Compilation Error with Cross compiler for Apalis TK1

Technical Support
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1

Hello,
I want to configure QT Creator for Cross Compiling to execute GUI-Application. On my host machine I use Ubuntu 14.04 LTS (32-Bit) as operation system. For the installation of the SDK I followed the given Links:

For the compilation I execute the following commands:

bitbake -k meta-toolchain-qt5
bitbake -k angstrom-lxde-image

after the succeed compilation I install the SDK with:

../deploy/sdk/angstrom-glibc-x86_64-armv7at2hf-neon-v2016.12-toolchain.sh -S

The qmake command could succeed.
Now I install the given packages and the QT Creator.
Befor I open the QT Creator over the command line, I execute:

. /usr/local/oecore-x86_64/environment-setup-armv7at2hf-neon-angstrom-linux-gnueabi

echo $OE_QMAKE_CXX

The system answer was :

    arm-angstrom-linux-gnueabi-g++ -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard --sysroot=/usr/local/oecore-x86_64/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi

Now I configurate the different components of the IDE successfully. Only the Device installation failed with the following error.

SSH connection failure: SSH Protocol error: Server and client capabilities don’t match. Client list was: aes128-cbc,3des-cbc.
Server list was chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com.

To test the installation I create a QT Widget Application, with only a text label in the UI inserted. The compilation failed. The top of the compilation output is given in the following section.

/usr/local/oecore-i686/sysroots/i686-angstromsdk-linux/usr/bin/qt5/uic ../testApalaris1/mainwindow.ui -o ui_mainwindow.h
g++ -c -pipe -g -Wall -W -D_REENTRANT -fPIC -DQT_QML_DEBUG -DQT_DECLARATIVE_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../testApalaris1 -I. -I/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5 -I/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtWidgets -I/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtGui -I/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtCore -I. -I. -I/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/lib/qt5/mkspecs/linux-g++ -o main.o ../testApalaris1/main.cpp
In file included from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtCore/qglobal.h:83:0,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtGui/qwindowdefs.h:43,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtWidgets/qwidget.h:43,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtWidgets/qmainwindow.h:43,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtWidgets/QMainWindow:1,
                 from ../testApalaris1/mainwindow.h:4,
                 from ../testApalaris1/main.cpp:1:
/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtCore/qcompilerdetection.h:562:6: error: #error Qt requires a C++11 compiler and yours does not seem to be that.
 #    error Qt requires a C++11 compiler and yours does not seem to be that.
      ^
In file included from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtCore/qatomic.h:46:0,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtCore/qglobal.h:1145,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtGui/qwindowdefs.h:43,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtWidgets/qwidget.h:43,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtWidgets/qmainwindow.h:43,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtWidgets/QMainWindow:1,
                 from ../testApalaris1/mainwindow.h:4,
                 from ../testApalaris1/main.cpp:1:
/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtCore/qbasicatomic.h:61:4: error: #error "Qt requires C++11 support"
 #  error "Qt requires C++11 support"
    ^
In file included from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtCore/qobjectdefs.h:50:0,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtGui/qwindowdefs.h:44,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtWidgets/qwidget.h:43,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtWidgets/qmainwindow.h:43,
                 from /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtWidgets/QMainWindow:1,
                 from ../testApalaris1/mainwindow.h:4,
                 from ../testApalaris1/main.cpp:1:
/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtCore/qobjectdefs_impl.h:241:9: warning: identifier 'decltype' is a keyword in C++11 [-Wc++0x-compat]
         template <typename F> static auto test(F f) -> decltype(((f.operator()((dummy<ArgList>())...)), int()));

For a second test I create a console application for C++ without any QT sources. This compilation succeed but, is not executable on the target machine rather one host machine. so I guess QT use the wrong compiler.
At least I insert the top of the makefile, for the inserted compilation errors.

#############################################################################
# Makefile for building: testApalaris1
# Generated by qmake (3.0) (Qt 5.7.1)
# Project:  ../testApalaris1/testApalaris1.pro
# Template: app
# Command: /usr/local/oecore-i686/sysroots/i686-angstromsdk-linux/usr/bin/qt5/qmake -spec linux-g++ CONFIG+=debug CONFIG+=declarative_debug CONFIG+=qml_debug -o Makefile ../testApalaris1/testApalaris1.pro
#############################################################################

MAKEFILE      = Makefile

####### Compiler, tools and options

CC            = gcc
CXX           = g++
DEFINES       = -DQT_QML_DEBUG -DQT_DECLARATIVE_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB
CFLAGS        = -pipe -g -Wall -W -D_REENTRANT -fPIC $(DEFINES)
CXXFLAGS      = -pipe -g -Wall -W -D_REENTRANT -fPIC $(DEFINES)
INCPATH       = -I../testApalaris1 -I. -I/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5 -I/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtWidgets -I/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtGui -I/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/include/qt5/QtCore -I. -I. -I/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/lib/qt5/mkspecs/linux-g++
QMAKE         = /usr/local/oecore-i686/sysroots/i686-angstromsdk-linux/usr/bin/qt5/qmake
DEL_FILE      = rm -f
CHK_DIR_EXISTS= test -d
MKDIR         = mkdir -p
COPY          = cp -f
COPY_FILE     = cp -f
COPY_DIR      = cp -f -R
INSTALL_FILE  = install -m 644 -p
INSTALL_PROGRAM = install -m 755 -p
INSTALL_DIR   = cp -f -R
DEL_FILE      = rm -f
SYMLINK       = ln -f -s
DEL_DIR       = rmdir
MOVE          = mv -f
TAR           = tar -cf
COMPRESS      = gzip -9f
DISTNAME      = testApalaris11.0.0
DISTDIR = /home/adminuser/WorkspaceQT/test1/build-testApalaris1-ApalarisTK1-Debug/.tmp/testApalaris11.0.0
LINK          = g++
LFLAGS        = 
LIBS          = $(SUBLIBS) -L/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/lib -lQt5Widgets -L/home/adminuser/OpenEmbedded/oe-core/build/tmp-glibc/sysroots/apalis-tk1/usr/lib/arm-linux-gnueabihf/tegra -lQt5Gui -lQt5Core -lGL -lpthread 
AR            = ar cqs
RANLIB        = 
SED           = sed
STRIP         = strip

####### Output directory

OBJECTS_DIR   = ./

####### Files

SOURCES       = ../testApalaris1/main.cpp \
		../testApalaris1/mainwindow.cpp moc_mainwindow.cpp
OBJECTS       = main.o \
		mainwindow.o \
		moc_mainwindow.o
DIST          = /usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/lib/qt5/mkspecs/features/spec_pre.prf \
		/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/lib/qt5/mkspecs/common/unix.conf \
		/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/lib/qt5/mkspecs/common/linux.conf \
		/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/lib/qt5/mkspecs/common/sanitize.conf \
		/usr/local/oecore-i686/sysroots/armv7at2hf-neon-angstrom-linux-gnueabi/usr/lib/qt5/mkspecs/common/gcc-base.conf \

Do you now any reasons the fix the problem or can I do anything to bypass the problem?

Thanks.

2

I see a few issues here. First you are using a 32-bit version of Ubuntu which is not recommended for building recent Qt versions due to possible address space shortage in the linker step. Furthermore you seem to have installed the x86_64 Qt tool chain which of course won’t work on your 32-bit Ubuntu so during compilation it seems to fall back to the host g++ compiler which is probably a really old one on that ancient Ubuntu not being C++11 compliant. So I suggest updating your Linux workstation installation to a recent Linux 64-bit distribution as e.g. outlined here and trying it again.

3

Thanks for your answer. I tried on Linux 64-Bit and now the compiling process works.

4

Thanks for your answer.

You are very welcome.

I tried on Linux 64-Bit and now the compiling process works.

Great, thanks for letting us know.