message: Check that shiboken/pyside targets exist
  * Some ways of installing pyside provide a cmake script that's broken and
  doesn't produce actual libraries/headers to link against.
diff: @@ -216,7 +216,7 @@ option(QRENDERDOC_ENABLE_PYSIDE2 "Enable PySide2 if found" ON)
  if(NOT QRENDERDOC_ENABLE_PYSIDE2)
  message(STATUS "PySide2 integration disabled")
  -elseif(PySide2_FOUND AND Shiboken2_FOUND)
  +elseif(PySide2_FOUND AND Shiboken2_FOUND AND TARGET Shiboken2::libshiboken AND TARGET PySide2::pyside2)
  message(STATUS "Building with PySide2 ${PySide2_VERSION} from ${PySide2_DIR}")
  if(NOT PYTHONLIBS_VERSION_STRING MATCHES "${SHIBOKEN_PYTHON_VERSION_MAJOR}.${SHIBOKEN_PYTHON_VERSION_MINOR}")
  