CMake/Help/prop_dir/COMPILE_DEFINITIONS_CONFIG.rst

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COMPILE_DEFINITIONS_<CONFIG>
----------------------------
Per-configuration preprocessor definitions in a directory.
This is the configuration-specific version of :prop_dir:`COMPILE_DEFINITIONS`
where ``<CONFIG>`` is an upper-case name (ex. ``COMPILE_DEFINITIONS_DEBUG``).
This property will be initialized in each directory by its value in
the directory's parent.
Contents of ``COMPILE_DEFINITIONS_<CONFIG>`` 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.
Generator expressions should be preferred instead of setting this property.