AUTOGEN_PARALLEL ---------------- Number of parallel ``moc`` or ``uic`` processes to start when using :prop_tgt:`AUTOMOC` and :prop_tgt:`AUTOUIC`. The custom `_autogen` target starts a number of threads of which each one parses a source file and on demand starts a ``moc`` or ``uic`` process. :prop_tgt:`AUTOGEN_PARALLEL` controls how many parallel threads (and therefore ``moc`` or ``uic`` processes) are started. - An empty (or unset) value or the string ``AUTO`` sets the number of threads/processes to the number of physical CPUs on the host system. - A positive non zero integer value sets the exact thread/process count. - Otherwise a single thread/process is started. By default :prop_tgt:`AUTOGEN_PARALLEL` is initialized from :variable:`CMAKE_AUTOGEN_PARALLEL`. See the :manual:`cmake-qt(7)` manual for more information on using CMake with Qt.