| target_compile_definitions |
| -------------------------- |
| |
| Add compile definitions to a target. |
| |
| .. code-block:: cmake |
| |
| target_compile_definitions(<target> |
| <INTERFACE|PUBLIC|PRIVATE> [items1...] |
| [<INTERFACE|PUBLIC|PRIVATE> [items2...] ...]) |
| |
| Specifies compile definitions to use when compiling a given ``<target>``. The |
| named ``<target>`` must have been created by a command such as |
| :command:`add_executable` or :command:`add_library` and must not be an |
| :ref:`ALIAS target <Alias Targets>`. |
| |
| 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 |
| ``<target>``. ``PUBLIC`` and ``INTERFACE`` items will populate the |
| :prop_tgt:`INTERFACE_COMPILE_DEFINITIONS` property of ``<target>``. |
| The following arguments specify compile definitions. Repeated calls for the |
| same ``<target>`` append items in the order called. |
| |
| .. versionadded:: 3.11 |
| Allow setting ``INTERFACE`` items on :ref:`IMPORTED targets <Imported Targets>`. |
| |
| 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 |
| |
| Definitions may optionally have values: |
| |
| .. code-block:: cmake |
| |
| target_compile_definitions(foo PUBLIC FOO=1) |
| |
| Note that many compilers treat ``-DFOO`` as equivalent to ``-DFOO=1``, but |
| other tools may not recognize this in all circumstances (e.g. IntelliSense). |