/usr/include/qxt/QxtZeroconf/ is in libqxt-dev 0.6.2-1.
This file is owned by root:root, with mode 0o755.
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/usr/include/qxt/QxtZeroconf/QxtDiscoverableService
/usr/include/qxt/QxtZeroconf/QxtDiscoverableServiceName
/usr/include/qxt/QxtZeroconf/QxtServiceBrowser
/usr/include/qxt/QxtZeroconf/QxtZeroConf
/usr/include/qxt/QxtZeroconf/qxtavahipoll.h
/usr/include/qxt/QxtZeroconf/qxtavahipoll_p.h
/usr/include/qxt/QxtZeroconf/qxtdiscoverableservice.h
/usr/include/qxt/QxtZeroconf/qxtdiscoverableservice_p.h
/usr/include/qxt/QxtZeroconf/qxtdiscoverableservicename.h
/usr/include/qxt/QxtZeroconf/qxtmdns_avahi.h
/usr/include/qxt/QxtZeroconf/qxtmdns_avahi_p.h
/usr/include/qxt/QxtZeroconf/qxtservicebrowser.h
/usr/include/qxt/QxtZeroconf/qxtservicebrowser_p.h