INCLUDE_DIRECTORIES ------------------- List of preprocessor include file search directories. This property specifies the list of directories given so far to the include_directories command. This property exists on directories and targets. In addition to accepting values from the include_directories command, values may be set directly on any directory or any target using the set_property command. A target gets its initial value for this property from the value of the directory property. A directory gets its initial value from its parent directory if it has one. Both directory and target property values are adjusted by calls to the include_directories command. The target property values are used by the generators to set the include paths for the compiler. See also the include_directories command. Contents of INCLUDE_DIRECTORIES may use "generator expressions" with the syntax "$<...>". See the :manual:`cmake-generator-expressions(7)` manual for available expressions.