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# target_compile_features

Add expected compiler features to a target.

    target_compile_features(<target> <PRIVATE|PUBLIC|INTERFACE> <feature> [...])

Specify compiler features required when compiling a given target. If the feature is not listed in the `CMAKE_C_COMPILE_FEATURES` variable or `CMAKE_CXX_COMPILE_FEATURES` variable, then an error will be reported by CMake. If the use of the feature requires an additional compiler flag, such as `-std=gnu++11`, the flag will be added automatically.

The `INTERFACE`, `PUBLIC` and `PRIVATE` keywords are required to specify the scope of the features. `PRIVATE` and `PUBLIC` items will populate the `COMPILE_FEATURES` property of `<target>`. `PUBLIC` and `INTERFACE` items will populate the `INTERFACE_COMPILE_FEATURES` property of `<target>`. Repeated calls for the same `<target>` append items.

The named `<target>` must have been created by a command such as `add_executable()` or `add_library()` and must not be an `IMPORTED` target.

Arguments to `target_compile_features` may use “generator expressions” with the syntax `$<...>`. See the `cmake-generator-expressions(7)` manual for available expressions. See the `cmake-compile-features(7)` manual for information on compile features and a list of supported compilers.

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