Could not find the Qt platform plugin "eglfs" in ""

kutluyigitturk

@SGaist Yes, I did.

SGaist

Then you should check the test logs to see exactly what failed with them.

kutluyigitturk

@SGaist I've already uploaded here what's failing.

After running the export QT_DEBUG_PLUGINS=1 command, I run the ./OrangeDemoQml command again and add the output below again.

Please let me know if you can't help...

QFactoryLoader::QFactoryLoader() checking directory path "/usr/local/qt5opi/plugins/platforms" ...
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5opi/plugins/platforms/libqlinuxfb.so"
Found metadata in lib /usr/local/qt5opi/plugins/platforms/libqlinuxfb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "linuxfb"
        ]
    },
    "archreq": 0,
    "className": "QLinuxFbIntegrationPlugin",
    "debug": false,
    "version": 330752
}


Got keys from plugin meta data ("linuxfb")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5opi/plugins/platforms/libqminimal.so"
Found metadata in lib /usr/local/qt5opi/plugins/platforms/libqminimal.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "minimal"
        ]
    },
    "archreq": 0,
    "className": "QMinimalIntegrationPlugin",
    "debug": false,
    "version": 330752
}


Got keys from plugin meta data ("minimal")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5opi/plugins/platforms/libqoffscreen.so"
Found metadata in lib /usr/local/qt5opi/plugins/platforms/libqoffscreen.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "offscreen"
        ]
    },
    "archreq": 0,
    "className": "QOffscreenIntegrationPlugin",
    "debug": false,
    "version": 330752
}


Got keys from plugin meta data ("offscreen")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5opi/plugins/platforms/libqvnc.so"
Found metadata in lib /usr/local/qt5opi/plugins/platforms/libqvnc.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "vnc"
        ]
    },
    "archreq": 0,
    "className": "QVncIntegrationPlugin",
    "debug": false,
    "version": 330752
}


Got keys from plugin meta data ("vnc")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5opi/plugins/platforms/libqwebgl.so"
Found metadata in lib /usr/local/qt5opi/plugins/platforms/libqwebgl.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "webgl"
        ]
    },
    "archreq": 0,
    "className": "QWebGLIntegrationPlugin",
    "debug": false,
    "version": 330752
}


Got keys from plugin meta data ("webgl")
QFactoryLoader::QFactoryLoader() looking at "/usr/local/qt5opi/plugins/platforms/libqxcb.so"
Found metadata in lib /usr/local/qt5opi/plugins/platforms/libqxcb.so, metadata=
{
    "IID": "org.qt-project.Qt.QPA.QPlatformIntegrationFactoryInterface.5.3",
    "MetaData": {
        "Keys": [
            "xcb"
        ]
    },
    "archreq": 0,
    "className": "QXcbIntegrationPlugin",
    "debug": false,
    "version": 330752
}


Got keys from plugin meta data ("xcb")
QFactoryLoader::QFactoryLoader() checking directory path "/home/opi/platforms" ...
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, webgl, xcb.

Aborted

SGaist

What I meant is to take a look at the tests that have been run during the Qt configure step to see why they failed.

kutluyigitturk

@SGaist Let's throw everything to the wind.

The following point caught my attention in the configuration summary.

QPA backends:
  DirectFB ............................... no
  EGLFS .................................. no
  LinuxFB ................................ yes
  VNC .................................... yes
  Mir client ............................. no

If I don't get it wrong, the 'EGLFS ................................................ no' part tells us that EGLFS was not installed. How can I follow a path to install it?

JKSH

@kutluyigitturk said in Could not find the Qt platform plugin "eglfs" in "":

@SGaist Let's throw everything to the wind.

The following point caught my attention in the configuration summary.
QPA backends:
  DirectFB ............................... no
  EGLFS .................................. no
  LinuxFB ................................ yes
  VNC .................................... yes
  Mir client ............................. no
If I don't get it wrong, the 'EGLFS ................................................ no' part tells us that EGLFS was not installed. How can I follow a path to install it?

Good work with finding the relevant items in the configure summary!

There are other EGL-related items in your log:

Qt Gui:
  EGL .................................... no

Features used by QPA backends:
  X11 specific:
    EGL on X11 ........................... no

QPA backends:
  EGLFS .................................. no
  XCB:
    GL integrations:
      GLX Plugin ......................... no
      EGL-X11 Plugin ..................... no

Anyway, see item #14 at https://wiki.qt.io/RaspberryPi2EGLFS

kutluyigitturk

@JKSH I looked at the link you mentioned and tried to implement it. But in step 13 echo /usr/local/qt5pi/lib | sudo tee /etc/ld.so.conf.d/qt5pi.conf , I don't have a file named qt5pi.conf or qt5opi.conf. Could I be unable to reach the point I want because of this?

By the way, I'm already doing the process in steps 14 during the installation.

I'm trying to find where I went wrong. I think it will take a very long time. :/

JKSH

@kutluyigitturk said in Could not find the Qt platform plugin "eglfs" in "":

But in step 13 echo /usr/local/qt5pi/lib | sudo tee /etc/ld.so.conf.d/qt5pi.conf , I don't have a file named qt5pi.conf or qt5opi.conf.

The tee command creates a file. The command above writes the string "/usr/local/qt5pi/lib" into a file called qt5pi.conf.

By the way, I'm already doing the process in steps 14 during the installation.

I'm trying to find where I went wrong. I think it will take a very long time. :/

It can be tricky, I know.

Take a step back: Don't worry about Qt first; make sure the EGL libraries are working on your device.

According to https://github.com/matusnovak/rpi-opengl-without-x you should have libbrcmEGL.so (or libEGL.so) and libbrcmGLESv2.so in /opt/vc/lib. Are the libraries there there? Do the triangle examples work on your device?

kutluyigitturk

@JKSH said in Could not find the Qt platform plugin "eglfs" in "":

@kutluyigitturk said in Could not find the Qt platform plugin "eglfs" in "":

But in step 13 echo /usr/local/qt5pi/lib | sudo tee /etc/ld.so.conf.d/qt5pi.conf , I don't have a file named qt5pi.conf or qt5opi.conf.

The tee command creates a file. The command above writes the string "/usr/local/qt5pi/lib" into a file called qt5pi.conf.

Good of you to say, I didn't know this worked. I ran this command and got no errors.

By the way, I'm already doing the process in steps 14 during the installation.

I'm trying to find where I went wrong. I think it will take a very long time. :/

It can be tricky, I know.

Take a step back: Don't worry about Qt first; make sure the EGL libraries are working on your device.

According to https://github.com/matusnovak/rpi-opengl-without-x you should have libbrcmEGL.so (or libEGL.so) and libbrcmGLESv2.so in /opt/vc/lib. Are the libraries there there? Do the triangle examples work on your device?

First of all, there is no /opt/vc/lib directory on Orange Pi. I created this myself and downloaded the necessary links via the 'https://github.com/raspberrypi/firmware/tree/master/opt/vc/lib' link. Then I flashed this lib folder and put it on Orange Pi. Then I copied the .so files to the required directory with the cp -r command.

Could doing it this way cause any problems?

I downloaded the file from the link 'https://github.com/matusnovak/rpi-opengl-without-x' back to a flash drive. I saved the 5 files in it in a folder named example on the desktop. When I run gcc -o triangle triangle.o -lbrcmEGL -lbrcmGLESv2 -L/opt/vc/lib I get the following error.

root@orangepione:/home/opi/Desktop/example# gcc -o triangle triangle.o -lbrcmEGL -lbrcmGLESv2 -L/opt/vc/lib
/usr/bin/ld: warning: libbcm_host.so, needed by /opt/vc/lib/libbrcmEGL.so, not found (try using -rpath or -rpath-link)
/usr/bin/ld: warning: libvchiq_arm.so, needed by /opt/vc/lib/libbrcmEGL.so, not found (try using -rpath or -rpath-link)
/usr/bin/ld: warning: libvcos.so, needed by /opt/vc/lib/libbrcmEGL.so, not found (try using -rpath or -rpath-link)
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_log_impl'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_generic_mem_free'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vc_dispmanx_display_get_info'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vchiq_connect'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_generic_reentrant_mutex_lock'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_thread_at_exit'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vchiq_initialise'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_generic_reentrant_mutex_delete'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vchiq_release_message'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vchiq_get_client_id'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vc_dispmanx_element_add'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_generic_reentrant_mutex_unlock'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vchiq_queue_message'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vchiu_queue_init'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_snprintf'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vchiu_queue_push'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_named_semaphore_delete'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_log_register'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_generic_mem_alloc'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vc_dispmanx_display_open'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vc_dispmanx_update_start'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_pthreads_map_errno'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_generic_reentrant_mutex_create'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vchiq_queue_bulk_receive'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vchiq_queue_bulk_transmit'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_generic_named_semaphore_create'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vchiq_open_service'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vcos_log_unregister'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vchiu_queue_pop'
/usr/bin/ld: /opt/vc/lib/libbrcmEGL.so: undefined reference to `vc_dispmanx_update_submit_sync'
collect2: error: ld returned 1 exit status

kutluyigitturk

@JKSH @SGaist Hello again, I'm back with another thought.

As in Raspberry Pi, /opt/vc/lib directory does not occur between Orange Pi directories. I created this directory manually in Orange Pi. I am also copying the files in the directory from the /opt/vc/lib folder within the Raspberry Pi ecosystem to a Flash Drive.

cp -rL /opt/vc/lib /media/pi/SANDISK

Then I insert this memory into Orange Pi and copy it to the /opt/vc/lib directory I created in the Orange Pi ecosystem.

cp -r /media/pi/SANDISK /opt/vc

But between two different directories, different views emerge as I added in the photo below. The libGLESv1_CM.so file I show with the red frame looks different between directories.

Could my process be incorrect? How accurate is it to copy like this? This is where my error most likely stems from.

bumankumar3

@kutluyigitturk I have the same issue. Any tips for solution?

teatv apk
spice money

JKSH

@kutluyigitturk said in Could not find the Qt platform plugin "eglfs" in "":

First of all, there is no /opt/vc/lib directory on Orange Pi. I created this myself and downloaded the necessary links via the 'https://github.com/raspberrypi/firmware/tree/master/opt/vc/lib' link. Then I flashed this lib folder and put it on Orange Pi. Then I copied the .so files to the required directory with the cp -r command.

Could doing it this way cause any problems?

Are you sure that the *.so versions at https://github.com/raspberrypi/firmware/tree/master/opt/vc/lib are compatible with the rest of your system?

/usr/bin/ld: warning: libbcm_host.so, needed by /opt/vc/lib/libbrcmEGL.so, not found (try using -rpath or -rpath-link)

You have missing dependencies. You need to find libbcm_host.so, like the message said.

But between two different directories, different views emerge as I added in the photo below. The libGLESv1_CM.so file I show with the red frame looks different between directories.

It looks like you have lost a symbolic link. Call ls -l to see the differences more clearly.

When I copy files that include symbolic links, I use cp -a.

Anyway, your issues are not Qt-related. I don't have experience with setting up a Raspberry Pi, so I'm not sure how much I can help you.

I suggest you seek help at a Raspberry Pi forum first. Make sure that you can run the examples at https://github.com/matusnovak/rpi-opengl-without-x first.

After that, you can try building Qt and the EGLFS plugin again.

Good luck.

kutluyigitturk

@JKSH Thank you for your help.

kutluyigitturk

@bumankumar3 I'll let you know if I can fix the problem.