if not is_windows win32_dep = dependency('', required: false) subdir_done() endif win32 = static_library( 'win32', 'ComWorker.cxx', 'HResult.cxx', 'PropVariant.cxx', 'WinEvent.cxx', include_directories: inc, ) win32_dep = declare_dependency( link_with: win32, dependencies: [ thread_dep, ], )