add_compile_definitions

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).

.. versionadded:: 3.26 Any leading -D on an item will be removed.

.. |command_name| replace:: add_compile_definitions .. include:: include/GENEX_NOTE.rst

See Also ^^^^^^^^

• The command :command:target_compile_definitions adds target-specific definitions.