qtmqtt build on windows

JungJIhyun

Hello~
I want to use qtmqtt module for my application.

so I downloaded source code from below git
git://code.qt.io/qt/qt5.git

and I downloaded source code for qtmqtt
git://code.qt.io/qt/qtmqtt.git

I located qtmqtt below all gt5 source (qt5>qtmqtt)

I followed below stelp

$ perl init-repository
$ configure -developer-build -opensource -nomake examples -nomake tests
$ mingw32-make

When I check Makefile
It seems it's not include qtmqtt module

Is there any way to include qtmqtt submodule when I build whole source??

or I want to buile qtmqtt itself.
but I don't know how to build it .

Any helps..
Thanks~

SGaist

Hi and welcome to devnet,

There's no need to build the whole of Qt if you only need the QtMqtt module, just build it with the version you already use for development.

Also, unless you plan to hack on Qt itself, drop the developer-build option.

Pablo J. Rogina

@JungJIhyun said in qtmqtt build on windows:

$ mingw32-make

and don't forget to mingw32-make install

JungJIhyun

@SGaist @Pablo-J-Rogina

Thanks for the your help.
When I try qtmqtt build using mingw32-make below errors are come

C:\Qt5\qt5\qtmqtt\src\mqtt\qmqttconnection.cpp:169:39: error: 'errorOccurred' is not a member of 'QAbstractSocket'
connect(socket, &QAbstractSocket::errorOccurred, this, &QMqttConnection::transportError);
^~~~~~~~~~~~~
C:\Qt5\qt5\qtmqtt\src\mqtt\qmqttconnection.cpp: In member function 'void QMqttConnection::finalize_connack()':
C:\Qt5\qt5\qtmqtt\src\mqtt\qmqttconnection.cpp:1452:26: error: 'class QList<QMqttTopicName>' has no member named 'resize'; did you mean 'size'?
m_receiveAliases.resize(m_clientPrivate->m_serverConnectionProperties.maximumTopicAlias());
^~~~~~
size
C:\Qt5\qt5\qtmqtt\src\mqtt\qmqttconnection.cpp:1453:26: error: 'class QList<QMqttTopicName>' has no member named 'resize'; did you mean 'size'?
m_publishAliases.resize(m_clientPrivate->m_connectionProperties.maximumTopicAlias());
^~~~~~
size
mingw32-make[3]: *** [Makefile.Debug:1495: .obj/debug/qmqttconnection.o] Error 1

Pablo J. Rogina

@JungJIhyun said in qtmqtt build on windows:

When I try qtmqtt build using mingw32-make below errors are come

The idea is that you have Qt already installed, either by installing pre-built files for your OS or by building Qt yourself, before building mqtt module.

Is that your case?
Could you please describe your environment (OS, Qt version, how you installed it, etc.)?

AndreaFurlani

I'm having the same issue using the last version of Qt and Qt Creator on Linux 20.04 .
I used the following commands in the terminal:

git://code.qt.io/qt/qt5.git
cd qtmqtt
qmake .
make

and the make command returns the same error described above:

qmqttconnection.cpp: In member function ‘bool QMqttConnection::ensureTransport(bool)’:
qmqttconnection.cpp:169:39: error: ‘errorOccurred’ is not a member of ‘QAbstractSocket’
  169 |     connect(socket, &QAbstractSocket::errorOccurred, this, &QMqttConnection::transportError);
      |                                       ^~~~~~~~~~~~~
qmqttconnection.cpp: In member function ‘void QMqttConnection::finalize_connack()’:
qmqttconnection.cpp:1452:26: error: ‘class QList<QMqttTopicName>’ has no member named ‘resize’; did you mean ‘size’?
 1452 |         m_receiveAliases.resize(m_clientPrivate->m_serverConnectionProperties.maximumTopicAlias());
      |                          ^~~~~~
      |                          size
qmqttconnection.cpp:1453:26: error: ‘class QList<QMqttTopicName>’ has no member named ‘resize’; did you mean ‘size’?
 1453 |         m_publishAliases.resize(m_clientPrivate->m_connectionProperties.maximumTopicAlias());
      |                          ^~~~~~
      |                          size
make[2]: *** [Makefile:660: .obj/qmqttconnection.o] Error 1
make[2]: exit from directory «/home/furla/qtmqtt/src/mqtt»
make[1]: *** [Makefile:47: sub-mqtt-make_first] Error 2
make[1]: exit from directory «/home/furla/qtmqtt/src»
make: *** [Makefile:49: sub-src-make_first] Error 2

SGaist

If you did nothing special, then you have the dev branch checked out. Switch the the branch matching your Qt version.

AndreaFurlani

@SGaist Thank you for your fast reply, how can I do that?

SGaist

Using git checkout <name of the branch/tag>

AndreaFurlani

This post is deleted!

AndreaFurlani

@SGaist I downloaded the correct version (for Qt 5.15) but now it returns a new error:

In file included from qmqttauthenticationproperties.cpp:30:
qmqttauthenticationproperties.h:33:10: fatal error: QtMqtt/qmqttglobal.h: no such file or directory
   33 | #include <QtMqtt/qmqttglobal.h>
      |          ^~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [Makefile:528: .obj/qmqttauthenticationproperties.o] Error 1
make[2]: exit from directory «/home/furla/Scaricati/qtmqtt/src/mqtt»
make[1]: *** [Makefile:47: sub-mqtt-make_first] Error 2
make[1]: exit from directory «/home/furla/Scaricati/qtmqtt/src»
make: *** [Makefile:49: sub-src-make_first] Error 2

SGaist

Did you cleanup before restarting the build ?

AndreaFurlani

What do you mean with cleanup?

AndreaFurlani

Following this thread https://forum.qt.io/topic/100705/how-can-i-use-the-qtmqtt-code/14 , I remove all the "QtMqtt" from the headers files, now I can build the project without errors.
On the other hand when I run the project, in the application output panel I get this error:

10:41:49: Starting /home/furla/Qt/EDALAB/build-qtmqtt-Desktop_Qt_5_15_0_GCC_64bit-Debug/examples/mqtt/consolepubsub/qtmqtt_pub ...
10:41:49: The process failed to start. Either the invoked program "/home/furla/Qt/EDALAB/build-qtmqtt-Desktop_Qt_5_15_0_GCC_64bit-Debug/examples/mqtt/consolepubsub/qtmqtt_pub" is missing, or you may have insufficient permissions to invoke the program.
10:41:49: Cannot execute "/home/furla/Qt/EDALAB/build-qtmqtt-Desktop_Qt_5_15_0_GCC_64bit-Debug/examples/mqtt/consolepubsub/qtmqtt_pub": no such File or directory
10:41:49: /home/furla/Qt/EDALAB/build-qtmqtt-Desktop_Qt_5_15_0_GCC_64bit-Debug/examples/mqtt/consolepubsub/qtmqtt_pub exited with code -1

I looked into the folder and there are:

MakeFile
*Makefile.qtmqtt_pub
*MakeFile.qtmqtt_sub

And if I use the command make in this folder I get this error:

In file included from /home/furla/Qt/EDALAB/qtmqtt-5.15/examples/mqtt/consolepubsub/main_pub.cpp:51:
/home/furla/Qt/EDALAB/qtmqtt-5.15/examples/mqtt/consolepubsub/configuration.h:59:10: fatal error: QMqttClient: no such File or directory
   59 | #include <QMqttClient>
      |          ^~~~~~~~~~~~~
compilation terminated.
make[1]: *** [Makefile.qtmqtt_pub:719: .obj/main_pub.o] Error 1
make[1]: exit from directory «/home/furla/Qt/EDALAB/build-qtmqtt-Desktop_Qt_5_15_0_GCC_64bit-Debug/examples/mqtt/consolepubsub»
make: *** [Makefile:61: sub-qtmqtt_pub-pro-install_subtargets-ordered] Error 2

SGaist

@AndreaFurlani said in qtmqtt build on windows:

What do you mean with cleanup?

Nuke the build folder to ensure there's no stuff from your failed attempt that will influence this new one.

Then ensure you have all the required tools to build Qt from git since you cloned the sources from there. Since you are on Linux, it is likely the case but better check then guess.

AndreaFurlani

@SGaist Ok I already deleted everything before to retry and as I described above I'm getting a new error.
I think I have all the right tools installed and also the Qt Creator options should be ok since I can run every example project without problems.
Moreover, instead of using the command clone, I maually downloaded the .zip folder from git corresponding to my Qt version

SGaist

Can you give what your actual state is now ?
Did you build the module successfully ?
If so, did you call the equivalent of make install ?

ThirdStrand

For other searchers!

There is a dependency package, at least on RPi by the name of:

qt5base-private-dev

in order to build qtmqtt.

@SGaist , thanks for the prompt on git checkout <version> as I keep forgetting that detail when seeking a specific version.