I built Qt Everywhere for beaglebone black (OS Debian) but fail, somebody used to built it success can help me?

jsulm

@Dang-Vu Did you install these packages on your Debian target device?
It doesn't matter at all what you install on your Ubuntu host PC as you want to cross compile for your Debian target device.
So please make sure you have those packages on your target device!
You need to understand how cross compilation works: you need libraries for your target device not your host build machine. You cannot use your Ubuntu x86 libraries on your ARM Debian device.
libgles2-mesa-dev - this one should be OpenGLES

jsulm

@Dang-Vu Also in your configure line I cannot find -sysroot parameter which should point to your sysroot. See http://doc.qt.io/qt-5.7/configure-options.html
"Note: Toolchains for non-desktop targets often come with a so-called sysroot which Qt needs to be configured against."

http://doc.qt.io/qt-5.7/embedded-linux.html#configuring-a-specific-device
"Building Qt for a given device requires a toolchain and a sysroot."
"The most important parameters are -device and -sysroot. By specifying -sysroot, the include files and libraries used by configure's feature detection tests, as well as Qt itself, is taken from the specified location, instead of the host PC's standard locations."

Dang Vu

@jsulm said in i built qt-everywhere for beaglebone black( OS Debian) but fail, somebody used to built it success can help me?:

Also in your configure line I cannot find -sysroot parameter which should point to your sysroot. See http://doc.qt.io/qt-5.7/configure-options.html
"Note: Toolchains for non-desktop targets often come with a so-called sysroot which Qt needs to be configured against."
http://doc.qt.io/qt-5.7/embedded-linux.html#configuring-a-specific-device
"Building Qt for a given device requires a toolchain and a sysroot."
"The most important parameters are -device and -sysroot. By specifying -sysroot, the include files and libraries used by configure's feature detection tests, as well as Qt itself, is taken from the specified location, instead of the host PC's standard locations."

it's mean i must connect beagle bone device to host computer while built? i don't understand about sysroot! sir! i read some document tell about: " -sysroot /pathtothe/rootfs" but i don't know what it's! Sir!

./configure -v -opensource -confirm-license -qt-xcb -no-xinput2 -no-tslib -nomake examples -nomake tests -sysroot /pathtothe/rootfs -prefix /path_to_install/bbb-qt-5.5.1 -xplatform linux-linaro-gnueabihf-g++ -device linux-beagleboard-g++ -device-option CROSS_COMPILE=/usr/bin/arm-linux-gnueabihf-

jsulm

@Dang-Vu Basically a sysroot is the file system (or part of it) of your target device. You need a sysrott because it contains needed libraries and header files for your target device. There are several possibilities to get a sysroot:

Sometimes the vendor provides a SDK which contains a sysroot
You can connect the SDCard, hard drive, or what ever storage your device uses, to your host PC
You can use NFS to mount the root file system of your target device over network (I do this with my RaspberryPi)

I don't know which option is the best one for you. If you use a SDCard in your target device then you can just put that SDCard into your PC, mount it somewhere (for example in /media/sdcard) and use that directory as sysroot:

-sysroot /media/sdcard

[edit: Fixed network mount type name SGaist]

Dang Vu

@jsulm, the Firts thank you for reply me! it's my honor! about your disposal, i understand like: i need a connect SD card contain a BBB-eMMC-flasher-debian-8.2-lxqt-2gb-armhf-2015-11-29-2gb.img ( curentl version my beagle use, in picture alt text ) and mount it( /media/ngocvu/rootfs) , after i configure QT below:

./configure -v -opensource -confirm-license -prefix /usr/local/qt-5.7 -no-largefile -no-accessibility -sysroot /media/ngocvu/rootfs -opengl es2 -eglfs -qt-zlib -no-gif -qt-libpng -qt-libjpeg -no-nis -skip qtpurchasing -skip qtcanvas3d -no-cups -xplatform linux-linaro-gnueabihf-g++ -device linux-beagleboard-g++ -device-option CROSS_COMPILE=arm-linux-gnueabihf-

but it's not work, old error:

checking for OpenGL ES 2.0... 
arm-linux-gnueabihf-g++ -c -pipe -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mthumb -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mthumb -mfloat-abi=hard --sysroot=/media/ngocvu/rootfs -O2 -O3 -Wall -W -fPIC  -I. -I../../../mkspecs/devices/linux-beagleboard-g++ -o opengles2.o opengles2.cpp
opengles2.cpp:43:25: fatal error: GLES2/gl2.h: No such file or directory
compilation terminated.
Makefile:192: recipe for target 'opengles2.o' failed
make: *** [opengles2.o] Error 1
OpenGL ES 2.0 disabled.
The OpenGL ES 2.0 functionality test failed!
 You might need to modify the include and library search paths by editing
 QMAKE_INCDIR_OPENGL_ES2, QMAKE_LIBDIR_OPENGL_ES2 and QMAKE_LIBS_OPENGL_ES2 in
 /home/ngocvu/Downloads/qt-everywhere-opensource-src-5.7.0/qtbase/mkspecs/devices/linux-beagleboard-g++.

i wrong step?!!

jsulm

@Dang-Vu You need a sysroot with installed OpenGL ES packages. So, you should NOT use the *.img file, because it does not yet contain those packages. Instead you boot your device, log on on it and install needed packages (apt-get install libgles2-mesa-dev). Then you shut down the device, put the SDCard in your PC and try again.

Dang Vu

@jsulm said in i built qt-everywhere for beaglebone black( OS Debian) but fail, somebody used to built it success can help me?:

You need a sysroot with installed OpenGL ES packages. So, you should NOT use the *.img file, because it does not yet contain those packages. Instead you boot your device, log on on it and install needed packages (apt-get install libgles2-mesa-dev). Then you shut down the device, put the SDCard in your PC and try again.

i think it possible Sir? because my beaglebone can install debian from SD card into Flash memory of beaglebone, after it can work without SD card! but i will try again! P/s: my SD card contain a file extracted( i use Disk Image to write data from debian.img to Sd card) ! i usually use it't for install OS for Beaglebone!

jsulm

@Dang-Vu Such image files usually do not contain everything. I'm quite sure the image file does not contain OpenGL ES header files.
An easier solution is to mount the root file system of your target device on your PC via NFS, see https://wiki.ubuntuusers.de/NFS/
Ubuntu and Debian are very similar, so you can do it as described there.

Dang Vu

@jsulm Dear Sir, i try but i have a problem with -sysroot! when i have a path -sysroot /media/ngocvu/rootfs ( i compress a rootfs in https://docs.google.com/uc?id=0BxlMhouhD6_YSmFlaExyVHJUTlU&export=download , full opengl, gcc,g++, linaro toolchains you can download and see it)

checking for C++11... 
arm-linux-gnueabihf-g++ -c -pipe -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mthumb -march=armv7-a -mtune=cortex-a8 -mfpu=neon -mthumb -mfloat-abi=hard --sysroot=/usr/bin/ -O2 -O3 -std=gnu++11 -Wall -W -fPIC  -I. -I../../../mkspecs/devices/linux-beagleboard-g++ -o c++11.o c++11.cpp
c++11.cpp:46:19: fatal error: utility: No such file or directory
 #include <utility>
                   ^
compilation terminated.
make: *** [c++11.o] Error 1
C++11 disabled.
ERROR: Qt requires a C++11 compiler and yours does not seem to be that.
Please upgrade.

if don't have -sysroot /media/ngocvu/rootfs , configure will good work!
i don't understand that error! i was installed g++ version g++ (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4

jsulm

This post is deleted!

jsulm

@Dang-Vu Can you please post the output of

arm-linux-gnueabihf-g++ --version

?
How did you call configure?
What is inside /media/ngocvu/rootfs ?

Dang Vu

@jsulm ouput g++ version:

arm-linux-gnueabihf-g++ (Ubuntu/Linaro 4.8.4-2ubuntu1~14.04.1) 4.8.4
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE

.my configure

./configure -v -opensource -confirm-license -prefix /usr/local/qt-5.7 -no-largefile -no-accessibility -sysroot /media/ngocvu/rootfs -opengl es2 -eglfs -qt-zlib -no-gif -qt-libpng -qt-libjpeg -no-nis -skip qtpurchasing -skip qtcanvas3d -no-cups -xplatform linux-linaro-gnueabihf-g++ -device linux-beagleboard-g++ -device-option CROSS_COMPILE=arm-linux-gnueabihf-

in inside the /media/ngocvu/rootfs is debian image, ecxactly is a "/" of OS debian run in SD card! without SD card it cannot run!) and i upload it folder to google drive! it's link https://docs.google.com/uc?id=0BxlMhouhD6_YSmFlaExyVHJUTlU&export=download

jsulm

@Dang-Vu Can you execute

find /media/ngocvu/rootfs -name utility

and post the output?
You probably did not install needed dev packages on your target, so header files like "utility" are missing.

Dang Vu

@jsulm my output find /media/ngocvu/rootfs -name utility, Sir!

./opt/source/Userspace-Arduino/utility
./usr/include/c++/4.9/tr1/utility
./usr/include/c++/4.9/utility

jsulm

@Dang-Vu That line is wrong:

--sysroot=/usr/bin

it tells the compiler to look in /usr/bin/include for header files which is wrong.
I don't know why this parameter is passed to the compiler. Maybe it comes from your previous attempts to cross-compile?
Do you call configure script from the directory where Qt source code is located?
If so then please extract Qt sources again and call configure from another directory to do a clean "out of source build".

Dang Vu

This post is deleted!

Dang Vu

@jsulm i passed a -sysroot a successed! i was basic a tutorial in the link https://wiki.qt.io/BeagleBone_Black_Beginners_Guide
but i have a trouble with eglfs, when i run the program in beaglebone black, i have a anoucement : "can not start because can't find or lost plugin eglfs(or some think else)". My configure below:

 ./configure -device linux-beagleboard-g++ -device-option CROSS_COMPILE=~/opt/gcc-linaro-4.9-2015.05-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf- -sysroot /mnt/bbb-rootfs -opensource -confirm-license -optimized-qmake -reduce-exports -release -make libs -prefix /usr/local/qt5bbb -hostprefix /usr/local/qt5bbb -no-xcb -qt-zlib -no-opengl -qt-libpng -nomake examples -nomake tests -no-xkb

i deficient -opengl es2 while configure!?

P/s: in /mnt/bbb-rootfs   i have /mnt/bbb-rootfs/usr/lib/arm-linux-gnueabihf/libGLESv2.so.

it's mean i was installed everything about opengl, mesa, v..v. Also in

/home/ngocvu/qt5/qtbase/mkspecs/devices/linux-beagleboard-g++/qmake.conf

i update 2 lines

QMAKE_INCDIR_EGL        = /mnt/bbb-rootfs/usr/include/
QMAKE_LIBDIR_EGL        = /mnt/bbb-rootfs/usr/lib/arm-linux-gnueabihf/

but it's not work,.... old error:

ERROR: The OpenGL functionality tests failed!
You might need to modify the include and library search paths by editing QMAKE_INCDIR_OPENGL[_ES2],
QMAKE_LIBDIR_OPENGL[_ES2] and QMAKE_LIBS_OPENGL[_ES2] in the mkspec for your platform.

jsulm

@Dang-Vu Probably the OpenGL header files are not available in your sysroot.
Please post what was printed before this line:

ERROR: The OpenGL functionality tests failed!

It should tell you what exactly is missing.

Dang Vu

@jsulm it all anoucement, Sir!

Building on:  x86_64
Building for: arm
Configuration: cross_compile compile_examples enable_new_dtags largefile neon precompile_header shared rpath release c++11 c++14 concurrent dbus mremap no-qml-debug reduce_exports release_tools stl
Build options:
  Mode ................................... release; optimized tools
  Building shared libraries .............. yes
  Using C++ standard ..................... C++14
  Using gold linker ...................... no
  Using new DTAGS ........................ yes
  Using precompiled headers .............. yes
  Using LTCG ............................. no
  Target compiler supports:
    NEON ................................. yes
  Build parts ............................ libs
Qt modules and options:
  Qt Concurrent .......................... yes
  Qt D-Bus ............................... yes
  Qt D-Bus directly linked to libdbus .... yes
  Qt Gui ................................. yes
  Qt Widgets ............................. yes
Support enabled for:
  Accessibility .......................... no
  Using pkg-config ....................... yes
  QML debugging .......................... no
  udev ................................... no
  Using system zlib ...................... no
Qt Core:
  DoubleConversion ....................... yes
    Using system DoubleConversion ........ no
  GLib ................................... no
  iconv .................................. yes
  ICU .................................... no
  Logging backends:
    journald ............................. no
    syslog ............................... no
  Using system PCRE ...................... no
Qt Network:
  getaddrinfo() .......................... yes
  getifaddrs() ........................... yes
  IPv6 ifname ............................ yes
  libproxy ............................... no
  OpenSSL ................................ yes
    Qt directly linked to OpenSSL ........ no
  SCTP ................................... no
  Use system proxies ..................... yes
Qt Sql:
  DB2 (IBM) .............................. no
  InterBase .............................. no
  MySql .................................. no
  OCI (Oracle) ........................... no
  ODBC ................................... no
  PostgreSQL ............................. no
  SQLite2 ................................ no
  SQLite ................................. yes
    Using system provided SQLite ......... no
  TDS (Sybase) ........................... no
Qt Gui:
  FreeType ............................... yes
    Using system FreeType ................ no
  HarfBuzz ............................... yes
    Using system HarfBuzz ................ no
  Fontconfig ............................. no
  Image formats:
    GIF .................................. yes
    ICO .................................. yes
    JPEG ................................. yes
      Using system libjpeg ............... no
    PNG .................................. yes
      Using system libpng ................ no
  OpenGL:
    EGL .................................. no
    Desktop OpenGL ....................... no
    OpenGL ES 2.0 ........................ no
    OpenGL ES 3.0 ........................ no
    OpenGL ES 3.1 ........................ no
  Session Management ..................... yes
Features used by QPA backends:
  evdev .................................. yes
  libinput ............................... no
  mtdev .................................. no
  tslib .................................. no
  xkbcommon-evdev ........................ no
QPA backends:
  DirectFB ............................... no
  EGLFS .................................. no
  LinuxFB ................................ yes
  Mir client ............................. no
Qt Widgets:
  GTK+ ................................... no
  Styles ................................. Fusion Windows
Qt PrintSupport:
  CUPS ................................... no
Qt SerialBus:
  Socket CAN ............................. yes
  Socket CAN FD .......................... yes
QtXmlPatterns:
  XML schema support ..................... yes
Qt QML:
  QML interpreter ........................ yes
  QML network support .................... yes
Qt Quick:
  Direct3D 12 ............................ no
  AnimatedImage item ..................... yes
  Canvas item ............................ yes
  Support for Quick Designer ............. yes
  Flipable item .......................... yes
  GridView item .......................... yes
  ListView item .......................... yes
  Path support ........................... yes
  PathView item .......................... yes
  Positioner items ....................... yes
  ShaderEffect item ...................... yes
  Sprite item ............................ yes
Qt Gamepad:
  SDL2 ................................... no
Qt 3D:
  System Assimp .......................... no
Qt Wayland Client ........................ no
Qt Wayland Compositor .................... no
Qt Bluetooth:
  BlueZ .................................. no
  BlueZ Low Energy ....................... no
  Linux Crypto API ....................... no
Qt Sensors:
  sensorfw ............................... no
Qt Multimedia:
  ALSA ................................... yes
  GStreamer 1.0 .......................... no
  GStreamer 0.10 ......................... no
  Video for Linux ........................ yes
  OpenAL ................................. no
  PulseAudio ............................. no
  Resource Policy (libresourceqt5) ....... no
  DirectShow ............................. no
Qt Location:
  Gypsy GPS Daemon ....................... no
  WinRT Geolocation API .................. no
Qt WebEngine:
  Proprietary Codecs ..................... no
  Spellchecker ........................... yes

Note: -optimized-tools is not useful in -release mode.

WARNING: Accessibility disabled. This configuration of Qt is unsupported.

ERROR: Feature 'opengles2' was enabled, but the pre-condition 'config.win32 || (!config.watchos && !features.opengl-desktop && libs.opengl_es2)' failed.
ERROR: The OpenGL functionality tests failed!
You might need to modify the include and library search paths by editing QMAKE_INCDIR_OPENGL[_ES2],
QMAKE_LIBDIR_OPENGL[_ES2] and QMAKE_LIBS_OPENGL[_ES2] in the mkspec for your platform.

jsulm

@Dang-Vu Can you add -v parameter to your configure call and post the output here?