/usr/include/KF5/ThreadWeaver/ is in libkf5threadweaver-dev 5.18.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/ThreadWeaver/ThreadWeaver/
/usr/include/KF5/ThreadWeaver/ThreadWeaver/Collection
/usr/include/KF5/ThreadWeaver/ThreadWeaver/DebuggingAids
/usr/include/KF5/ThreadWeaver/ThreadWeaver/Dependency
/usr/include/KF5/ThreadWeaver/ThreadWeaver/DependencyPolicy
/usr/include/KF5/ThreadWeaver/ThreadWeaver/DestructedState
/usr/include/KF5/ThreadWeaver/ThreadWeaver/Exception
/usr/include/KF5/ThreadWeaver/ThreadWeaver/IdDecorator
/usr/include/KF5/ThreadWeaver/ThreadWeaver/InConstructionState
/usr/include/KF5/ThreadWeaver/ThreadWeaver/Job
/usr/include/KF5/ThreadWeaver/ThreadWeaver/JobInterface
/usr/include/KF5/ThreadWeaver/ThreadWeaver/JobPointer
/usr/include/KF5/ThreadWeaver/ThreadWeaver/Lambda
/usr/include/KF5/ThreadWeaver/ThreadWeaver/ManagedJobPointer
/usr/include/KF5/ThreadWeaver/ThreadWeaver/QObjectDecorator
/usr/include/KF5/ThreadWeaver/ThreadWeaver/Queue
/usr/include/KF5/ThreadWeaver/ThreadWeaver/QueueAPI
/usr/include/KF5/ThreadWeaver/ThreadWeaver/QueueInterface
/usr/include/KF5/ThreadWeaver/ThreadWeaver/QueuePolicy
/usr/include/KF5/ThreadWeaver/ThreadWeaver/QueueSignals
/usr/include/KF5/ThreadWeaver/ThreadWeaver/QueueStream
/usr/include/KF5/ThreadWeaver/ThreadWeaver/Queueing
/usr/include/KF5/ThreadWeaver/ThreadWeaver/ResourceRestrictionPolicy
/usr/include/KF5/ThreadWeaver/ThreadWeaver/Sequence
/usr/include/KF5/ThreadWeaver/ThreadWeaver/ShuttingDownState
/usr/include/KF5/ThreadWeaver/ThreadWeaver/State
/usr/include/KF5/ThreadWeaver/ThreadWeaver/SuspendedState
/usr/include/KF5/ThreadWeaver/ThreadWeaver/SuspendingState
/usr/include/KF5/ThreadWeaver/ThreadWeaver/Thread
/usr/include/KF5/ThreadWeaver/ThreadWeaver/ThreadWeaver
/usr/include/KF5/ThreadWeaver/ThreadWeaver/Weaver
/usr/include/KF5/ThreadWeaver/ThreadWeaver/WeaverImplState
/usr/include/KF5/ThreadWeaver/ThreadWeaver/WeaverInterface
/usr/include/KF5/ThreadWeaver/ThreadWeaver/WorkingHardState
/usr/include/KF5/ThreadWeaver/threadweaver/
/usr/include/KF5/ThreadWeaver/threadweaver/collection.h
/usr/include/KF5/ThreadWeaver/threadweaver/debuggingaids.h
/usr/include/KF5/ThreadWeaver/threadweaver/dependency.h
/usr/include/KF5/ThreadWeaver/threadweaver/dependencypolicy.h
/usr/include/KF5/ThreadWeaver/threadweaver/destructedstate.h
/usr/include/KF5/ThreadWeaver/threadweaver/exception.h
/usr/include/KF5/ThreadWeaver/threadweaver/iddecorator.h
/usr/include/KF5/ThreadWeaver/threadweaver/inconstructionstate.h
/usr/include/KF5/ThreadWeaver/threadweaver/job.h
/usr/include/KF5/ThreadWeaver/threadweaver/jobinterface.h
/usr/include/KF5/ThreadWeaver/threadweaver/jobpointer.h
/usr/include/KF5/ThreadWeaver/threadweaver/lambda.h
/usr/include/KF5/ThreadWeaver/threadweaver/managedjobpointer.h
/usr/include/KF5/ThreadWeaver/threadweaver/qobjectdecorator.h
/usr/include/KF5/ThreadWeaver/threadweaver/queue.h
/usr/include/KF5/ThreadWeaver/threadweaver/queueapi.h
/usr/include/KF5/ThreadWeaver/threadweaver/queueing.h
/usr/include/KF5/ThreadWeaver/threadweaver/queueinterface.h
/usr/include/KF5/ThreadWeaver/threadweaver/queuepolicy.h
/usr/include/KF5/ThreadWeaver/threadweaver/queuesignals.h
/usr/include/KF5/ThreadWeaver/threadweaver/queuestream.h
/usr/include/KF5/ThreadWeaver/threadweaver/resourcerestrictionpolicy.h
/usr/include/KF5/ThreadWeaver/threadweaver/sequence.h
/usr/include/KF5/ThreadWeaver/threadweaver/shuttingdownstate.h
/usr/include/KF5/ThreadWeaver/threadweaver/state.h
/usr/include/KF5/ThreadWeaver/threadweaver/suspendedstate.h
/usr/include/KF5/ThreadWeaver/threadweaver/suspendingstate.h
/usr/include/KF5/ThreadWeaver/threadweaver/thread.h
/usr/include/KF5/ThreadWeaver/threadweaver/threadweaver.h
/usr/include/KF5/ThreadWeaver/threadweaver/threadweaver_export.h
/usr/include/KF5/ThreadWeaver/threadweaver/weaver.h
/usr/include/KF5/ThreadWeaver/threadweaver/weaverimplstate.h
/usr/include/KF5/ThreadWeaver/threadweaver/weaverinterface.h
/usr/include/KF5/ThreadWeaver/threadweaver/workinghardstate.h