INCLUDE_DIRECTORIES

List of preprocessor include file search directories.

This property specifies the list of directories given so far to the include_directories() 命令。

This property is used to populate the INCLUDE_DIRECTORIES target property, which is used by the generators to set the include directories for the compiler.

In addition to accepting values from that command, values may be set directly on any directory using the set_property() command, and can be set on the current directory using the set_directory_properties() command. A directory gets its initial value from its parent directory if it has one. The initial value of the INCLUDE_DIRECTORIES target property comes from the value of this property. Both directory and target property values are adjusted by calls to the include_directories() command. Calls to set_property() or set_directory_properties() , however, will update the directory property value without updating target property values. Therefore direct property updates must be made before calls to add_executable() or add_library() for targets they are meant to affect.

The target property values are used by the generators to set the include paths for the compiler.

Contents of INCLUDE_DIRECTORIES may use “generator expressions” with the syntax $<...> 。见 cmake-generator-expressions(7) manual for available expressions. See the cmake-buildsystem(7) manual for more on defining buildsystem properties.

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