AUTOMOC ------- Should the target be processed with automoc (for Qt projects). :prop_tgt:`AUTOMOC` is a boolean specifying whether CMake will handle the Qt ``moc`` preprocessor automatically, i.e. without having to use the :module:`QT4_WRAP_CPP() ` or QT5_WRAP_CPP() macro. Currently Qt4 and Qt5 are supported. When this property is set ``ON``, CMake will scan the header and source files at build time and invoke moc accordingly. * If an ``#include`` statement like ``#include "moc_.cpp"`` is found, a macro from :prop_tgt:`AUTOMOC_MACRO_NAMES` is expected to appear in the ``.h(xx)`` header file. ``moc`` is run on the header file to generate ``moc_.cpp`` in the ``/include`` directory which is automatically added to the target's :prop_tgt:`INCLUDE_DIRECTORIES`. This allows the compiler to find the included ``moc_.cpp`` file regardless of the location the original source. * For :prop_gbl:`multi configuration generators `, the include directory is ``/include_``. * See :prop_tgt:`AUTOGEN_BUILD_DIR`. * If an ``#include`` statement like ``#include ".moc"`` is found, a macro from :prop_tgt:`AUTOMOC_MACRO_NAMES` is expected to appear in the source file and ``moc`` is run on the source file itself. * Header files that are not included by an ``#include "moc_.cpp"`` statement are nonetheless scanned for a macro out of :prop_tgt:`AUTOMOC_MACRO_NAMES`. The resulting ``moc_.cpp`` files are generated in custom directories and automatically included in a generated ``/mocs_compilation.cpp`` file, which is compiled as part of the target. * The custom directories with checksum based names help to avoid name collisions for ``moc`` files with the same ````. * See :prop_tgt:`AUTOGEN_BUILD_DIR`. * Additionally, header files with the same base name as a source file, (like ``.h``) or ``_p`` appended to the base name (like ``_p.h``), are scanned for a macro out of :prop_tgt:`AUTOMOC_MACRO_NAMES`, and if found, ``moc`` is also executed on those files. * ``AUTOMOC`` always checks multiple header alternative extensions, such as ``hpp``, ``hxx``, etc. when searching for headers. * ``AUTOMOC`` looks for the ``Q_PLUGIN_METADATA`` macro and reruns the ``moc`` when the file addressed by the ``FILE`` argument of the macro changes. This property is initialized by the value of the :variable:`CMAKE_AUTOMOC` variable if it is set when a target is created. The ``moc`` executable will be detected automatically, but can be forced to a certain binary using the :prop_tgt:`AUTOMOC_EXECUTABLE` property. Additional command line options for ``moc`` can be set via the :prop_tgt:`AUTOMOC_MOC_OPTIONS` property. By enabling the :variable:`CMAKE_AUTOMOC_RELAXED_MODE` variable the rules for searching the files which will be processed by ``moc`` can be relaxed. See the documentation for this variable for more details. The global property :prop_gbl:`AUTOGEN_TARGETS_FOLDER` can be used to group the automoc targets together in an IDE, e.g. in MSVS. The global property :prop_gbl:`AUTOGEN_SOURCE_GROUP` can be used to group files generated by :prop_tgt:`AUTOMOC` together in an IDE, e.g. in MSVS. Additional macro names to search for can be added to :prop_tgt:`AUTOMOC_MACRO_NAMES`. Additional ``moc`` dependency file names can be extracted from source code by using :prop_tgt:`AUTOMOC_DEPEND_FILTERS`. Compiler pre definitions for ``moc`` are written to a ``moc_predefs.h`` file which is controlled by :prop_tgt:`AUTOMOC_COMPILER_PREDEFINES`. Source C++ files can be excluded from :prop_tgt:`AUTOMOC` processing by enabling :prop_sf:`SKIP_AUTOMOC` or the broader :prop_sf:`SKIP_AUTOGEN`. The number of parallel ``moc`` processes to start can be modified by setting :prop_tgt:`AUTOGEN_PARALLEL`. A global ``autogen`` target that depends on all :prop_tgt:`AUTOMOC` generated ``_autogen`` targets in the project can be generated by enabling :variable:`CMAKE_GLOBAL_AUTOGEN_TARGET`. See the :manual:`cmake-qt(7)` manual for more information on using CMake with Qt.