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# target_compile_definitions

Add compile definitions to a target.

    target_compile_definitions(<target>
      <INTERFACE|PUBLIC|PRIVATE> [items1...]
      [<INTERFACE|PUBLIC|PRIVATE> [items2...] ...])

Specify compile definitions to use when compiling a given `<target>`. The named `<target>` must have been created by a command such as `add_executable()` or `add_library()` and must not be an Imported Target.

The `INTERFACE`, `PUBLIC` and `PRIVATE` keywords are required to specify the scope of the following arguments. `PRIVATE` and `PUBLIC` items will populate the `COMPILE_DEFINITIONS` property of `<target>`. `PUBLIC` and `INTERFACE` items will populate the `INTERFACE_COMPILE_DEFINITIONS` property of `<target>`. The following arguments specify compile definitions. Repeated calls for the same `<target>` append items in the order called.

Arguments to `target_compile_definitions` may use “generator expressions” with the syntax `$<...>`. See the `cmake-generator-expressions(7)` manual for available expressions. See the `cmake-buildsystem(7)` manual for more on defining buildsystem properties.

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