4. Deploying qt program to self contained .exe on linux

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Deploying qt program to self contained .exe on linux


  • Qt Creator Version: Qt creator 4.9.1 Based on Qt 5.12.3
    Qt version: 5.12.2
    Linux: Ubuntu 16.04 on a VM

    I'm very new to Qt and i'm going through the examples and test deploying them onto my linux device. From my research, it seems the linuxdeployqt qpplication found here: https://github.com/probonopd/linuxdeployqt is the way to do it on linux.

    Steps:
    I downloaded release build 7: linuxdeployqt-7-x86_64.AppImage
    Made this file executable
    I created a release build of the dashboard example project found in Qt creator
    I copied the release binary to a folder in the same directory as the linuxdeploy appimage

    I them tried running the appimage in this directory with the below error:

    ghguest@ghguest-VirtualBox:~/Downloads$ ./linuxdeployqt-7-x86_64.AppImage Dashboard/dashboard
linuxdeployqt 6 (commit d41e234), build 724 built on 2020-07-31 15:51:47 UTC
FHS-like mode with PREFIX, fhsPrefix: "/../.."
QDir::exists: Empty or null file name
ERROR: Error: Could not find app-binary ""

    Can someone suggest a solution here? Thanks in advance.

    UPDATE 1:
    After running with -verbose=2 tag, i get the following errors:

    ghguest@ghguest-VirtualBox:~/Downloads$ ./linuxdeployqt-7-x86_64.AppImage Dashboard/dashboard -verbose=2
linuxdeployqt 6 (commit d41e234), build 724 built on 2020-07-31 15:51:47 UTC
FHS-like mode with PREFIX, fhsPrefix: "/home/ghguest/Downloads"
app-binary: "/home/ghguest/Downloads/Dashboard/dashboard"
appDirPath: "/home/ghguest"
relativeBinPath: "Downloads/bin/dashboard"
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
ERROR: getBinaryRPaths: "objdump: /home/ghguest/GrayhillDisplayPlatform/sysroot-target/usr/share/gdb/auto-load/libgobject-2.0.so.0.3000.2-gdb.py: File format not recognized\n"
ERROR: findDependencyInfo: ""
ERROR: getBinaryRPaths: "objdump: /home/ghguest/GrayhillDisplayPlatform/sysroot-target/usr/share/gdb/auto-load/libglib-2.0.so.0.3000.2-gdb.py: File format not recognized\n"
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
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ERROR: getBinaryRPaths: "objdump: /home/ghguest/GrayhillDisplayPlatform/sysroot-target/usr/lib/nm-n.libdirect-1.4.so.0: File format not recognized\n"
ERROR: findDependencyInfo: ""
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ERROR: getBinaryRPaths: "objdump: /home/ghguest/GrayhillDisplayPlatform/sysroot-target/usr/lib/nm-n.libfusion-1.4.so.0: File format not recognized\n"
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
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ERROR: findDependencyInfo: ""
ERROR: getBinaryRPaths: "objdump: /home/ghguest/GrayhillDisplayPlatform/sysroot-target/usr/lib/nm-n.libdirectfb-1.4.so.0: File format not recognized\n"
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
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ERROR: findDependencyInfo: ""
ERROR: ldd outputLine: "libicuuc.so.56 => not found"
ERROR: for binary: "/home/ghguest/Qt/5.12.2/gcc_64/qml/QtQuick/Dialogs/Private/../../../../lib/libicui18n.so.56"
ERROR: Please ensure that all libraries can be found by ldd. Aborting.

    UPDATE 2:
    After creating a fresh install of the VM using the OVA provided by the device manufacturer (Grayhill 3D70), I rebuilt the binary and tried again with the -verbose=2 tag. See below new errors..

    ghguest@ghguest-VirtualBox:~/Downloads$ ./linuxdeployqt-7-x86_64.AppImage Dashboard/dashboard -verbose=2
linuxdeployqt 6 (commit d41e234), build 724 built on 2020-07-31 15:51:47 UTC
Not using FHS-like mode
app-binary: "/home/ghguest/Downloads/Dashboard/dashboard"
appDirPath: "/home/ghguest/Downloads/Dashboard"
relativeBinPath: "dashboard"
ERROR: findDependencyInfo: ""
ERROR: findDependencyInfo: ""
WARNING: Could not find any external Qt libraries to deploy in "/home/ghguest/Downloads/Dashboard"
WARNING: Perhaps linuxdeployqt was already used on "/home/ghguest/Downloads/Dashboard" ?
WARNING: If so, you will need to rebuild "/home/ghguest/Downloads/Dashboard" before trying again.
WARNING: Or ldd does not find the external Qt libraries but sees the system ones.
WARNING: If so, you will need to set LD_LIBRARY_PATH to the directory containing the external Qt libraries before trying again.
WARNING: FIXME: https://github.com/probonopd/linuxdeployqt/issues/2
Log: Checking rpath in "/home/ghguest/Downloads/Dashboard/dashboard"
Log: Changing rpath in "/home/ghguest/Downloads/Dashboard/dashboard" to "$ORIGIN/lib"
    0

  • Did you find anything? I am having the same issue.

    Release 6 and 7 are not working on Ubuntu 18, Continuous release also not working and have the same error:

    QDir::exists: Empty or null file name
ERROR: Error: Could not find app-binary ""
    0
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