add_compile_definitions
-----------------------

.. versionadded:: 3.12

Add preprocessor definitions to the compilation of source files.

.. code-block:: cmake

  add_compile_definitions(<definition> ...)

Adds preprocessor definitions to the compiler command line.

The preprocessor definitions are added to the :prop_dir:`COMPILE_DEFINITIONS`
directory property for the current ``CMakeLists`` file. They are also added to
the :prop_tgt:`COMPILE_DEFINITIONS` target property for each target in the
current ``CMakeLists`` file.

Definitions are specified using the syntax ``VAR`` or ``VAR=value``.
Function-style definitions are not supported. CMake will automatically
escape the value correctly for the native build system (note that CMake
language syntax may require escapes to specify some values).

.. |command_name| replace:: ``add_compile_definitions``
.. include:: GENEX_NOTE.txt

See Also
^^^^^^^^

* The command :command:`target_compile_definitions` adds target-specific definitions.