redefiniton of 'QObject'

CKurdu

When I compiled my source code, I got this error only in macOS.

/Users/ckurdu/Qt/5.15.2/clang_64/lib/QtNetwork.framework/Headers/qsslconfiguration.h:82: error: redefinition of 'QObject'
In file included from /Users/ckurdu/Projects/local/qtcms/output/x64/x84/release/modules/dashboard/dashboard_autogen/mocs_compilation.cpp:3:
In file included from /Users/ckurdu/Projects/local/qtcms/output/x64/x84/release/modules/dashboard/dashboard_autogen/EWIEGA46WW/moc_dashboard.cpp:10:
In file included from /Users/ckurdu/Projects/local/qtcms/output/x64/x84/release/modules/dashboard/dashboard_autogen/EWIEGA46WW/../../../../../../../../qtcms/modules/dashboard/dashboard.h:11:
In file included from /Users/ckurdu/Projects/local/qtcms/qtcms/components/factory2/websocketserver/wsserver.h:4:
In file included from /Users/ckurdu/Qt/5.15.2/clang_64/lib/QtWebSockets.framework/Headers/QWebSocketServer:1:
In file included from /Users/ckurdu/Qt/5.15.2/clang_64/lib/QtWebSockets.framework/Headers/qwebsocketserver.h:51:
In file included from /Users/ckurdu/Qt/5.15.2/clang_64/lib/QtNetwork.framework/Headers/QSslConfiguration:1:
/Users/ckurdu/Qt/5.15.2/clang_64/lib/QtNetwork.framework/Headers/qsslconfiguration.h:82:24: error: redefinition of 'QObject'
class Q_NETWORK_EXPORT QSslConfiguration
                       ^
/Users/ckurdu/Projects/local/qtcms/qtcms/components/httpserver/httpconnectionhandler.h:22:29: note: expanded from macro 'QSslConfiguration'
  #define QSslConfiguration QObject
                            ^
/Users/ckurdu/Qt/5.15.2/clang_64/lib/QtCore.framework/Headers/qobject.h:127:21: note: previous definition is here
class Q_CORE_EXPORT QObject
                    ^

Do you have any clue about it?

Chris Kawa

@CKurdu Looking at the source of these libraries QSslConfiguration in qsslconfiguration.h is specified if QT_NO_SSL is not defined and that macro in httpconnectionhandler.h is defined when QT_NO_SSL is defined, so... Qt includes think SSL is supported and that httpserver header thinks that it's not. I don't know how your project is configured but you've got a mismatch there.

CKurdu

@Chris-Kawa Thank you,
You gave me a good hint and I think I solved the problem.

As you wrote, the problem is related to unlinked SSL.