Compilation error with QT_NO_SSL defined

Question

Compilation error with QT_NO_SSL defined

gfleck opened this issue 4 years ago · comments

I'm trying to compile with QT_NO_SSL defined on my qtnetwork-config.h but an error occurs.

My qtnetwork-config.h is like this:

#define QT_FEATURE_networkinterface 1
#define QT_FEATURE_bearermanagement 1
#define QT_FEATURE_dnslookup 1
#define QT_FEATURE_dtls 1
#define QT_FEATURE_ftp 1
#define QT_FEATURE_http 1
#define QT_FEATURE_localserver 1
#define QT_FEATURE_networkdiskcache 1
#define QT_FEATURE_networkproxy 1
#define QT_FEATURE_opensslv11 -1
#define QT_FEATURE_sctp -1
#define QT_NO_SCTP 
#define QT_FEATURE_socks5 1
#define QT_FEATURE_ssl 1
#define QT_FEATURE_udpsocket 1
#define QT_NO_SSL

The compilation error is:

In file included from /home/gfleck/qt/qt5.12.3/5.12.3/gcc_64/include/QtNetwork/QtNetwork:12:0,
from ../../include/QtQmqtt/QtQmqttDepends:4:
/home/gfleck/qt/qt5.12.3/5.12.3/gcc_64/include/QtNetwork/qdtls.h:128:20: error: ‘QSslSocket’ has not been declared
explicit QDtls(QSslSocket::SslMode mode, QObject *parent = nullptr);
^~~~~~~~~~
/home/gfleck/qt/qt5.12.3/5.12.3/gcc_64/include/QtNetwork/qdtls.h:128:40: error: expected ‘)’ before ‘mode’
explicit QDtls(QSslSocket::SslMode mode, QObject *parent = nullptr);
^~~~
/home/gfleck/qt/qt5.12.3/5.12.3/gcc_64/include/QtNetwork/qdtls.h:137:5: error: ‘QSslSocket’ does not name a type; did you mean ‘QUdpSocket’?
QSslSocket::SslMode sslMode() const;
^~~~~~~~~~
QUdpSocket

Does anyone have any idea what it might be?

Thanks.

ejvr · Answer 1 · Fri Mar 20 2020 13:25:08 GMT+0800 (China Standard Time)

It looks like you are working with the QtQmqtt module, which is part on QT itself. This is a different library doing the same thing. So you might want to post your question elsewhere.

…

-------- Original Message --------

On Mar 19, 2020, 20:32, gfleck wrote: I'm trying to compile with QT_NO_SSL defined on my qtnetwork-config.h but an error occurs. My qtnetwork-config.h is like this: #define QT_FEATURE_networkinterface 1 #define QT_FEATURE_bearermanagement 1 #define QT_FEATURE_dnslookup 1 #define QT_FEATURE_dtls 1 #define QT_FEATURE_ftp 1 #define QT_FEATURE_http 1 #define QT_FEATURE_localserver 1 #define QT_FEATURE_networkdiskcache 1 #define QT_FEATURE_networkproxy 1 #define QT_FEATURE_opensslv11 -1 #define QT_FEATURE_sctp -1 #define QT_NO_SCTP #define QT_FEATURE_socks5 1 #define QT_FEATURE_ssl 1 #define QT_FEATURE_udpsocket 1 #define QT_NO_SSL The compilation error is: > In file included from /home/gfleck/qt/qt5.12.3/5.12.3/gcc_64/include/QtNetwork/QtNetwork:12:0, > from ../../include/QtQmqtt/QtQmqttDepends:4: > /home/gfleck/qt/qt5.12.3/5.12.3/gcc_64/include/QtNetwork/qdtls.h:128:20: error: ‘QSslSocket’ has not been declared > explicit QDtls(QSslSocket::SslMode mode, QObject *parent = nullptr); > ^~~~~~~~~~ > /home/gfleck/qt/qt5.12.3/5.12.3/gcc_64/include/QtNetwork/qdtls.h:128:40: error: expected ‘)’ before ‘mode’ > explicit QDtls(QSslSocket::SslMode mode, QObject *parent = nullptr); > ^~~~ > /home/gfleck/qt/qt5.12.3/5.12.3/gcc_64/include/QtNetwork/qdtls.h:137:5: error: ‘QSslSocket’ does not name a type; did you mean ‘QUdpSocket’? > QSslSocket::SslMode sslMode() const; > ^~~~~~~~~~ > QUdpSocket Does anyone have any idea what it might be? Thanks. — You are receiving this because you are subscribed to this thread. Reply to this email directly, [view it on GitHub](#197), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/AENEMJJVP3RZ5RLCVURHXMTRIJXM3ANCNFSM4LPSQAIA).

gfleck · Answer 2 · Fri Mar 20 2020 15:40:29 GMT+0800 (China Standard Time)

Hi @ejvr,

I am not using any other module, I'm using the source code of this repository.

The target name is QtQmqtt and you can check it here: https://github.com/emqx/qmqtt/blob/master/src/mqtt/qmqtt.pro#L1

Matthias Dieter Wallnöfer · Answer 3 · Fri Mar 20 2020 17:17:57 GMT+0800 (China Standard Time)

/home/gfleck/qt/qt5.12.3/5.12.3/gcc_64/include/QtNetwork/qdtls.h:

But this is not a header of our library, so no idea how this one gets included when SSL has been disabled 🤔 .

gfleck · Answer 4 · Fri Mar 20 2020 18:18:13 GMT+0800 (China Standard Time)

Hi @mwallnoefer

qdtls.h is a qt standard library.

ejvr · Answer 5 · Sat Mar 21 2020 02:23:45 GMT+0800 (China Standard Time)

@gfleck You're completely right. I'm used to using cmake instead of qmake, so I was unaware of the QtQmqtt header. It is generated by qmake build process. That header includes QtQmqtt/QtQmqttDepends which in turn includes QNetwork/QNetwork which is part of QT. This one includes many other QT headers within the QNetwork module. Some of them are SSL related like qsslconfiguration.h, but there are not surrounded by any check on QT_NO_SSL.

I know that some SSL related headers should not be included if SSL is disabled, and apparently qdtls.h is one of them.

Anyway, this header is outside out control. We can't change the dependencies in qmqtt.pro either to get rid of the include in QtQmqttDepends, because it would break the build.

In short, the only solution I can see, it to replace the QtQmqtt include with a include of qmqtt.h. This will include all QMQTT classes you need, and it honours QT_NO_SSL.