMU
+        if: runner.os == 'Linux'
+        uses: docker/setup-qemu-action@v3
+        with:
+          platforms: all
+
+      - name: Build wheels
+        uses: pypa/cibuildwheel@v2.21.1
+        env:
+          CIBW_ARCHS_LINUX: auto
+          CIBW_ARCHS_WINDOWS: all
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
+          path: ./wheelhouse/*.whl
+
+  make_sdist:
+    name: Make SDist
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+
+    - name: Build SDist
+      run: pipx run build --sdist
+
+    - uses: actions/upload-artifact@v4
+      with:
+        name: cibw-sdist
+        path: dist/*.tar.gz
+
+  upload_all:
+    needs: [build_wheels, make_sdist]
+    environment: pypi
+    permissions:
+      id-token: write
+    runs-on: ubuntu-latest
+    if: github.event_name == 'release' && github.event.action == 'published'
+    steps:
+    - uses: actions/download-artifact@v4
+      with:
+        pattern: cibw-*
+        path: dist
+        merge-multiple: true
+
+    - uses: pypa/gh-action-pypi-publish@release/v1

.gitmodules

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+[submodule "tkdnd"]
+	path = tkdnd
+	url = https://github.com/petasis/tkdnd

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.5)
+
+# ===========================================================================
+# Project Information
+# ===========================================================================
+project(
+  tkdnd
+  LANGUAGES C
+  VERSION 0.14)
+
+# ===========================================================================
+# Locate Tcl/Tk
+# ===========================================================================
+if(MSVC)
+  find_package(TCL QUIET)
+  if(NOT TCL_FOUND)
+    include(FetchContent)
+    FetchContent_Declare(
+      cpython-tcltk-win32
+      GIT_REPOSITORY https://github.com/python/cpython-bin-deps
+      GIT_TAG tcltk)
+    FetchContent_MakeAvailable(cpython-tcltk-win32)
+
+    if(cpython-tcltk-win32_POPULATED)
+      if(MSVC_C_ARCHITECTURE_ID STREQUAL "ARM64")
+        set(CMAKE_PREFIX_PATH
+            ${CMAKE_PREFIX_PATH};${cpython-tcltk-win32_SOURCE_DIR}/arm64)
+      elseif(MSVC_C_ARCHITECTURE_ID STREQUAL "x64")
+        set(CMAKE_PREFIX_PATH
+            ${CMAKE_PREFIX_PATH};${cpython-tcltk-win32_SOURCE_DIR}/amd64)
+      elseif(MSVC_C_ARCHITECTURE_ID STREQUAL "X86")
+        set(CMAKE_PREFIX_PATH
+            ${CMAKE_PREFIX_PATH};${cpython-tcltk-win32_SOURCE_DIR}/win32)
+      else()
+        message(
+          WARNING
+            "No Tcl/Tk prebuilt binaries from CPython could be found for your platform (MSVC ${MSVC_C_ARCHITECTURE_ID})."
+            "If the build fails, Ensure a MSVC-built Tcl/Tk is available on CMAKE_PREFIX_PATH."
+        )
+      endif()
+    endif()
+  endif()
+endif()
+
+find_package(TCL REQUIRED)
+find_package(TclStub REQUIRED)
+
+# ===========================================================================
+# Target: tkdnd shared library
+# ===========================================================================
+#configure_file(tkdnd/generic/tkImgSVG.c
+#               ${CMAKE_CURRENT_BINARY_DIR}/tkImgSVG.c)
+#add_library(tkdnd SHARED ${CMAKE_CURRENT_BINARY_DIR}/tkdnd)
+
+file(GLOB tkdnd_SRC
+     "tkdnd/*.h"
+     "tkdnd/*.cpp"
+     "tkdnd/*.c"
+)
+
+add_library(tkdnd SHARED ${tkdnd_SRC})
+
+target_link_libraries(tkdnd PRIVATE ${TCL_STUB_LIBRARY})
+target_link_libraries(tkdnd PRIVATE ${TK_STUB_LIBRARY})
+
+target_compile_definitions(tkdnd PRIVATE -DUSE_TCL_STUBS)
+target_compile_definitions(tkdnd PRIVATE -DUSE_TK_STUBS)
+target_compile_definitions(tkdnd PRIVATE -DPACKAGE_NAME="${CMAKE_PROJECT_NAME}")
+target_compile_definitions(tkdnd
+                           PRIVATE -DPACKAGE_VERSION="${CMAKE_PROJECT_VERSION}")
+target_include_directories(tkdnd PRIVATE ${TCL_INCLUDE_PATH})
+target_include_directories(tkdnd PRIVATE ${TK_INCLUDE_PATH})
+
+block()
+set(PACKAGE_NAME ${CMAKE_PROJECT_NAME})
+set(PACKAGE_VERSION ${CMAKE_PROJECT_VERSION})
+set(PKG_LIB_FILE
+    ${CMAKE_SHARED_LIBRARY_PREFIX}tkdnd${CMAKE_SHARED_LIBRARY_SUFFIX})
+configure_file(tkdnd/pkgIndex.tcl.in pkgIndex.tcl @ONLY)
+endblock()
+
+if(WIN32)
+  install(TARGETS tkdnd RUNTIME DESTINATION tkdnd)
+else()
+  install(TARGETS tkdnd LIBRARY DESTINATION tkdnd)
+endif()
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/pkgIndex.tcl DESTINATION tkdnd)

pyproject.toml

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+[build-system]
+requires = ["scikit-build-core"]
+build-backend = "scikit_build_core.build"
+
+[project]
+name = "tkdnd"
+version = "0.14.0"
+description = "DnD support for Tkinter"
+author = "The tkdnd authors"
+url = "https://github.com/rdbende/tktkinterDnD"
+
+[tool.cibuildwheel]
+skip = ["cp36-*", "cp37-*", "cp38-*", "pp*"]
+
+[tool.cibuildwheel.linux]
+before-all = "yum install -y tcl-devel tk-devel"
+
+[[tool.cibuildwheel.overrides]]
+select = "*-musllinux*"
+before-all = "apk add tcl-dev tk-dev"
+
+[tool.cibuildwheel.macos]
+# https://github.com/actions/runner-images/issues/9441#issuecomment-1976928303
+before-all = "brew install tcl-tk"