target_compile_definitions -------------------------- Add compile definitions to a target. :: target_compile_definitions( [items1...] [ [items2...] ...]) Specify compile definitions to use when compiling a given ````. The named ```` must have been created by a command such as :command:`add_executable` or :command:`add_library` and must not be an :ref:`ALIAS target `. The ``INTERFACE``, ``PUBLIC`` and ``PRIVATE`` keywords are required to specify the scope of the following arguments. ``PRIVATE`` and ``PUBLIC`` items will populate the :prop_tgt:`COMPILE_DEFINITIONS` property of ````. ``PUBLIC`` and ``INTERFACE`` items will populate the :prop_tgt:`INTERFACE_COMPILE_DEFINITIONS` property of ````. (:ref:`IMPORTED targets ` only support ``INTERFACE`` items.) The following arguments specify compile definitions. Repeated calls for the same ```` append items in the order called. Arguments to ``target_compile_definitions`` may use "generator expressions" with the syntax ``$<...>``. See the :manual:`cmake-generator-expressions(7)` manual for available expressions. See the :manual:`cmake-buildsystem(7)` manual for more on defining buildsystem properties. Any leading ``-D`` on an item will be removed. Empty items are ignored. For example, the following are all equivalent: .. code-block:: cmake target_compile_definitions(foo PUBLIC FOO) target_compile_definitions(foo PUBLIC -DFOO) # -D removed target_compile_definitions(foo PUBLIC "" FOO) # "" ignored target_compile_definitions(foo PUBLIC -D FOO) # -D becomes "", then ignored