EXCLUDE_FROM_ALL

Set this directory property to a true value on a subdirectory to exclude its targets from the "all" target of its ancestors. If excluded, running e.g. make in the parent directory will not build targets the subdirectory by default. This does not affect the "all" target of the subdirectory itself. Running e.g. make inside the subdirectory will still build its targets.

If the EXCLUDE_FROM_ALL target property is set on a target then its value determines whether the target is included in the "all" target of this directory and its ancestors.