Qt 5.6.1 aarch64-linux-gnu crosscompile

yveszhang

Preparation:

packet: qt-everywhere-opensource-src-5.6.1.tar.gz (download from http://download.qt.io/official_releases/qt/5.6/)

system: Ubuntu 140.4

compiler: aarch64-linux-gnu-g++-4.9 ( install by "sudo apt-get aarch64-linux-gnu-g++-4.9" ,before that, I have change the ubuntu sourcelist to 163 ,see: http://mirrors.163.com/.help/ubuntu.html )

mkspec:
cp linux-arm-gnueabi-g++ linux-arm-g++ -r
edit qmake.conf like this:


MAKEFILE_GENERATOR      = UNIX
CONFIG                 += incremental
QMAKE_INCREMENTAL_STYLE = sublib

include(../common/linux.conf)
include(../common/gcc-base-unix.conf)
include(../common/g++-unix.conf)

# modifications to g++.conf
QMAKE_CC                = aarch64-linux-gnu-gcc-4.9
QMAKE_CXX               = aarch64-linux-gnu-g++-4.9
QMAKE_LINK              = aarch64-linux-gnu-g++-4.9
QMAKE_LINK_SHLIB        = aarch64-linux-gnu-g++-4.9

# modifications to linux.conf
QMAKE_AR                = aarch64-linux-gnu-ar cqs
QMAKE_OBJCOPY           = aarch64-linux-gnu-objcopy
QMAKE_NM                = aarch64-linux-gnu-nm -P
QMAKE_STRIP             = aarch64-linux-gnu-strip
load(qt_config)

CrossCompile
./configure -v -xplatform linux-arm-g++ -opensource -confirm-license -nomake tests
make

cd canvas3d/ && ( test -e Makefile || /home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtbase/bin/qmake /home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtcanvas3d/examples/canvas3d/canvas3d.pro -o Makefile ) && make -f Makefile 
make[3]: Entering directory `/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtcanvas3d/examples/canvas3d'
cd textureandlight/ && ( test -e Makefile || /home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtbase/bin/qmake /home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtcanvas3d/examples/canvas3d/textureandlight/textureandlight.pro -o Makefile ) && make -f Makefile 
Project ERROR: Unknown module(s) in QT: quick
make[3]: *** [sub-textureandlight-make_first] Error 3
make[3]: Leaving directory `/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtcanvas3d/examples/canvas3d'
make[2]: *** [sub-canvas3d-make_first] Error 2
make[2]: Leaving directory `/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtcanvas3d/examples'
make[1]: *** [sub-examples-make_first] Error 2
make[1]: Leaving directory `/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtcanvas3d'
make: *** [module-qtcanvas3d-make_first] Error 2

I get this error when i run make;

so I rewrite configure adding -skip canvas3d

./configure -v -xplatform linux-arm-g++ -opensource -confirm-license -skip canvas3d -nomake tests

make

this time it completes. so I input
make install

However
there are still no libQt5Quick.so.* in /usr/local/Qt-5.6.1/lib ( I confirm this by run "locate Qt5Qquick", I have run "updatedb" before that)
so this results that I compiling a project which using quick show a error:

Project ERROR: Unknown module(s) in QT: quick

any one can help me ?

SGaist

Hi and welcome to devnet,

Is your project using QtQuick1 ?

If so, that module was removed from 5.6 but it still available in sources and you can build it by hand. Just go in the module folder and do the classic path/to/qmake && make && make install.

Hope it helps

yveszhang

In all my qml files, I use "import QtQuick2" ,so I guess I am not using QtQuick1.

The "Project ERROR: Unknown module(s) in QT: quick" also happens when I try to compile qt5.6.1 by source code.

here is all the *.so lib after make install , I think I probably miss something.

 libQt5Bluetooth.so 
 libQt5CLucene.so 
 libQt5Concurrent.so 
 libQt5Core.so 
 libQt5DBus.so 
 libQt5Gui.so 
 libQt5Help.so 
 libQt5Multimedia.so 
 libQt5MultimediaWidgets.so 
 libQt5Network.so 
 libQt5Nfc.so 
 libQt5Positioning.so 
 libQt5PrintSupport.so 
 libQt5Qml.so 
 libQt5Script.so 
 libQt5ScriptTools.so 
 libQt5Sensors.so 
 libQt5SerialBus.so 
 libQt5SerialPort.so 
 libQt5Sql.so 
 libQt5Svg.so 
 libQt5Test.so 
 libQt5WebChannel.so 
 libQt5WebSockets.so 
 libQt5Widgets.so 
 libQt5XmlPatterns.so 
 libQt5Xml.so

here are the libs in my centos 6.8 which also install qt using qt-opensource-linux-x64-5.6.1.run.

 libqgsttools_p.so 
 libQt53DCore.so 
 libQt53DInput.so 
 libQt53DLogic.so 
 libQt53DQuickInput.so 
 libQt53DQuickRender.so 
 libQt53DQuick.so 
 libQt53DRender.so 
 libQt5Bluetooth.so 
 libQt5CLucene.so 
 libQt5Concurrent.so 
 libQt5Core.so 
 libQt5DBus.so 
 libQt5DesignerComponents.so 
 libQt5Designer.so 
 libQt5EglDeviceIntegration.so 
 libQt5Gui.so 
 libQt5Help.so 
 libQt5LabsTemplates.so 
 libQt5Location.so 
 libQt5MultimediaQuick_p.so 
 libQt5Multimedia.so 
 libQt5MultimediaWidgets.so 
 libQt5Network.so 
 libQt5Nfc.so 
 libQt5OpenGL.so 
 libQt5Positioning.so 
 libQt5PrintSupport.so 
 libQt5Qml.so 
 libQt5QuickParticles.so 
 libQt5Quick.so 
 libQt5QuickTest.so 
 libQt5QuickWidgets.so 
 libQt5Script.so 
 libQt5ScriptTools.so 
 libQt5Sensors.so 
 libQt5SerialBus.so 
 libQt5SerialPort.so 
 libQt5Sql.so 
 libQt5Svg.so 
 libQt5Test.so 
 libQt5WebChannel.so 
 libQt5WebEngineCore.so 
 libQt5WebEngine.so 
 libQt5WebEngineWidgets.so 
 libQt5WebSockets.so 
 libQt5WebView.so 
 libQt5Widgets.so 
 libQt5X11Extras.so 
 libQt5XcbQpa.so 
 libQt5XmlPatterns.so 
 libQt5Xml.so

Apparently , I lock of many lib after my compilation.

I run .. again , and shows the message as follow:

This is the Qt Open Source Edition.

You are licensed to use this software under the terms of
the Lesser GNU General Public License (LGPL) versions 2.1.
You are also licensed to use this software under the terms of
the GNU Lesser General Public License (LGPL) versions 3.

You have already accepted the terms of the Open Source license.

Running configuration tests (phase 1)...
Done running configuration tests.
Creating qmake...
.Done.
Running configuration tests (phase 2)...
Warning: Disabling pkg-config since PKG_CONFIG_LIBDIR is not set and
the host's .pc files would be used (even if you set PKG_CONFIG_PATH).
Set this variable to the directory that contains target .pc files
for pkg-config to function correctly when cross-compiling or
use -pkg-config to override this test.
Warning: Disabling pkg-config since PKG_CONFIG_SYSROOT_DIR is not set.
Set this variable to your sysroot for pkg-config to function correctly when
cross-compiling or use -pkg-config to override this test.
Done running configuration tests.

   Configure summary

Building on:   linux-g++ (x86_64, CPU features: mmx sse sse2)
Building for:  linux-arm-g++ (arm64, CPU features: neon)
Platform notes:

            - Also available for Linux: linux-clang linux-kcc linux-icc linux-cxx
        
Build options:
  Configuration .......... accessibility audio-backend c++11 c++14 clock-gettime clock-monotonic compile_examples concurrent cross_compile dbus enable_new_dtags evdev eventfd freetype full-config getaddrinfo getifaddrs harfbuzz iconv inotify ipv6ifname large-config largefile linuxfb medium-config minimal-config mremap neon nis no-pkg-config pcre png posix_fallocate precompile_header qpa qpa reduce_exports release rpath shared small-config threadsafe-cloexec use_gold_linker zlib 
  Build parts ............ libs examples
  Mode ................... release
  Using sanitizer(s)...... none
  Using C++ standard ..... c++14
  Using gold linker....... yes
  Using new DTAGS ........ yes
  Using PCH .............. yes
  Using LTCG ............. no
  Target compiler supports:

Qt modules and options:
  Qt D-Bus ............... yes (loading dbus-1 at runtime)
  Qt Concurrent .......... yes
  Qt GUI ................. yes
  Qt Widgets ............. yes
  Large File ............. yes
  QML debugging .......... yes
  Use system proxies ..... no

Support enabled for:
  Accessibility .......... yes
  ALSA ................... no
  CUPS ................... no
  Evdev .................. yes
  FontConfig ............. no
  FreeType ............... yes (bundled copy)
  Glib ................... no
  GStreamer .............. no
  GTK theme .............. no
  HarfBuzz ............... yes (bundled copy)
  Iconv .................. yes
  ICU .................... no
  Image formats: 
    GIF .................. yes (plugin, using bundled copy)
    JPEG ................. yes (plugin, using bundled copy)
    PNG .................. yes (in QtGui, using bundled copy)
  libinput................ no
  Logging backends: 
    journald ............... no
    syslog   ............... no
  mtdev .................. no
  Networking: 
    getaddrinfo .......... yes
    getifaddrs ........... yes
    IPv6 ifname .......... yes
    libproxy.............. no
    OpenSSL .............. no
  NIS .................... yes
  OpenGL / OpenVG: 
    EGL .................. no
    OpenGL ............... no
    OpenVG ............... no
  PCRE ................... yes (bundled copy)
  pkg-config ............. no 
  PulseAudio ............. no
  QPA backends: 
    DirectFB ............. no
    EGLFS ................ no
      EGLFS i.MX6 ........ no
      EGLFS i.MX6 Wayland. no
      EGLFS EGLDevice .... no
      EGLFS GBM .......... no
      EGLFS Mali ......... no
      EGLFS Raspberry Pi . no
      EGLFS X11 .......... no
    LinuxFB .............. yes
    Mir client............ no
    XCB .................. no
  Session management ..... yes
  SQL drivers: 
    DB2 .................. no
    InterBase ............ no
    MySQL ................ no
    OCI .................. no
    ODBC ................. no
    PostgreSQL ........... no
    SQLite 2 ............. no
    SQLite ............... yes (plugin, using bundled copy)
    TDS .................. no
  tslib .................. no
  udev ................... no
  xkbcommon-x11........... no
  xkbcommon-evdev......... no
  zlib ................... yes (bundled copy)


Qt is now configured for building. Just run 'make'.
Once everything is built, you must run 'make install'.
Qt will be installed into /usr/local/Qt-5.6.1

Prior to reconfiguration, make sure you remove any leftovers from
the previous build.

this time I notice that there are two warning, But I still confused how to use pkg-config

Warning: Disabling pkg-config since PKG_CONFIG_LIBDIR is not set and
the host's .pc files would be used (even if you set PKG_CONFIG_PATH).
Set this variable to the directory that contains target .pc files
for pkg-config to function correctly when cross-compiling or
use -pkg-config to override this test.
Warning: Disabling pkg-config since PKG_CONFIG_SYSROOT_DIR is not set.
Set this variable to your sysroot for pkg-config to function correctly when
cross-compiling or use -pkg-config to override this test.
Done running configuration tests.

I just add pkg-config and with no skip

./configure -v -xplatform linux-arm-g++ -opensource -confirm-license -pkg-config  -nomake tests

but still get the same error when run make

SGaist

Seems you are missing the Qt declarative module.

yveszhang

qtdeclarative seems has been built but not completely

I "mkdir" build
do the configure thing in the build then make

when the compile terminate

cd qtdeclarative
make

Nothing to be done for the first in each directory
there are only libQt5Qml.so in the libs which I think libQt5Quick should appear here
there are alse not quick directory in the src directory

this is srcs in qt-everywhere-opensource-src-5.6.1/qtdeclarative/src

3rdparty  imports  particles  plugins  qml  qmldevtools  qmltest  quick  quickwidgets  src.pro

however this is srcs in qt-everywhere-opensource-src-5.6.1/build/qtdeclarative/

imports  Makefile  plugins  qml  qmldevtools

SGaist

Strange, at that point I'd rather nuke the build folder completely and start from a fresh new.

You should also do out of source builds, that will make things easier to handle.

yveszhang

what does " do out of source builds " mean?

It seems no other way to get Arm Qt libs

SGaist

Based on what you posted, It means:

cd ~/Desktop/
mkdir build_Qt_arm
cd build_Qt_arm
../qt-everywhere-opensource-src-5.6.1/configure -whatever_you_need
make

I'd recommend adding -nomake examples to your options.

yveszhang

Finally， I found the reason there are no quick module being compiled. -- lacking of OPENGL libs

OpenGL / OpenVG: 
    EGL .................. no
    OpenGL ............... no
    OpenVG ............... no

after copying some libs and setting some configure, Fianlly I made configure passed.

The configure result showing this:
OpenGl.........yes

and this is part of my qmake.config

    PKG_CONFIG_LIBDIR       = /home/zyf/Desktop/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/aarch64-linux-gnu/lib64/pkgconfig
    QMAKE_LIBDIR_OPENGL     = /home/zyf/Desktop/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/aarch64-linux-gnu/usr/lib/aarch64-linux-gnu
    QMAKE_LIBS_OPENGL       = -Wl,-rpath-link,/home/zyf/Desktop/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/aarch64-linux-gnu/usr/lib/aarch64-linux-gnu

So I run make again, hoping that this time will make it.

However, I error comes as usual

/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/plugins/imageformats/webp/qwebphandler_p.h:41:25: fatal error: webp/decode.h: No such file or directory
 #include "webp/decode.h"

I remembered this moudle which has been compile when I use g++

so I compare the inform between using g++ and using aarch64-linux-gnu-g++

g++                   -c -pipe -O2 -std=c++1z -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -D_REENTRANT -fPIC -DQT_NO_MTDEV -DQT_NO_LIBUDEV -DQT_NO_TSLIB -DQT_NO_LIBINPUT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/plugins/imageformats/webp -I. -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/3rdparty/libwebp -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/3rdparty/libwebp/src -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/3rdparty/libwebp/src/dec -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/3rdparty/libwebp/src/enc -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/3rdparty/libwebp/src/dsp -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/3rdparty/libwebp/src/mux -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/3rdparty/libwebp/src/utils -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/3rdparty/libwebp/src/webp -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtbase/include -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtbase/include/QtGui -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/build/qtbase/include -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/build/qtbase/include/QtGui -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtbase/include/QtCore -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/build/qtbase/include/QtCore -I.moc -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtbase/mkspecs/linux-g++ -o .obj/qwebphandler.o /home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/plugins/imageformats/webp/qwebphandler.cpp

 aarch64-linux-gnu-g++ -c -pipe -O2 -std=c++1y -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -D_REENTRANT -fPIC -DQT_NO_MTDEV -DQT_NO_LIBUDEV -DQT_NO_TSLIB -DQT_NO_LIBINPUT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/plugins/imageformats/webp -I. -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtbase/include -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtbase/include/QtGui -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/build2/qtbase/include -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/build2/qtbase/include/QtGui -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtbase/include/QtCore -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/build2/qtbase/include/QtCore -I.moc -I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtbase/mkspecs/linux-arm-g++ -o .obj/qwebphandler.o /home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/plugins/imageformats/webp/qwebphandler.cpp

The following include path appears in the "g++ line" , but not in the "aarch64-linux-gnu-g++ line" so the compiler could not find the missing file.

-I/home/zyf/Desktop/qt-everywhere-opensource-src-5.6.1/qtimageformats/src/3rdparty/libwebp/src

but why? what make it different?

SGaist

Did you reconfigure over your old build ? If so that might be a reason, you should either nuke the folder and start from fresh or do cleanup before calling configure again.

I'd recommend an out of source build so you leave the sources clean and can easily restart from scratch.