Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. could not find qtplatfom plugin eglfs
Forum Updated to NodeBB v4.3 + New Features

could not find qtplatfom plugin eglfs

Scheduled Pinned Locked Moved Unsolved General and Desktop
81 Posts 5 Posters 23.7k Views 2 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • K Offline
    K Offline
    Ketank16
    wrote on last edited by
    #9

    Even if you don't have the Qt folder on beaglebone at same location, you can export the following environment variables on BBB and be able to run your Qt application in it.

    export QT_QPA_PLATFORM_PLUGIN_PATH=/home/debian/(Qt folder name)/plugins/platforms
    export LD_LIBRARY_PATH="/home/debian/(Qt folder name)/lib":$LD_LIBRARY_PATH
    export QT_PLUGIN_PATH=/home/debian/(Qt folder name)/plugins
    export QT_QPA_FONTDIR=/home/debian/(Qt folder name)/lib/fonts
    

    Main thing you need to check is do you have eglfs as platform in the first place? Because I'm working on a BBB myself, and my application isn't in critical need of eglfs, but normally with BBB sysroot and linaro toolchain combo, you don't get eglfs working. You should check the path /home/debian/(Qt folder name)/plugins/platforms before using any app whether you have a library for eglfs there. If you do, then the commands above will point the Qt application to right folder and it will detect eglfs as platform plugin.

    A 2 Replies Last reply
    0
    • K Ketank16

      Even if you don't have the Qt folder on beaglebone at same location, you can export the following environment variables on BBB and be able to run your Qt application in it.

      export QT_QPA_PLATFORM_PLUGIN_PATH=/home/debian/(Qt folder name)/plugins/platforms
      export LD_LIBRARY_PATH="/home/debian/(Qt folder name)/lib":$LD_LIBRARY_PATH
      export QT_PLUGIN_PATH=/home/debian/(Qt folder name)/plugins
      export QT_QPA_FONTDIR=/home/debian/(Qt folder name)/lib/fonts
      

      Main thing you need to check is do you have eglfs as platform in the first place? Because I'm working on a BBB myself, and my application isn't in critical need of eglfs, but normally with BBB sysroot and linaro toolchain combo, you don't get eglfs working. You should check the path /home/debian/(Qt folder name)/plugins/platforms before using any app whether you have a library for eglfs there. If you do, then the commands above will point the Qt application to right folder and it will detect eglfs as platform plugin.

      A Offline
      A Offline
      Asha
      wrote on last edited by
      #10

      @Ketank16

      Hi,

      I have the platforms

      linuxfb, minimal, offscreen,and vnc,

      And exported platform also
      export_QT_QPA_PLATFORM=vnc(because i also have vnc)

      As you said I already export those things,which you mentioned,

      After that in .pro file added the line

      target.path=$$[Qt5ForBBB]/bin
      INSTALLS += target

      After this, running the application, getting the error

      rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1207) [sender=3.1.3]..

      exactly same error i got in BBB folder(means I followed your pdf document, same as you said i created one BBB directory, and gave the command rsync -avz debian@192.168.7.2:/usr sysroot ,in there also i got same error,but I continued next process as you mentioned in your pdf along with this error)

      how to solve this rsync error,please suggest me(even I am installed debian on external hard drive,and trying or following those steps in external hard drive,but while running this command rsync -avz debian@192.168.7.2:/usr sysroot,getting same error).

      how do I solve this error?

      1 Reply Last reply
      0
      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #11

        Why are you copying stuff in /usr ? The debian user likely doesn't have write access there.

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

        A 1 Reply Last reply
        0
        • SGaistS SGaist

          Why are you copying stuff in /usr ? The debian user likely doesn't have write access there.

          A Offline
          A Offline
          Asha
          wrote on last edited by
          #12

          @SGaist Hi,

          then where i need to copy?

          jsulmJ 1 Reply Last reply
          0
          • A Asha

            @SGaist Hi,

            then where i need to copy?

            jsulmJ Offline
            jsulmJ Offline
            jsulm
            Lifetime Qt Champion
            wrote on last edited by
            #13

            @Asha said in could not find qtplatfom plugin eglfs:

            then where i need to copy?

            Home directory of the user

            https://forum.qt.io/topic/113070/qt-code-of-conduct

            A 1 Reply Last reply
            0
            • jsulmJ jsulm

              @Asha said in could not find qtplatfom plugin eglfs:

              then where i need to copy?

              Home directory of the user

              A Offline
              A Offline
              Asha
              wrote on last edited by
              #14

              @jsulm

              rsync -avz debian@192.168.7.2:/usr sysroot

              Here,I am synchronizing the sysroot from board to computer,

              so,Home directory to the user means ,I need to give like this
              rsync -avz debian@192.168.7.2:/usr /home/beagle/BBB/sysroot

              OR

              rsync -avz debian@192.168.7.2:/usr /home/beagle

              jsulmJ 1 Reply Last reply
              0
              • A Asha

                @jsulm

                rsync -avz debian@192.168.7.2:/usr sysroot

                Here,I am synchronizing the sysroot from board to computer,

                so,Home directory to the user means ,I need to give like this
                rsync -avz debian@192.168.7.2:/usr /home/beagle/BBB/sysroot

                OR

                rsync -avz debian@192.168.7.2:/usr /home/beagle

                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #15

                @Asha said in could not find qtplatfom plugin eglfs:

                rsync -avz debian@192.168.7.2:/usr /home/beagle/BBB/sysroot
                OR
                rsync -avz debian@192.168.7.2:/usr /home/beagle

                Well, if you use /home/beagle you will pollute your home directory with the sysroot content, so use /home/beagle/BBB/sysroot ...

                https://forum.qt.io/topic/113070/qt-code-of-conduct

                A 1 Reply Last reply
                0
                • jsulmJ jsulm

                  @Asha said in could not find qtplatfom plugin eglfs:

                  rsync -avz debian@192.168.7.2:/usr /home/beagle/BBB/sysroot
                  OR
                  rsync -avz debian@192.168.7.2:/usr /home/beagle

                  Well, if you use /home/beagle you will pollute your home directory with the sysroot content, so use /home/beagle/BBB/sysroot ...

                  A Offline
                  A Offline
                  Asha
                  wrote on last edited by
                  #16

                  @jsulm Hi,

                  After giving this,getting the same error,there is no changes..

                  1 Reply Last reply
                  0
                  • K Ketank16

                    Even if you don't have the Qt folder on beaglebone at same location, you can export the following environment variables on BBB and be able to run your Qt application in it.

                    export QT_QPA_PLATFORM_PLUGIN_PATH=/home/debian/(Qt folder name)/plugins/platforms
                    export LD_LIBRARY_PATH="/home/debian/(Qt folder name)/lib":$LD_LIBRARY_PATH
                    export QT_PLUGIN_PATH=/home/debian/(Qt folder name)/plugins
                    export QT_QPA_FONTDIR=/home/debian/(Qt folder name)/lib/fonts
                    

                    Main thing you need to check is do you have eglfs as platform in the first place? Because I'm working on a BBB myself, and my application isn't in critical need of eglfs, but normally with BBB sysroot and linaro toolchain combo, you don't get eglfs working. You should check the path /home/debian/(Qt folder name)/plugins/platforms before using any app whether you have a library for eglfs there. If you do, then the commands above will point the Qt application to right folder and it will detect eglfs as platform plugin.

                    A Offline
                    A Offline
                    Asha
                    wrote on last edited by
                    #17

                    @Ketank16 Hi,

                    can you please show me the, any .pro file,

                    I am very confused with this target.path file..

                    I followed this..target.png

                    here is my .pro filetarget.pro.png

                    what i gave target.path, is it correct?

                    if its correct I am getting the error as shown in screenshot,

                    for that error solution ,I gave all the rights(rwx) to the /home/beagle/Qt5.13.1 directory then also getting the same error,any suggestions please....

                    1 Reply Last reply
                    0
                    • A Offline
                      A Offline
                      Asha
                      wrote on last edited by
                      #18

                      Hi,

                      Any ideas?

                      Pablo J. RoginaP 1 Reply Last reply
                      0
                      • A Asha

                        Hi,

                        Any ideas?

                        Pablo J. RoginaP Offline
                        Pablo J. RoginaP Offline
                        Pablo J. Rogina
                        wrote on last edited by
                        #19

                        @Asha I think the problem is the $$[Qt5] placeholder in the value for target.path variable in your .pro
                        what if you just make it simple as target.path=/home/beagle/Qt5.13.1

                        PS: please STOP pasting pictures and just paste TEXT so it's easier for others to reference your posts...

                        Upvote the answer(s) that helped you solve the issue
                        Use "Topic Tools" button to mark your post as Solved
                        Add screenshots via postimage.org
                        Don't ask support requests via chat/PM. Please use the forum so others can benefit from the solution in the future

                        A 1 Reply Last reply
                        1
                        • Pablo J. RoginaP Pablo J. Rogina

                          @Asha I think the problem is the $$[Qt5] placeholder in the value for target.path variable in your .pro
                          what if you just make it simple as target.path=/home/beagle/Qt5.13.1

                          PS: please STOP pasting pictures and just paste TEXT so it's easier for others to reference your posts...

                          A Offline
                          A Offline
                          Asha
                          wrote on last edited by
                          #20

                          @Pablo-J-Rogina

                          Good morning ,

                          Thanks for the replay,

                          After giving /home/beagle/Qt5.13.1 in my .pro file also getting the same problem...

                          Here is the compile output:

                          10:22:04: Running steps for project concentriccircles...
                          10:22:04: Configuration unchanged, skipping qmake step.
                          10:22:04: Starting: "/usr/bin/make" -j4
                          make: Nothing to be done for 'first'.
                          10:22:04: The process "/usr/bin/make" exited normally.
                          10:22:04: Connecting to device "Generic Linux Device" (192.168.7.2).
                          10:22:08: The remote file system has 49 megabytes of free space, going ahead.
                          10:22:08: Deploy step finished.
                          10:22:08: Trying to kill "/home/beagle/Qt5.13.1/concentriccircles" on remote device...
                          10:22:11: Remote application killed.
                          10:22:11: Deploy step finished.
                          10:22:11: Failed to create remote directories: mkdir: cannot create directory ‘/home/beagle’: Permission denied

                          10:22:11: Deploy step failed.
                          Error while building/deploying project concentriccircles (kit: BBB)
                          When executing step "Deploy files via rsync"
                          10:22:11: Elapsed time: 00:07.

                          jsulmJ 1 Reply Last reply
                          0
                          • A Asha

                            @Pablo-J-Rogina

                            Good morning ,

                            Thanks for the replay,

                            After giving /home/beagle/Qt5.13.1 in my .pro file also getting the same problem...

                            Here is the compile output:

                            10:22:04: Running steps for project concentriccircles...
                            10:22:04: Configuration unchanged, skipping qmake step.
                            10:22:04: Starting: "/usr/bin/make" -j4
                            make: Nothing to be done for 'first'.
                            10:22:04: The process "/usr/bin/make" exited normally.
                            10:22:04: Connecting to device "Generic Linux Device" (192.168.7.2).
                            10:22:08: The remote file system has 49 megabytes of free space, going ahead.
                            10:22:08: Deploy step finished.
                            10:22:08: Trying to kill "/home/beagle/Qt5.13.1/concentriccircles" on remote device...
                            10:22:11: Remote application killed.
                            10:22:11: Deploy step finished.
                            10:22:11: Failed to create remote directories: mkdir: cannot create directory ‘/home/beagle’: Permission denied

                            10:22:11: Deploy step failed.
                            Error while building/deploying project concentriccircles (kit: BBB)
                            When executing step "Deploy files via rsync"
                            10:22:11: Elapsed time: 00:07.

                            jsulmJ Offline
                            jsulmJ Offline
                            jsulm
                            Lifetime Qt Champion
                            wrote on last edited by
                            #21

                            @Asha Does /home/beagle directory exist on your device?

                            https://forum.qt.io/topic/113070/qt-code-of-conduct

                            A 1 Reply Last reply
                            0
                            • jsulmJ jsulm

                              @Asha Does /home/beagle directory exist on your device?

                              A Offline
                              A Offline
                              Asha
                              wrote on last edited by
                              #22

                              @jsulm

                              /home/beagle does not exit on my device,
                              I installed Qt in my laptop(location is: /home/beagle/Qt5.13.1)

                              I copied the cross compiled qt in my device(location is : /home/debian/Qt5),

                              one more thing,I want to tell

                              my user password is :1234

                              I am trying to connect ssh via root,but giving the password 1234 ,I am not able to connect with my board ,getting the permission denied error,

                              but giving the password "ims1" ,I am able to login via root,
                              where "ims1" is my old user password ,is this may cause any issues?

                              jsulmJ 1 Reply Last reply
                              0
                              • A Asha

                                @jsulm

                                /home/beagle does not exit on my device,
                                I installed Qt in my laptop(location is: /home/beagle/Qt5.13.1)

                                I copied the cross compiled qt in my device(location is : /home/debian/Qt5),

                                one more thing,I want to tell

                                my user password is :1234

                                I am trying to connect ssh via root,but giving the password 1234 ,I am not able to connect with my board ,getting the permission denied error,

                                but giving the password "ims1" ,I am able to login via root,
                                where "ims1" is my old user password ,is this may cause any issues?

                                jsulmJ Offline
                                jsulmJ Offline
                                jsulm
                                Lifetime Qt Champion
                                wrote on last edited by
                                #23

                                @Asha said in could not find qtplatfom plugin eglfs:

                                /home/beagle does not exit on my device

                                Well, that's the problem: only root has write access in /home.
                                Why do you use /home/beagle if your user is debian?!
                                Use /home/debian ...

                                https://forum.qt.io/topic/113070/qt-code-of-conduct

                                A 1 Reply Last reply
                                0
                                • jsulmJ jsulm

                                  @Asha said in could not find qtplatfom plugin eglfs:

                                  /home/beagle does not exit on my device

                                  Well, that's the problem: only root has write access in /home.
                                  Why do you use /home/beagle if your user is debian?!
                                  Use /home/debian ...

                                  A Offline
                                  A Offline
                                  Asha
                                  wrote on last edited by
                                  #24

                                  @jsulm

                                  while giving the /home/debian

                                  here is the compile output:
                                  11:13:06: Running steps for project concentriccircles...
                                  11:13:06: Configuration unchanged, skipping qmake step.
                                  11:13:06: Starting: "/usr/bin/make" -j4
                                  make: Nothing to be done for 'first'.
                                  11:13:06: The process "/usr/bin/make" exited normally.
                                  11:13:06: The remote file system has 46 megabytes of free space, going ahead.
                                  11:13:06: Deploy step finished.
                                  11:13:06: Trying to kill "/home/debian/Qt5/concentriccircles" on remote device...
                                  11:13:08: Remote application killed.
                                  11:13:08: Deploy step finished.
                                  11:13:08: sending incremental file list

                                  11:13:08:
                                  sent 72 bytes received 12 bytes 168.00 bytes/sec
                                  total size is 1,576,416 speedup is 18,766.86

                                  11:13:08: Deploy step finished.
                                  11:13:08: Elapsed time: 00:03.

                                  And

                                  Application output is:

                                  11:13:09: Starting /home/debian/Qt5/concentriccircles ...
                                  qt.qpa.plugin: Could not find the Qt platform plugin "eglfs" in ""
                                  This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

                                  Available platform plugins are: linuxfb, minimal, offscreen, vnc.

                                  11:13:09: Remote process crashed.

                                  jsulmJ 1 Reply Last reply
                                  0
                                  • A Asha

                                    @jsulm

                                    while giving the /home/debian

                                    here is the compile output:
                                    11:13:06: Running steps for project concentriccircles...
                                    11:13:06: Configuration unchanged, skipping qmake step.
                                    11:13:06: Starting: "/usr/bin/make" -j4
                                    make: Nothing to be done for 'first'.
                                    11:13:06: The process "/usr/bin/make" exited normally.
                                    11:13:06: The remote file system has 46 megabytes of free space, going ahead.
                                    11:13:06: Deploy step finished.
                                    11:13:06: Trying to kill "/home/debian/Qt5/concentriccircles" on remote device...
                                    11:13:08: Remote application killed.
                                    11:13:08: Deploy step finished.
                                    11:13:08: sending incremental file list

                                    11:13:08:
                                    sent 72 bytes received 12 bytes 168.00 bytes/sec
                                    total size is 1,576,416 speedup is 18,766.86

                                    11:13:08: Deploy step finished.
                                    11:13:08: Elapsed time: 00:03.

                                    And

                                    Application output is:

                                    11:13:09: Starting /home/debian/Qt5/concentriccircles ...
                                    qt.qpa.plugin: Could not find the Qt platform plugin "eglfs" in ""
                                    This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

                                    Available platform plugins are: linuxfb, minimal, offscreen, vnc.

                                    11:13:09: Remote process crashed.

                                    jsulmJ Offline
                                    jsulmJ Offline
                                    jsulm
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #25

                                    @Asha said in could not find qtplatfom plugin eglfs:

                                    linuxfb, minimal, offscreen, vnc

                                    Looks like you did not build eglfs support when building Qt

                                    https://forum.qt.io/topic/113070/qt-code-of-conduct

                                    A 1 Reply Last reply
                                    0
                                    • jsulmJ jsulm

                                      @Asha said in could not find qtplatfom plugin eglfs:

                                      linuxfb, minimal, offscreen, vnc

                                      Looks like you did not build eglfs support when building Qt

                                      A Offline
                                      A Offline
                                      Asha
                                      wrote on last edited by
                                      #26

                                      @jsulm
                                      but other platforms like linuxfb and vnc both are enabled while building qt,

                                      And I exported linuxfb in my device...

                                      one more ,while building I tried with -eglfs option also but got the error like

                                      ERROR: 'eglfs' already enabled...

                                      jsulmJ 1 Reply Last reply
                                      0
                                      • A Asha

                                        @jsulm
                                        but other platforms like linuxfb and vnc both are enabled while building qt,

                                        And I exported linuxfb in my device...

                                        one more ,while building I tried with -eglfs option also but got the error like

                                        ERROR: 'eglfs' already enabled...

                                        jsulmJ Offline
                                        jsulmJ Offline
                                        jsulm
                                        Lifetime Qt Champion
                                        wrote on last edited by
                                        #27

                                        @Asha What do you actually want to use? eglfs? linuxfb? ...?
                                        Adding -eglfs is not going to help as it is already activated, but your Qt build does not support it.

                                        https://forum.qt.io/topic/113070/qt-code-of-conduct

                                        A 1 Reply Last reply
                                        0
                                        • jsulmJ jsulm

                                          @Asha What do you actually want to use? eglfs? linuxfb? ...?
                                          Adding -eglfs is not going to help as it is already activated, but your Qt build does not support it.

                                          A Offline
                                          A Offline
                                          Asha
                                          wrote on last edited by
                                          #28

                                          @jsulm I just want to run one simple application in my device, by using anyone..

                                          jsulmJ 1 Reply Last reply
                                          0

                                          • Login

                                          • Login or register to search.
                                          • First post
                                            Last post
                                          0
                                          • Categories
                                          • Recent
                                          • Tags
                                          • Popular
                                          • Users
                                          • Groups
                                          • Search
                                          • Get Qt Extensions
                                          • Unsolved