while — CMake 4.3.0 Documentation

# while

Evaluate a group of commands while a condition is true

    while(<condition>)
      <commands>
    endwhile()

All commands between while and the matching `endwhile()` are recorded without being invoked. Once the `endwhile()` is evaluated, the recorded list of commands is invoked as long as the `<condition>` is true.

The `<condition>` has the same syntax and is evaluated using the same logic as described at length for the `if()` command.

The commands `break()` and `continue()` provide means to escape from the normal control flow.

Per legacy, the `endwhile()` command admits an optional `<condition>` argument. If used, it must be a verbatim repeat of the argument of the opening `while` command.

## See Also

- `break()`

- `continue()`

- `foreach()`

- `endwhile()`