Building QtMqtt in ubuntu

[michelarnaud]

Hello,
git clone https://github.com/qt/qtmqtt.git
cd qtmqtt
mkdir build
cd build
sudo make

and i changed this line
//connect(socket, &QAbstractSocket::errorOccurred, this, &QMqttConnection::transportError);
by this one:
connect(socket, QOverloadQAbstractSocket::SocketError::of(&QAbstractSocket::error), this, &QMqttConnection::transportError);
when want to compile the module qtmqtt, but i have this error:

/home/michel/mqtt/qtmqtt/src/mqtt/qmqtttopicname.cpp:148:48: error: ‘KeepEmptyParts’ is not a member of ‘Qt’
148 | return d->name.split(QLatin1Char('/'), Qt::KeepEmptyParts);
| ^~~~~~~~~~~~~~
/home/michel/mqtt/qtmqtt/src/mqtt/qmqtttopicname.cpp: In function ‘size_t qHash(const QMqttTopicName&, size_t)’:
/home/michel/mqtt/qtmqtt/src/mqtt/qmqtttopicname.cpp:189:36: warning: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second:
189 | return qHash(name.d->name, seed);
| ^
In file included from /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:47,
from /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:49,
from /usr/include/x86_64-linux-gnu/qt5/QtCore/qabstractanimation.h:43,
from /usr/include/x86_64-linux-gnu/qt5/QtCore/QtCore:6,
from ../../include/QtMqtt/QtMqttDepends:3:
/usr/include/x86_64-linux-gnu/qt5/QtCore/qhashfunctions.h:99:41: note: candidate 1: ‘uint qHash(const QString&, uint)’
99 | Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
| ^~~~~
/home/michel/mqtt/qtmqtt/src/mqtt/qmqtttopicname.cpp:187:8: note: candidate 2: ‘size_t qHash(const QMqttTopicName&, size_t)’
187 | size_t qHash(const QMqttTopicName &name, size_t seed) Q_DECL_NOTHROW

Thank you in advance.

Michel Arnaud

[SGaist]

Hi am welcome to devnet,

What version of Qt ?
What compiler ?
What code ?

Also, please do an out of source build.

[michelarnaud]

@SGaist
I resolved the problem
I use Qt 5.12.8

and I got the branch back :git clone https://code.qt.io/qt/qtmqtt.git --branch 5.12.8

Thank you.

Michel Arnaud