In file included from ../../src/gsi/gsi/gsiDecl.h:45:0,
                 from ../../src/gsiqt/gsiQt.h:27,
                 from ../../src/gsiqt5/gsiDeclQIconEngine.cc:36:
../../src/gsi/gsi/gsiClass.h: In instantiation of ‘void gsi::_assign(tl::true_tag, void*, const void*) [with X = QIconEngine_Adaptor]’:
../../src/gsi/gsi/gsiClass.h:824:16:   required from ‘void gsi::Class<T, A>::assign(void*, const void*) const [with X = QIconEngine_Adaptor; Adapted = gsi::NoAdaptorTag]’
../../src/gsiqt5/gsiDeclQIconEngine.cc:910:1:   required from here
../../src/gsi/gsi/gsiClass.h:465:14: error: use of deleted function ‘QIconEngine_Adaptor& QIconEngine_Adaptor::operator=(const QIconEngine_Adaptor&)’
   *(X *)dest = *(const X *)src;
   ~~~~~~~~~~~^~~~~~~~~~~~~~~~~
../../src/gsiqt5/gsiDeclQIconEngine.cc:335:7: note: ‘QIconEngine_Adaptor& QIconEngine_Adaptor::operator=(const QIconEngine_Adaptor&)’ is implicitly deleted because the default definition would be ill-formed:
 class QIconEngine_Adaptor : public QIconEngine, public qt_gsi::QtObjectBase
       ^~~~~~~~~~~~~~~~~~~
../../src/gsiqt5/gsiDeclQIconEngine.cc:335:7: error: ‘QIconEngine& QIconEngine::operator=(const QIconEngine&)’ is private within this context
In file included from /usr/include/qt/QtGui/QIconEngine:1:0,
                 from ../../src/gsiqt5/gsiDeclQIconEngine.cc:30:
/usr/include/qt/QtGui/qiconengine.h:96:18: note: declared private here
     QIconEngine &operator=(const QIconEngine &other) Q_DECL_EQ_DELETE;
                  ^~~~~~~~
../../src/gsiqt5/gsiDeclQIconEngine.cc:335:7: error: use of deleted function ‘QIconEngine& QIconEngine::operator=(const QIconEngine&)’
 class QIconEngine_Adaptor : public QIconEngine, public qt_gsi::QtObjectBase
       ^~~~~~~~~~~~~~~~~~~
In file included from /usr/include/qt/QtGui/QIconEngine:1:0,
                 from ../../src/gsiqt5/gsiDeclQIconEngine.cc:30:
/usr/include/qt/QtGui/qiconengine.h:96:18: note: declared here
     QIconEngine &operator=(const QIconEngine &other) Q_DECL_EQ_DELETE;
                  ^~~~~~~~
make[1]: *** [Makefile:13482: gsiDeclQIconEngine.o] Error 1
make[1]: Leaving directory '/home/wobbuuu/Downloads/klayout-master/build-release/gsiqt'
make: *** [Makefile:556: sub-gsiqt-make_first] Error 2