CMake/Help/prop_tgt/INTERFACE_COMPILE_DEFINITIONS.rst

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INTERFACE_COMPILE_DEFINITIONS
-----------------------------
List of public compile definitions for a library.
Targets may populate this property to publish the compile definitions
required to compile against the headers for the target. Consuming
targets can add entries to their own :prop_tgt:`COMPILE_DEFINITIONS`
property such as ``$<TARGET_PROPERTY:foo,INTERFACE_COMPILE_DEFINITIONS>``
to use the compile definitions specified in the interface of ``foo``.
Contents of ``INTERFACE_COMPILE_DEFINITIONS`` may use "generator expressions"
with the syntax ``$<...>``. See the :manual:`cmake-generator-expressions(7)`
manual for available expressions. See the :manual:`cmake-buildsystem(7)`
manual for more on defining buildsystem properties.