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Diffstat (limited to 'Help/prop_tgt/AUTOMOC_COMPILER_PREDEFINES.rst')
| -rw-r--r-- | Help/prop_tgt/AUTOMOC_COMPILER_PREDEFINES.rst | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/Help/prop_tgt/AUTOMOC_COMPILER_PREDEFINES.rst b/Help/prop_tgt/AUTOMOC_COMPILER_PREDEFINES.rst new file mode 100644 index 0000000..57a647f --- /dev/null +++ b/Help/prop_tgt/AUTOMOC_COMPILER_PREDEFINES.rst @@ -0,0 +1,24 @@ +AUTOMOC_COMPILER_PREDEFINES +--------------------------- + +Boolean value used by :prop_tgt:`AUTOMOC` to determine if the +compiler pre definitions file ``moc_predefs.h`` should be generated. + +CMake generates a ``moc_predefs.h`` file with compiler pre definitions +from the output of the command defined in +:variable:`CMAKE_CXX_COMPILER_PREDEFINES_COMMAND <CMAKE_<LANG>_COMPILER_PREDEFINES_COMMAND>` +when + +- :prop_tgt:`AUTOMOC` is enabled, +- :prop_tgt:`AUTOMOC_COMPILER_PREDEFINES` is enabled, +- :variable:`CMAKE_CXX_COMPILER_PREDEFINES_COMMAND <CMAKE_<LANG>_COMPILER_PREDEFINES_COMMAND>` isn't empty and +- the Qt version is greater or equal 5.8. + +The ``moc_predefs.h`` file, which is generated in :prop_tgt:`AUTOGEN_BUILD_DIR`, +is passed to ``moc`` as the argument to the ``--include`` option. + +By default :prop_tgt:`AUTOMOC_COMPILER_PREDEFINES` is initialized from +:variable:`CMAKE_AUTOMOC_COMPILER_PREDEFINES`, which is ON by default. + +See the :manual:`cmake-qt(7)` manual for more information on using CMake +with Qt. |