https://github.com/qt/qtcloudmessaging example does not compile

[Ilnur]

I want to receive push notification from firebase, so took qt/qtCloudMessaging module, installed it, included in .pro file:

QT += quick quickcontrols2 websockets cloudmessagingfirebase cloudmessaging

and tried to run example code in README
The problems is on this lines:

#include <QCloudMessaging>
#include <QCloudMessagingFirebaseProvider
...
int main() {
  QCloudMessaging *pushServices = new QCloudMessaging();

  //***** OR For Firebase mobile systems:
  QCloudMessagingFirebaseProvider *m_firebaseService = new QCloudMessagingFirebaseProvider();

  QVariantMap provider_params;
  provider_params["SERVER_API_KEY"] = "Get your SERVER API KEY from the google firebase console";
  pushServices->registerProvider("GoogleFireBase", m_firebaseService, provider_params);

  return 0;
}

with such error:

...../main.cpp:43: error: cannot initialize a parameter of type 'QCloudMessagingProvider *' with an lvalue of type 'QCloudMessagingFirebaseProvider *'

by the time in qcloudmessagin.h we have definition of this method:

    Q_INVOKABLE bool registerProvider(const QString &providerId,
                                      QCloudMessagingProvider *provider,
                                      const QVariantMap &parameters = QVariantMap());

so, as second parameter method wants to take QCloudMessagingProvider, but got QCloudMessagingFirebaseProvider, which inherits QCloudMessagingProvider
How to solve this problem?
I know, that I am not expert in C++, may be its pretty easy to solve...

[sierdzio]

@Ilnur said in https://github.com/qt/qtcloudmessaging example does not compile:

which inherits QCloudMessagingProvider

Are you sure? Can your show header and constructor implementation of QCloudMessagingFirebaseProvider?

[Ilnur]

@sierdzio
https://github.com/qt/qtcloudmessaging/blob/master/src/cloudmessaging/qcloudmessaging.h#L58
that is header file

about inherits
https://github.com/qt/qtcloudmessaging/blob/master/src/cloudmessagingfirebase/qcloudmessagingfirebaseprovider.h#L47

[sierdzio]

OK code looks good, no idea why it does not work.

[SGaist]

Hi,

What compiler are you using ?

[Ilnur]

@SGaist

[SGaist]

That doesn't fully answer the question. What version of gcc are you using ?
Are you using Qt Creator to build the module ?

[Ilnur]

here I also have one more problem, firebase/app.h not found
May be I installed module incorrectly?
What I did:

/qt_dir/path_to_android_qmake/qmake CONFIG+=firebase
make
sudo make install

Qt 5.12.1 (x86_64-little_endian-lp64 shared (dynamic) release build; by GCC 5.3.1 20160406 (Red Hat 5.3.1-6)) on "xcb"
OS: Ubuntu 18.04.2 LTS [linux version 4.15.0-47-generic]

Architecture: x86_64; features: SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2

clang++ --version:

/home/ilnur/Android/android-ndk-r18b/toolchains/llvm/prebuilt/linux-x86_64/bin/clang++ --version
Android (4751641 based on r328903) clang version 7.0.2 (https://android.googlesource.com/toolchain/clang 003100370607242ddd5815e4a043907ea9004281) (https://android.googlesource.com/toolchain/llvm 1d739ffb0366421d383e04ff80ec2ee591315116) (based on LLVM 7.0.2svn)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/ilnur/Android/android-ndk-r18b/toolchains/llvm/prebuilt/linux-x86_64/bin

[Ilnur]

@SGaist said in https://github.com/qt/qtcloudmessaging example does not compile:

Are you using Qt Creator to build the module ?

no, I built via terminal

qmake CONFIG+=firebase
make
sudo make install

[SGaist]

Might be a silly question but did you install the firebase SDK ?

[Robin Hood]

Hello, I would like to start the qtcloudmessaging example!
I followed the instructions on qtcloudmessaging-examples
Can you help me with this?

This is the error "Project ERROR: Unknown module(s) in QT: cloudmessagingfirebase"

`cd firebase\ && ( if not exist Makefile D:\Qt\5.12.5\mingw73_64\bin\qmake.exe -o Makefile C:\Users\rjung\Desktop\Beispiel-Projekte\Push-Projekte\qtcloudmessaging-examples-master\firebase\firebase.pro -spec win32-g++ "CONFIG+=debug" "CONFIG+=qml_debug" "CONFIG += firebase" ) && D:/Qt/Tools/mingw730_64/bin/mingw32-make -f Makefile clean
mingw32-make[1]: Entering directory 'C:/Users/rjung/Desktop/Beispiel-Projekte/Push-Projekte/build-cloudmessaging-Desktop_Qt_5_12_5_MinGW_64_bit-Debug/firebase'
cd QtCloudMessagingFirebaseChat\ && ( if not exist Makefile D:\Qt\5.12.5\mingw73_64\bin\qmake.exe -o Makefile C:\Users\rjung\Desktop\Beispiel-Projekte\Push-Projekte\qtcloudmessaging-examples-master\firebase\QtCloudMessagingFirebaseChat\QtCloudMessagingFirebaseChat.pro -spec win32-g++ "CONFIG+=debug" "CONFIG+=qml_debug" "CONFIG += firebase" ) && D:/Qt/Tools/mingw730_64/bin/mingw32-make -f Makefile clean
Project ERROR: Unknown module(s) in QT: cloudmessagingfirebase
mingw32-make[1]: *** [Makefile:55: sub-QtCloudMessagingFirebaseChat-clean-ordered] Error 3
mingw32-make[1]: Leaving directory 'C:/Users/rjung/Desktop/Beispiel-Projekte/Push-Projekte/build-cloudmessaging-Desktop_Qt_5_12_5_MinGW_64_bit-Debug/firebase'
mingw32-make: *** [Makefile:55: sub-firebase-clean-ordered] Error 2
18:43:30: Der Prozess "D:\Qt\Tools\mingw730_64\bin\mingw32-make.exe" wurde mit dem Rückgabewert 2 beendet.

Before I add this in qmake:
"CONFIG += firebase"

Because I am not allowed to set my environment variables, I added the path for GOOGLE_FIREBASE_SDK in .pro file:
GOOGLE_FIREBASE_SDK = <Path_to_Firebase_SDK>

isEmpty(ENV_FIREBASE_SDK) {
ENV_FIREBASE_SDK = $${GOOGLE_FIREBASE_SDK}
...

[SGaist]

Hi,

Did you build the module itself ? With firebase support ?

[Robin Hood]

This post is deleted!

[Robin Hood]

So i've been building a firebase project under firebase console.
I downloaded the qt project from git (https://github.com/snowgrains/qtcloudmessaging-examples) and followed the instructions. Basically i just changed some paths and added the google-service.json ...

But I think I must have forgotten something in the front if qt does not recognize the module.

[SGaist]

Hence my question: did you build that Qt module ?

[Robin Hood]

I don't know...
How would you build Qt modules?

[Robin Hood]

I think ...
In the manual (https://github.com/snowgrains/qtcloudmessaging-examples) I did it until step 3. Step 4 is not applicable for me, because I only want to use firebase.

But step 5 does not work. I think this is the problem, which is why he doesn't know the module.

Step 5 is:
Install first the QtCloudMessagingfrom command line with:
qmake "CONFIG += embedded-kaltiot firebase" make make install

I tried that, but the command does not work on my Windows computer.

C:\Users\...\Desktop\Beispiel-Projekte\Push-Projekte\qtcloudmessaging-examples-master>qmake "CONFIG += embedded-kaltiot firebase" make make install
Der Befehl "qmake" ist entweder falsch geschrieben oder
konnte nicht gefunden werden.

Afterwards I tried it like in the Qt Creator ...

C:\Users\...\Desktop\Beispiel-Projekte\Push-Projekte\qtcloudmessaging-examples-master>D:\Qt\5.12.5\mingw73_64\bin\qmake.exe C:\Users\...\Desktop\Beispiel-Projekte\Push-Projekte\qtcloudmessaging-examples-master\cloudmessaging.pro -spec win32-g++ "CONFIG+=debug" "CONFIG+=qml_debug" "CONFIG += embedded-kaltiot firebase" && D:/Qt/Tools/mingw730_64/bin/mingw32-make.exe qmake_all
Info: creating stash file C:\Users\...\Desktop\Beispiel-Projekte\Push-Projekte\qtcloudmessaging-examples-master\.qmake.stash
Project ERROR: Cannot run compiler 'g++'. Output:
===================
===================
Maybe you forgot to setup the environment?

[jsulm]

@Robin-Hood Use the qtenv2.bat script from your MinGW installation to set up the environment properly.

[Robin Hood]

@jsulm said in https://github.com/qt/qtcloudmessaging example does not compile:

Use the qtenv2.bat script from your MinGW installation to set up the environment properly.

I changed this file

@echo off
echo Setting up environment for Qt usage...
set PATH=D:\Qt\5.12.5\mingw73_64\bin;D:/Qt/Tools/mingw730_64\bin;%PATH%
set GOOGLE_FIREBASE_SDK=C:\Users\name\firebase_cpp_sdk_6.14.0\firebase_cpp_sdk
cd /D D:\Qt\5.12.5\mingw73_64

I still get the error message on the console

C:\Users\...\Desktop\Beispiel-Projekte\Push-Projekte\qtcloudmessaging-examples-master>D:\Qt\5.12.5\mingw73_64\bin\qmake.exe C:\Users\...\Desktop\Beispiel-Projekte\Push-Projekte\qtcloudmessaging-examples-master\cloudmessaging.pro -spec win32-g++ "CONFIG+=debug" "CONFIG+=qml_debug" "CONFIG += embedded-kaltiot firebase" && D:/Qt/Tools/mingw730_64/bin/mingw32-make.exe qmake_all
Info: creating stash file C:\Users\...\Desktop\Beispiel-Projekte\Push-Projekte\qtcloudmessaging-examples-master\.qmake.stash
Project ERROR: Cannot run compiler 'g++'. Output:
===================
===================
Maybe you forgot to setup the environment?

as well as in qt-creator

"Project ERROR: Unknown module(s) in QT: cloudmessagingfirebase"

[jsulm]

@Robin-Hood said in https://github.com/qt/qtcloudmessaging example does not compile:

I changed this file

Why? There is no need to change this file.
And did you execute that file?
As you can see it still fails to find the compiler.