Basic Windows NSIS installer

.github/workflows/build.yml

@@ -84,6 +84,8 @@ jobs:
         cmake --build build --config Release
         $version = Get-Content build/version.txt -Raw
         Add-Content -Path $env:GITHUB_ENV -Value "VERSION=$version"
+        cpack --config build/CPackConfig.cmake -B build/installer --verbose
+        Move-Item -Path "build/installer/*.exe" -Destination "build/Release"
     - name: Upload
       uses: actions/upload-artifact@v4
       with:
@@ -103,6 +105,8 @@ jobs:
         cmake --build build
         $version = Get-Content build/version.txt -Raw
         Add-Content -Path $env:GITHUB_ENV -Value "VERSION=$version"
+        cpack --config build/CPackConfig.cmake -B build/installer --verbose
+        Move-Item -Path "build/installer/*.exe" -Destination "build/Release"
     - name: Upload
       uses: actions/upload-artifact@v4
       with:

cmake/installer.cmake

@@ -15,3 +15,15 @@ foreach(TARGET IN LISTS INSTALL_TARGETS)
         BUNDLE DESTINATION ${DESTINATION}
         ARCHIVE EXCLUDE_FROM_ALL)
 endforeach()
+
+if(NOT CPACK_GENERATOR)
+    return()
+endif()
+
+set(CPACK_PACKAGE_NAME ${PROJECT_NAME})
+set(CPACK_PACKAGE_INSTALL_DIRECTORY ${PROJECT_NAME})
+set(CPACK_PACKAGE_EXECUTABLES ${CLIENT_NAME} ${PROJECT_NAME})
+set(CPACK_PACKAGE_FILE_NAME ${PROJECT_NAME}-${PRODUCT_VERSION})
+set(CPACK_RESOURCE_FILE_LICENSE ${CMAKE_SOURCE_DIR}/COPYING.txt)
+
+include(CPack)

cmake/platforms/windows.cmake

@@ -42,3 +42,7 @@ set(CLIENT_EXECUTABLE_OPTIONS WIN32)
 # CMAKE_EXECUTABLE_SUFFIX will be empty anyway, or we want
 # HOST_EXECUTABLE_SUFFIX to be empty for other reasons
 set(HOST_EXECUTABLE_SUFFIX ${CMAKE_EXECUTABLE_SUFFIX})
+
+set(CPACK_GENERATOR NSIS)
+set(CPACK_NSIS_MUI_ICON ${WINDOWS_ICON_PATH})
+set(CPACK_NSIS_EXECUTABLES_DIRECTORY .)