${qt_path}/bin/qt-configure-module ${qt_src}/qtwebengine

${qt_src}/configure -opensource -confirm-license \
    -cmake-generator Ninja \
    -linker lld \
    -prefix ${qt_path} \
    -release -force-debug-info -separate-debug-info \
    -nomake tests -nomake examples \
    -no-libudev \
    -qt-doubleconversion \
    -no-sql-mysql -plugin-sql-sqlite -qt-libjpeg -qt-libpng -xcb -bundled-xcb-xinput -sysconfdir /etc/xdg -qt-pcre -qt-harfbuzz -R . \
    -skip qtdoc \
    -skip qtqa

In file included from gen/v8/v8_base_without_compiler_jumbo_48.cc:23:
./../../../../../qt/qtwebengine/src/3rdparty/chromium/v8/src/runtime/runtime-strings.cc:27:20: error: redefinition of ‘class v8::internal::{anonymous}::SaveAndClearThreadInWasmFlag’
   27 | class V8_NODISCARD SaveAndClearThreadInWasmFlag {
      |           

${qt_path}/bin/qt-configure-module ${qt_src}/qtwebengine -no-webengine-webrtc -- -DFEATURE_webengine_jumbo_build=OFF

../../../../../qt/qtwebengine/src/3rdparty/chromium/content/renderer/pepper/pepper_media_device_manager.cc: In member function ‘virtual void content::PepperMediaDeviceManager::EnumerateDevices(PP_DeviceType_Dev, content::PepperDeviceEnumerationHostHelper::Delegate::DevicesOnceCallback)’:
../../../../../qt/qtwebengine/src/3rdparty/chromium/content/renderer/pepper/pepper_media_device_manager.cc:119:9: error: ‘base::ThreadTaskRunnerHandle’ has not been declared
  119 |   base::ThreadTaskRunnerHandle::Get()->PostTask(
      |         ^~~~~~~~~~~~~~~~~~~~~~
../../../../../qt/qtwebengine/src/3rdparty/chromium/content/renderer/pepper/pepper_media_device_manager.cc: In member function ‘int content::PepperMediaDeviceManager::OpenDevice(PP_DeviceType_Dev, const string&, PP_Instance, content::PepperMediaDeviceManager::OpenDeviceCallback)’:
../../../../../qt/qtwebengine/src/3rdparty/chromium/content/renderer/pepper/pepper_media_device_manager.cc:198:9: error: ‘base::ThreadTaskRunnerHandle’ has not been declared
  198 |   base::ThreadTaskRunnerHandle::Get()->PostTask(
      |         ^~~~~~~~~~~~~~~~~~~~~~