-srcs = ['memcpy_interleaved.cpp', 'metacube2.cpp', 'ffmpeg_raii.cpp', 'mux.cpp', 'metrics.cpp', 'context.cpp', 'httpd.cpp']
-shared = static_library('shared', srcs, include_directories: top_include, dependencies: [qt5deps, libmicrohttpddep])
+# Preprocess Qt as needed.
+qt_files = qt5.preprocess(
+ moc_headers: ['aboutdialog.h'],
+ ui_files: ['aboutdialog.ui'],
+ dependencies: shared_qt5deps)
+
+srcs = ['memcpy_interleaved.cpp', 'metacube2.cpp', 'ffmpeg_raii.cpp', 'mux.cpp', 'metrics.cpp', 'context.cpp', 'httpd.cpp', 'disk_space_estimator.cpp', 'read_file.cpp']
+
+# Qt objects.
+srcs += qt_files
+srcs += ['aboutdialog.cpp']
+
+shared = static_library('shared', srcs, include_directories: top_include, dependencies: [shared_qt5deps, libmicrohttpddep])