Create standalone Wine accessibility helper

CMakeLists.txt

@@ -0,0 +1,38 @@
+cmake_minimum_required(VERSION 3.20)
+project(wine_access LANGUAGES C CXX)
+
+include(GNUInstallDirs)
+set(WINE_ACCESS_INSTALL_DIR "${CMAKE_INSTALL_LIBEXECDIR}/cthulhu/wine" CACHE PATH
+    "Installation directory for the Wine helper and its Winelib sidecar")
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+find_program(WIDL_EXECUTABLE widl REQUIRED)
+
+set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
+set(generated_header "${generated_dir}/nvdaController.h")
+set(generated_server "${generated_dir}/nvdaController_s.c")
+file(MAKE_DIRECTORY "${generated_dir}")
+
+add_custom_command(
+    OUTPUT "${generated_header}" "${generated_server}"
+    COMMAND "${WIDL_EXECUTABLE}" --win64 -h -H "${generated_header}"
+            -s -S "${generated_server}" "${CMAKE_CURRENT_SOURCE_DIR}/nvdaController.idl"
+    DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/nvdaController.idl"
+    VERBATIM)
+
+add_executable(cthulhu-wine-access main.cpp "${generated_server}")
+target_compile_features(cthulhu-wine-access PRIVATE cxx_std_20)
+target_include_directories(cthulhu-wine-access PRIVATE "${generated_dir}")
+target_link_libraries(cthulhu-wine-access PRIVATE
+    PkgConfig::GIO oleacc ole32 oleaut32 rpcrt4 user32)
+target_link_options(cthulhu-wine-access PRIVATE -mwindows)
+target_compile_options(cthulhu-wine-access PRIVATE
+    $<$<COMPILE_LANGUAGE:C,CXX>:-Wall -Wextra>)
+
+# Winegcc emits a launcher and a Winelib sidecar. CMake's normal target
+# installation looks for the Linux target name, so install both emitted
+# artifacts explicitly and keep them together for Wine to resolve.
+install(FILES
+    "${CMAKE_CURRENT_BINARY_DIR}/cthulhu-wine-access.exe"
+    "${CMAKE_CURRENT_BINARY_DIR}/cthulhu-wine-access.exe.so"
+    DESTINATION "${WINE_ACCESS_INSTALL_DIR}")