So everything looks correct... How are you loading your image in your application ?

@hskoglund said in How to analyze a KIT environment variable: Hi, in a .cpp file you can use getenv(), like this: QString target = getenv("TARGET"); Or qEnvironmentVariable which returns a QString.

@jsulm Sorry for the late response. Thank you very much for very clear answer. It helps.

@sierdzio thanks for the example, I think the resolution type is a bit misleading with regard to the reason the bug was closed.

@aha_1980 Hi again! I created a bug report at https://bugreports.qt.io/browse/QTCREATORBUG-23295, lets hope that someone finds a fix. Thanks for your time!

@iman4k I don't know, I'm not a cross compile expert by any means. I'm just telling you want I can see from the configure you posted. Anyway, should be easy enough to add according to this https://doc.qt.io/qt-5/qtvirtualkeyboard-build.html you can simply open the qtvirtualkeyboard source project with QtCreator and compile it, using your cross compile kit

@jsulm Yep, absolutely, there is much to read/fiddle with, and may not be portable. May or may not work for OP's particular case. Anyway, whether this or your core dump suggestion (OP should look up how his target Linux OS handles core dumps allowed or not), he has a few approaches to consider now....

AFAIK, the BPI is very close to the Raspberry Pi, you should take a look at this wiki entry. By the way, why are you trying to build an outdated version of Qt ? The current LTS is the 5.9 series with 5.12 around the corner.

@SGaist Thanks for the reply. Indeed you are wright. It is very easy actually. I just compiled qt4.8.6 for my system. Then I found the sqlite project in sqldrivers. Compiled this library for my system, copied it and it works! Very easy. Learned again a lot! Thank you all for the great support!

Just case: the latest version of Qt 4 is Qt 4.8.7.

@Pablo-J.-Rogina Thanks for the time to make example code. It didn't work straight away, this because I use qt4.8 and you the newer one probably. So I changed your code to the older syntax to get it working. I would like to thank you and all others for there help! Again I learned a lot! Thanks for helping!

@TMJJ001 I would not run this software on your PC - how would it communicate over canbus? Instead you can provide the possibility to connect to this software (server) over network and then write client software for your PC which connects to your server software on the embedded device.

@jsulm Sorry for the late reply. There was an error in the .xml file and not in my code! So I managed to solve the error. Code works like a charm!

The solution to that problem is to insert the following call to the constructor of the file processing class: QTextCodec::setCodecForLocale(QTextCodec::codecForName("UTF-8")); Concerning the shell: I use BusyBox (its light) which doesn't provide locale and the environment variables like LANG=en_US.UTF-8. For compiling BusyBox configurations can or have to be given containing CONFIG_LAST_SUPPORTED_WCHAR=0 the number is the last displayable number of the Unicode list, 0 signifies that all characters shall be displayed, it was set to 767 which includes west European characters. The excluded characters are replaced by the character defined in the same configs, in my case it is "?".

Because QWS is Qt 4 only.

@deleted184 said in Qt5.9 VNC Support: Hi guys! According to the changelog of Qt5.8, vnc is back. I'm currently on Qt5.9 and i was able to launch my application with vnc enable like this: ./myQt59app -platform vnc:size=272x480 Via my VNC client everything works very well, however i have nothing displayed on the screen of my board :( . Do you have any idea on how to launch a qt5.9 application on a board and have a remote access via VNC ? I am using qt5.9 and i am able to start my qt application with vnc backend.However, when seeing from vncviewer or bnvc on android, i can only see a small part of my applicaiton( 1024x600 for my applicaiton , but on vnc client i can only see 1/4 part of the whole display). The following is my procedure: on my embedded linux server, run ./myQt59app -platform vnc:size=1024x600 in terminnal; on andriod ,using vnc viewer or bVNC to listen to ip address and port of my linux device. But both app can only see nearly 1/4 of the whole display. What is your procedure?Thanks!

@Antonio-Ortiz I am glad to see that you could solve your problem. The wildcard option is quite helpful, but also quite dangerous, if you are not very careful.

@Daniel-Nilsson did you get the solution to this?

@develop-it See my answer here: http://forum.qt.io/topic/68325/the-library-could-not-be-configured-for-supporting-multi-threaded-applications If you have another error while executing make then you should post it here, else it is not possible to help you.

To complete, i tried to configure the settings and i have the output of the cross compile who say me TERM environment variable not set. The cross compile is now standing something, but i don't know what because i've already set my TERM environnement → /usr/bin/xterm -e Thanks.

Having the same problem with a cross-compilation using the linary toolchain (aarch64-linux-gnu-) v6.2.1 error: 'EGLNativePixmapType' has not been declared Did you manage to find what the problem was?

Solved: Now I use wayland-egl and everything is fine. The Long Story to Get the Simple Solution: At first, I used raspberrypi-userland for OpenGL ES. However, it didn't work. I tried VC4 DRM driver in the next. I have struggled to get it work, and I opened an issue on the repository. Then anholt, the author of the driver, updated the Wiki. By following the Wiki, I finally succeeded in getting it work. mesa3d is necessary to provide OpenGL ES API, so I installed it with drm backend. However, it didn't work since eglCreatePbufferSurface is stubbed in the backend. So I had to use other QPA. Next, I tried X11 since Buildroot supports xcb backend, but neither did it work. I thought porting Wayland should be much easier than fixing the issue, and actually it is.

Hi, Isn't that the same question as you asked here ?

I am having this exact problem. I compiled my project for an embedded arm device, linux desktop, and windows desktop. The windows and linux hosts display the characters correctly, where the embedded device just shows nothing. I'm using the Noto fonts https://www.google.com/get/noto/#sans-hans and am positive it is being used on the linux desktop, since if I don't copy the font into the same directory as the application, it just shows blocks. When the font is in the directory, it shows everything properly. I tried the same thing with the embedded build, and nothing shows up. The font being loaded, since if it's not in the directory, it complains that it can't load it. Is there some extra switch or rendering tool/application that embedded linux needs? I've tried with both 'linuxfb' and 'egl' platforms with no success. Thanks in advance for any help.

Ok I see now, that when I configure with toolchain for armbcm from raspbian, it fails, but not because of the compiler ( make goes much further). I will search for another toolchain. I'm curious if the application made by such configured and built qtbase (with previously mentioned armbcm toolchain) will work on Banana. Now only I have to eliminate the problem with qt ide remote connection (error "Server sent invalid f"). If anybody knew how, it would be a blessing for me.

Good, then please mark the thread as solved using the "Topic Tool" button so other forum users may know a solution has been found :)

My log also include the message: This plugin does not support setParent! Please advise! IL

I am able to compile a Hello world cpp code and generated binary file is successfully running on my board.

@SGaist thank you for the fast reply. now I started to see the difference.

Hi May I ask how you got this to build? I am trying to compile Qt with the following configuration (for Raspberry Pi): ./configure --prefix=/usr -release -opensource -confirm-license -c++11 -no-largefile -no-qml-debug -system-zlib \ -no-journald -system-libpng -system-freetype -system-libjpeg -system-sqlite -openssl -no-pulseaudio -alsa \ -no-sql-db2 -no-sql-ibase -no-sql-mysql -no-sql-oci -no-sql-odbc -no-sql-psql -no-sql-sqlite2 -no-sql-tds -nomake examples -reduce-exports \ -no-directfb -no-linuxfb -eglfs -no-xcb -device linux-rasp-pi-g++ -device-option CROSS_COMPILE=/usr/bin/ -sysroot / Here is my patch: diff --git a/qtwebengine/tools/qmake/mkspecs/features/functions.prf b/qtwebengine/tools/qmake/mkspecs/features/functions.prf index ef0320d..5abaecc 100644 --- a/qtwebengine/tools/qmake/mkspecs/features/functions.prf +++ b/qtwebengine/tools/qmake/mkspecs/features/functions.prf @@ -12,13 +12,9 @@ defineTest(isPlatformSupported) { return(false) } - linux-g++*:!isGCCVersionSupported(): return(false) - !isPythonVersionSupported(): return(false) - linux-g++*|win32-msvc2013|macx-clang: return(true) boot2qt: return(true) - skipBuild("Qt WebEngine can currently only be built for Linux (GCC), Windows (MSVC 2013), OS X (XCode 5.1+) or Qt for Device Creation.") - return(false) + return(true) } defineTest(isPythonVersionSupported) { -- 2.1.0 And it succeeds, but I don't get a message about WebEngine being an unsupported platform. It simply does not build that module. I tried to follow this reference here, but had no luck either: https://forum.qt.io/topic/48223/webengine-raspberry-pi/2 I am building native, not cross, on Debian Jessie. Thanks in advance, Sam

Or use QMapControl and customize it :) , Qt mobility and merbal both are sound fine to me thanks guys I will read more about them ...

Its ugly workaround, but can helps. Open your <EGL/eglplatform.h> in text editor and after strings: #include <X11/Xlib.h> #include <X11/Xutil.h> add following strings: #undef None #undef CursorShape