Installation QT 5.11 on Raspberry Pi 3

[jsulm]

@gogoer Please show you compiler configuration in "Compiler" tab.

[gogoer]

here it:

[jsulm]

@gogoer If you copy/past the path to compiler into a terminal: does it start/run?

[gogoer]

yes, in terminal this path works good!

[gogoer]

maybe i need to use another compiler? why this dont work?

[gogoer]

here is the output:

16:24:47: Выполняются этапы для проекта 111...
16:24:47: Запускается: «/opt/qt5pi/sysroot/usr/local/qt5pi/bin/qmake» /home/pasha/111/111.pro -spec devices/linux-rasp-pi3-g++ CONFIG+=debug CONFIG+=qml_debug
Project ERROR: Cannot run target compiler 'arm-linux-gnueabihf-g++'. Output:
===================
Using built-in specs.
COLLECT_GCC=arm-linux-gnueabihf-g++
Target: arm-linux-gnueabihf
Configured with: /cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/.build/src/gcc-linaro-4.8-2014.01/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu --target=arm-linux-gnueabihf --prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/install --with-sysroot=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/install/arm-linux-gnueabihf/libc --enable-languages=c,c++,fortran --disable-multilib --enable-multiarch --with-arch=armv6 --with-tune=arm1176jz-s --with-fpu=vfp --with-float=hard --with-pkgversion='crosstool-NG linaro-1.13.1-4.8-2014.01 - Linaro GCC 2013.11' --with-bugurl=https://bugs.launchpad.net/gcc-linaro --enable-__cxa_atexit --enable-libmudflap --enable-libgomp --enable-libssp --with-gmp=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --with-mpfr=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --with-mpc=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --with-isl=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --with-cloog=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --with-libelf=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --enable-threads=posix --disable-libstdcxx-pch --enable-linker-build-id --enable-plugin --enable-gold --with-local-prefix=/cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-raspbian-linux/install/arm-linux-gnueabihf/libc --enable-c99 --enable-long-long --with-float=hard
Thread model: posix
gcc version 4.8.3 20140106 (prerelease) (crosstool-NG linaro-1.13.1-4.8-2014.01 - Linaro GCC 2013.11) 
COLLECT_GCC_OPTIONS='-march=armv8-a' '-mtune=cortex-a53' '-mfpu=crypto-neon-fp-armv8' '-mfloat-abi=hard' '-E' '-v' '-shared-libgcc' '-mtls-dialect=gnu'
 /opt/qt5pi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/../libexec/gcc/arm-linux-gnueabihf/4.8.3/cc1plus -E -quiet -v -imultilib . -imultiarch arm-linux-gnueabihf -iprefix /opt/qt5pi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/../lib/gcc/arm-linux-gnueabihf/4.8.3/ -isysroot /opt/qt5pi/sysroot -D_GNU_SOURCE - -march=armv8-a -mtune=cortex-a53 -mfpu=crypto-neon-fp-armv8 -mfloat-abi=hard -mtls-dialect=gnu
/opt/qt5pi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian/bin/../libexec/gcc/arm-linux-gnueabihf/4.8.3/cc1plus: error while loading shared libraries: libz.so.1: cannot open shared object file: No such file or directory
===================
Maybe you forgot to setup the environment?
16:24:47: Процесс «/opt/qt5pi/sysroot/usr/local/qt5pi/bin/qmake» завершился с кодом 3.
Ошибка при сборке/установке проекта 111 (комплект: Raspberry)
Во время выполнения этапа «qmake»
16:24:47: Прошло времени: 00:00.

my path to qmake: ```
/opt/qt5pi/sysroot/usr/local/qt5pi/bin/qmake

is it ok?

[jsulm]

@gogoer said in Installation QT 5.11 on Raspberry Pi 3:

libz.so.1: cannot open shared object file: No such file or directory

Where is your sysroot and does it contain libz.so.1?

[gogoer]

thank you!!!!
i make:

sudo apt-get install zlib1g:i386

and it go on!!

[gogoer]

I compiled my project and copy executable file to RPI.
But when I execute it, i have error

*failed to add service - already in use?

it crashes on function

QGuiApplication app(argc, argv);

and one more question: i create and install qt5.10 on ubuntu, what i need to do to update qt version on RPI? as i understand it still uses old version.

[jsulm]

@gogoer I don't know what "service" is mentioned in the error.
"install qt5.10 on ubuntu, what i need to do to update qt version on RPI" - do you mean you cross-compiled Qt 5.10 on your Ubuntu machine? If so you can copy the libs to the same location or RPi you defined using -prefix parameter.

[gogoer]

yes, i cross-compile on ubuntu. what directory i need to copy to RPI? and what is -prefix parameter?

[gogoer]

i created blank QTQuick application and compile it.
when i start it on RPI have error:

QML debugging is enabled. Only use this in a safe environment.
* failed to add service - already in use?

one more question:
where i can configure path to copy on RPI? now after pressing Run button executable file copies to /opt/ directory on ubuntu. i want to change it, but cant find where to do this.

[jsulm]

@gogoer Come on, you're already using -prefix parameter:
"../qt-everywhere-src-5.11.2/configure -v -opengl es2 -eglfs -no-gtk -device linux-rasp-pi-g++
-opensource -confirm-license -reduce-exports
-force-pkg-config -nomake examples -no-compile-examples -release
-qt-pcre -ssl -evdev -system-freetype -fontconfig -glib -prefix /opt/qt5"

So, you should copy Qt to /opt/qt5

[gogoer]

i compiled all by this manual: http://ulasdikme.com/projects/raspberry/Qt_for_raspberrypi.php
i used:

../qt-everywhere-src-5.10.1/configure -opengl es2 -device linux-rasp-pi3-g++ -device-option CROSS_COMPILE=arm-linux-gnueabihf- -sysroot /opt/qt5pi/sysroot -prefix /usr/local/qt5pi -opensource -confirm-license -skip qtscript -nomake examples -make libs -pkg-config -no-use-gold-linker -v

i have qt libs on /usr/local/qt5pi on my RPI.

if i compile project on PRI natively and run it works.
but if i compile same project on ubuntu and copy executable file to RPI it gives error:

* failed to add service - already in use?

maybe i need to copy something else?

[ambershark]

@gogoer What service is it talking about? What is your application actually trying to do? Maybe cut it down to a helloworld app to test with and make sure Qt is working properly. Or at least add logging to your application so you can see at what point it comes up with that error.

Also you can try running strace on your exe to see what it is trying to do when it fails. Sometimes that will give you some insight.

I've never seen that error from Qt. And I've used it for like 18 years now.

Edit: Ah this makes sense now ... it's a Pi thing.

https://www.raspberrypi.org/forums/viewtopic.php?t=12581

That's an old topic but it should give you some ideas.. Seems to have to do with memory.

[gogoer]

@ambershark said in Installation QT 5.11 on Raspberry Pi 3:

What service is it talking about? What is your application actually trying to do? Maybe cut it down to a helloworld app to test with and make sure Qt is working properly.

I created a blank QTQuick project with only HelloWorld window and it gives such error, when i start it. Error crashes on

QGuiApplication app(argc, argv);

function.

But if i create or compile project on RPI (it uses QT5.3 and QTCreator1.2.3) everything works well.

[ambershark]

What does ldd <yourexe> show (the exe you loaded on the Pi)? I wonder if you're missing a library or it's mixing Qt versions on the Pi and the ones you loaded.

[gogoer]

pi@raspberrypi:/opt/untitled/bin $ ./untitled 
QML debugging is enabled. Only use this in a safe environment.
* failed to add service - already in use?
pi@raspberrypi:/opt/untitled/bin $ ldd untitled 
	linux-vdso.so.1 (0x7ee46000)
	/usr/lib/arm-linux-gnueabihf/libarmmem.so (0x76f45000)
	libQt5Quick.so.5 => /usr/local/qt5pi/lib/libQt5Quick.so.5 (0x76bbb000)
	libQt5Gui.so.5 => /usr/local/qt5pi/lib/libQt5Gui.so.5 (0x76706000)
	libQt5Qml.so.5 => /usr/local/qt5pi/lib/libQt5Qml.so.5 (0x7636e000)
	libQt5Network.so.5 => /usr/local/qt5pi/lib/libQt5Network.so.5 (0x76200000)
	libQt5Core.so.5 => /usr/local/qt5pi/lib/libQt5Core.so.5 (0x75cb6000)
	libGLESv2.so => /opt/vc/lib/libGLESv2.so (0x75c74000)
	libpthread.so.0 => /lib/arm-linux-gnueabihf/libpthread.so.0 (0x75c4c000)
	libstdc++.so.6 => /usr/lib/arm-linux-gnueabihf/libstdc++.so.6 (0x75b70000)
	libm.so.6 => /lib/arm-linux-gnueabihf/libm.so.6 (0x75af5000)
	libgcc_s.so.1 => /lib/arm-linux-gnueabihf/libgcc_s.so.1 (0x75ac8000)
	libc.so.6 => /lib/arm-linux-gnueabihf/libc.so.6 (0x75987000)
	libpng12.so.0 => /lib/arm-linux-gnueabihf/libpng12.so.0 (0x75957000)
	libz.so.1 => /lib/arm-linux-gnueabihf/libz.so.1 (0x75930000)
	librt.so.1 => /lib/arm-linux-gnueabihf/librt.so.1 (0x75919000)
	libdl.so.2 => /lib/arm-linux-gnueabihf/libdl.so.2 (0x75906000)
	libgthread-2.0.so.0 => /usr/lib/arm-linux-gnueabihf/libgthread-2.0.so.0 (0x758f4000)
	libglib-2.0.so.0 => /lib/arm-linux-gnueabihf/libglib-2.0.so.0 (0x757f1000)
	/lib/ld-linux-armhf.so.3 (0x76f5a000)
	libEGL.so => /opt/vc/lib/libEGL.so (0x757b8000)
	libbcm_host.so => /opt/vc/lib/libbcm_host.so (0x75791000)
	libvchiq_arm.so => /opt/vc/lib/libvchiq_arm.so (0x7577b000)
	libvcos.so => /opt/vc/lib/libvcos.so (0x75761000)
	libpcre.so.3 => /lib/arm-linux-gnueabihf/libpcre.so.3 (0x756ee000)

[ambershark]

@gogoer All that looks ok. Figured you would have mixed libraries. You can dig deeper by running ldd on each Qt lib but I don't think it will show what i was expecting.

Can you run it in a gdb and dig into the part of the code that is causing that failure? I know you said it was in QApplication but can you provide any more information? If not I don't have any more ideas ... it seems like it was compiled or installed incorrectly on the Pi but I don't know why.

[gogoer]

thank you very much for help.
i reinstalled ubuntu and Raspbian and everything compiles well.
now when i try to start application on RPI i have next error:

Unable to query physical screen size, defaulting to 100 dpi.
To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).
QQmlApplicationEngine failed to load component
qrc:/main.qml:1 module "QtQuick" is not installed
qrc:/main.qml:2 module "QtQuick.Controls" is not installed
qrc:/main.qml:1 module "QtQuick" is not installed
qrc:/main.qml:2 module "QtQuick.Controls" is not installed

i inderstand that it cant find some libs but dont know where to fix this.