On 20.05.2015, Olivier Fourdan wrote: > Well, it means you failed at rebuilding xfwm4 with MONITOR_ROOT_PIXMAP > enabled or you are not using the version with MONITOR_ROOT_PIXMAP > enabled. > Either way, you missed something. Following the examples from this thread, I guess he forgot to export the CFLAGS prior to compiling.. export CFLAGS=...