This bug was fixed in the package qttools-opensource-src - 5.11.2-5
--------------- qttools-opensource-src (5.11.2-5) unstable; urgency=medium
* Build qdoc with QDOC_PASS_ISYSTEM defined. This is needed because qmake passes Qt include directories as -isystem flags, not as regular -I. See QTBUG-70896, LP: #1799111.
-- Dmitry Shachnev <email address hidden> Thu, 15 Nov 2018 11:03:30 +0300
This bug was fixed in the package qttools- opensource- src - 5.11.2-5
--------------- opensource- src (5.11.2-5) unstable; urgency=medium
qttools-
* Build qdoc with QDOC_PASS_ISYSTEM defined. This is needed because qmake
passes Qt include directories as -isystem flags, not as regular -I.
See QTBUG-70896, LP: #1799111.
-- Dmitry Shachnev <email address hidden> Thu, 15 Nov 2018 11:03:30 +0300