Qt Creator to use Desktop kit get Error with: “Application finished with exit code 126.”

SoheilSabz

I am using the QT Creator for my laptop (Linux LMDE 3 Cindy OS) And for Raspberry Cross-compiling.

I have installed the QT based of this instruction and by this setting:

    mkdir ~/raspi
    cd ~/raspi
    git clone https://github.com/raspberrypi/tools
    mkdir sysroot sysroot/usr sysroot/opt

    rsync -avz pi@raspberrypi_ip:/lib sysroot
    rsync -avz pi@raspberrypi_ip:/usr/include sysroot/usr
    rsync -avz pi@raspberrypi_ip:/usr/lib sysroot/usr
    rsync -avz pi@raspberrypi_ip:/opt/vc sysroot/opt
wget http://download.qt.io/official_releases/qt/5.12/5.12.3/single/ qt-everywhere-src-5.12.3.tar.xz
tar xvf  qt-everywhere-src-5.12.3.tar.xz
cd  qt-everywhere-src-5.12.3

./configure -release -opengl es2 -device linux-rasp-pi-g++
-device-option CROSS_COMPILE=~/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-
-sysroot ~/raspi/sysroot -opensource -confirm-license -skip qtwayland -skip qtlocation -skip qtscript -make libs -prefix /usr/local/qt5pi -extprefix ~/raspi/qt5pi -hostprefix ~/raspi/qt5 -no-use-gold-linker -v -no-gbm

    make
    make install

but when i go to my QT Creator and i have built a sample Qt Widget Application.
My desktop2.pro file is this kind:

#-------------------------------------------------
#
# Project created by QtCreator 2019-05-29T19:53:02
#
#-------------------------------------------------

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = desktop2
TEMPLATE = app

# The following define makes your compiler emit warnings if you use
# any feature of Qt which has been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

CONFIG += c++11

SOURCES += \
        main.cpp \
        mainwindow.cpp

HEADERS += \
        mainwindow.h

FORMS += \
        mainwindow.ui

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /home/so/Desktop/trash/desktop1/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

SO when i want to use my Desktop Kit and want to run it in my PC (not in Raspberry), i get this Error:

20:46:55: Starting /home/so/Desktop/trash/desktop1/desktop2/bin/desktop2 ...
bash: /home/so/Desktop/trash/desktop1/desktop2/bin/desktop2: cannot execute binary file: Exec format error
bash: /home/so/Desktop/trash/desktop1/desktop2/bin/desktop2: Success
20:46:55: Application finished with exit code 126.

My Qt Version is shown Below:
enter image description here

My Desktop kit setting is shown blown:
Desktop kit setting

AND my Desktop PC SS Device setting is shown below:

Desktop PC SS Device setting

AND My GCC Compiler setting shown below:
GCC Compiler setting

AND My qt Raspberry Compiler setting is shown Below:
enter image description here

My Guesses is there is some conflict between The GCC Compiler AND Qt
Version Which is V 5.12.3. So must i use lower Qt version?
Or i Must install again that qt Version at new folder with new
Configuration setting?
Or what any other recommendation?

My this question link at Stack-exchange community:
https://superuser.com/questions/1443812/%d9%92qt-creator-error-with-application-finished-with-exit-code-126

UPDATE: Near the Desktop kit name in Qt Creator GUI there is one red caution mark which when i hover my mouse on it show this information:

Error: The compiler "GCC

by this error:

Error: The compiler "GCC (C++,X86 64bit in /usr/bin)" (X86-linux-generic-elf-64bit) cannot produce code for the Qt Version "Qt 5.12.3 (qt5)" (arm-linux-generic-elf-32bit).

Thanks a lot.

SGaist

Hi and welcome to devnet,

There's a red icon beside your desktop Kit. What does it tell you when you hover it.

Your setup looks a bit strange, it makes it look as if you are using your desktop machine as a device from your Pi. Which is usually the other way around.

SoheilSabz

Near the Desktop kit name in Qt Creator GUI there is one red caution mark which when i hover my mouse on it show this information:

Error: The compiler "GCC

by this error:

Error: The compiler "GCC (C++,X86 64bit in /usr/bin)" (X86-linux-generic-elf-64bit) cannot produce code for the Qt Version "Qt 5.12.3 (qt5)" (arm-linux-generic-elf-32bit).

SGaist

From the looks of it you are mixing stuff quite strangely.

Why are you trying to use an ARM build of Qt with your desktop x86_64 compiler ? If you want to cross-compile for your target, then you need a cross-compiler in the first place.

SoheilSabz

@SGaist said in Qt Creator to use Desktop kit get Error with: “Application finished with exit code 126.”:

ARM build of Qt

Excuses me i am confused, i know the cross-compiling is to write code in my Linux OS and run in for example my Raspberry, but as i mentioned i don't want to do this now i need to test my codes via my laptop Linux OS ( (Via Desktop Kit). So how could i do that? must i install new qt v5.12.3 with new configuration?, or could i use new GCC compiler setting to for my Desktop Kit?

Excuses me i am newbie in Qt.

SGaist

No, you can use your distribution provided Qt. However it's a good idea to keep in sync with the version you are going to use to cross-compile.

From the looks of it, you tried to use your cross-compiled Qt with your desktop compiler. Hence your error.