The header file was created in the source directory before, where it
wasn't found by the generated C files in the build directory.
plugins/plugin_loader.h plugins/plugin.h plugins/plugin_feature.h \
processing/jobs/job.h processing/jobs/callback_job.h processing/processor.h \
processing/scheduler.h processing/watcher.h selectors/traffic_selector.h \
-settings/settings.h threading/thread_value.h \
+settings/settings.h settings/settings_parser.h threading/thread_value.h \
threading/thread.h threading/windows/thread.h \
threading/mutex.h threading/condvar.h threading/spinlock.h threading/semaphore.h \
threading/rwlock.h threading/rwlock_condvar.h threading/lock_profiler.h \