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交叉编译QT到嵌入式arm Linux系统

2019年7月20日 2条评论 1,544次阅读 0人点赞

《交叉编译QT到嵌入式arm Linux系统》
在交叉编译QT前，需要先交叉编译触摸屏校准
触摸校准源码github地址
https://github.com/libts/tslib.git

下载源码-v1.12版本
wget https://github.com/libts/tslib/releases/download/1.12/tslib-1.12.tar.xz

配置源码，生成Makefile文件

./configure –host=arm-linux ac_cv_func_malloc_0_nonnull=yes CC=arm-none-linux-gnueabi-gcc CXX=arm-none-linux-gnueabi-g++ -prefix=/usr/local/tslib

说明：
–prefix 安装路径
–host 平台
–target-os 系统
CC 交叉编译器gcc名称
CXX 交叉编译器g++名称

编译
make -j4

安装到指定目录
make install

将tslib安装路径下的所有文件，拷贝至arm linux最小根文件系统的/usr/local/目录
《交叉编译QT到嵌入式arm Linux系统》

下载QT5.7.0源码，源码的版本尽量与开发环境版本一致，QT开发环境安装见上一篇博客
https://download.qt.io/archive/qt/5.7/5.7.0/single/qt-everywhere-opensource-src-5.7.0.tar.xz

解压
tar -vxf qt-everywhere-opensource-src-5.7.0.tar.xz

修改qmake.conf文件
cd qt-everywhere-opensource-src-5.9.5/qtbase/mkspecs/linux-arm-gnueabi-g++/
vi qmake.conf

修改内容交叉编译器，最好以绝对路径的方式写入

#

# qmake configuration for building with arm-linux-gnueabi-g++

#

MAKEFILE_GENERATOR      = UNIX

CONFIG                 += incremental

QMAKE_INCREMENTAL_STYLE = sublib

QT_QPA_DEFAULT_PLATFORM = linuxfb

QMAKE_CFLAGS_RELEASE   += -O2 -march=armv7-a

QMAKE_CXXFLAGS_RELEASE   += -O2 -march=armv7-a

include(../common/linux.conf)

include(../common/gcc-base-unix.conf)

include(../common/g++-unix.conf)

# modifications to g++.conf

QMAKE_CC                = /usr/local/arm/arm-2009q3/bin/arm-none-linux-gnueabi-gcc

QMAKE_CXX               = /usr/local/arm/arm-2009q3/bin/arm-none-linux-gnueabi-g++

QMAKE_LINK              = /usr/local/arm/arm-2009q3/bin/arm-none-linux-gnueabi-g++

QMAKE_LINK_SHLIB        = /usr/local/arm/arm-2009q3/bin/arm-none-linux-gnueabi-g++

# modifications to linux.conf

QMAKE_AR                = /usr/local/arm/arm-2009q3/bin/arm-none-linux-gnueabi-ar cqs

QMAKE_OBJCOPY           = /usr/local/arm/arm-2009q3/bin/arm-none-linux-gnueabi-objcopy

QMAKE_NM                = /usr/local/arm/arm-2009q3/bin/arm-none-linux-gnueabi-nm -P

QMAKE_STRIP             = /usr/local/arm/arm-2009q3/bin/arm-none-linux-gnueabi-strip

load(qt_config)

回到源码根目录，执行配置，生成Makefile文件

./configure -v -prefix /home/cheng/qtworks/qt5/install -opensource -release  -xplatform linux-arm-gnueabi-g++ -no-opengl -no-dbus -no-icu -no-eglfs -no-iconv -skip qtpurchasing -skip qt3d -skip qtcanvas3d -skip qtdeclarative -I/home/cheng/qtworks/tslib/install/include -L/home/cheng/qtworks/tslib/install/lib

参数说明
-prefix 安装路径
-xplatform 交叉编译器
-I 触摸校准头文件路径
-L 触摸校准库路径

配置过程会提示输入yes等
《交叉编译QT到嵌入式arm Linux系统》

编译
make -j4

安装
make install

新建脚本，设置环境变量
vim setARMenv.sh

内容

#!/bin/sh
export QTEDIR=/home/cheng/qtworks/qt5/install:$QTEDIR
export PATH=/home/cheng/qtworks/qt5/install/bin:$PATH
export LD_LIBRARY_PATH=/home/cheng/qtworks/qt5/install/lib: LD_LIBRARY_PATH
export QMAKESPEC=/home/cheng/qtworks/qt5/qt-everywhere-opensource-src-5.7.0/qtbase/mkspecs/linux-arm-gnueabi-g++

《交叉编译QT到嵌入式arm Linux系统》

设置脚本运行权限
chmod +x setARMenv.sh

执行新环境变量，对当前用户生效，重启后时效，需要重新运行
source setARMenv.sh

#!/bin/sh
export QTEDIR=/home/cheng/qtworks/qt5/install:$QTEDIR
export PATH=/home/cheng/qtworks/qt5/install/bin:$PATH
export LD_LIBRARY_PATH=/home/cheng/qtworks/qt5/install/lib: LD_LIBRARY_PATH
export QMAKESPEC=/home/cheng/qtworks/qt5/qt-everywhere-opensource-src-5.7.0/qtbase/mkspecs/linux-arm-gnueabi-g++

查看qmake版本
《交叉编译QT到嵌入式arm Linux系统》

用编译后qmake编译qt工程，查看文件属性(或查看example里面的例程)，显示为ARM，则交叉编译成功
《交叉编译QT到嵌入式arm Linux系统》

进入到交叉编译好的QT库，将/include /lib /plugins 三个文件夹拷贝至arm linux最小根文件系统的opt目录
《交叉编译QT到嵌入式arm Linux系统》

拷贝交叉编译器相关lib到arm linux最小根文件系统的/lib目录
sudo cp -r /usr/local/arm/arm-2009q3/arm-none-linux-gnueabi/libc/lib/*so* ./lib/ -d
sudo cp -r /usr/local/arm/arm-2009q3/arm-none-linux-gnueabi/libc/usr/lib/*so* ./lib/ -d

配置最小系统/etc/profile环境变量文件
vi /etc/profile

# Ash profile
# vim: syntax=sh
# No core files by default
ulimit -S -c 0 > /dev/null 2>&1
USER=”`id -un`”
LOGNAME=$USER
PS1='[$USER@$HOSTNAME]# ‘
PATH=$PATH
HOSTNAME=`/bin/hostname`
export USER LOGNAME PS1 PATH
#lib
export LD_LIBRARY_PATH=/lib:/usr/lib:$LD_LIBRARY_PATH
# tslib
export TSLIB_ROOT=/usr/local/tslib
export TSLIB_CONSOLEDEVICE=none
export TSLIB_FBDEVICE=/dev/fb0
export TSLIB_TSDEVICE=/dev/input/event2
export TSLIB_TSEVENTTYPE=input
export LD_LIBRARY_PATH=$TSLIB_ROOT/lib:$LD_LIBRARY_PATH
export TSLIB_PLUGINDIR=$TSLIB_ROOT/lib/ts
export TSLIB_CONFFILE=$TSLIB_ROOT/etc/ts.conf
export TSLIB_CALIBFILE=/etc/pointercal
# Qt
export QT_ROOT=/opt/Qt5.7.0
export LD_LIBRARY_PATH=$QT_ROOT/plugins/imageformats/:$QT_ROOT/lib:$LD_LIBRARY_PATH
export QT_QPA_GENERIC_PLUGINS=tslib
export QT_QPA_FONTDIR=$QT_ROOT/lib/fonts
export QT_QPA_PLATFORM_PLUGIN_PATH=$QT_ROOT/plugins
export QT_QPA_PLATFORM=linuxfb:tty=/dev/fb0
export QWS_MOUSE_PROTO=’Tslib:/dev/input/event2 MouseMan:/dev/input/mice’
export PATH=/bin:/sbin:/usr/bin/:/usr/sbin
if [ -e /etc/pointercal ] ; then
    fsize=$(/bin/ls -al /etc/pointercal | cut -d’ ‘ -f 5)
    echo $fsize
    if [ $fsize -ge “1” ]; then
        echo “/etc/pointercal is exit”
    else
        echo “/etc/pointercal is empty”
                rm /etc/pointercal
                /usr/local/tslib/bin/ts_calibrate
    fi
else
    echo “/etc/pointercal not found”
    /usr/local/tslib/bin/ts_calibrate
fi
FB_SIZE=$(cat /sys/class/graphics/fb0/virtual_size)
case “$FB_SIZE” in
1024,1536)
export QWS_DISPLAY=”LinuxFb:mmWidth91:mmHeight53:1″
echo -e “\n———–>lcd is 9.7”
export QWS_SIZE=1024×768
;;
800,2560)
export QWS_DISPLAY=”LinuxFb:mmWidth91:mmHeight53:1″
echo -e “\n———–>lcd is 7.0”
export QWS_SIZE=1280*800
;;
480,544)
export QWS_DISPLAY=”LinuxFb:mmWidth91:mmHeight53:1″
echo -e “\n———–>lcd is 4.3”
export QWS_SIZE=480*272
esac
#export QWS_DISPLAY=”LinuxFb:mmWidth91:mmHeight53:1″
#lcd  can be set Rot0 Rot90 Rot180 Rot270
export QWS_DISPLAY=Transformed:Rot90
export HOME=/root

完成后，返回根文件系统上一层路径，执行命令，生成根文件系统镜像
make_ext4fs -s -l 996147200 -a root -L linux system.img system

重新镜像烧写
fastboot.exe flash system system.img
fastboot -w
fastboot reboot

开发板接入屏幕，正常开机后会执行屏幕校准，并在/etc/目录下生成一个校准数据文件/etc/pointercal

串口进入linux开发板，拷贝交叉编译的QT例程到开发板，运行后，屏幕上能正常运行例程，则QT交叉编译成功。

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  1. 乐毅伐齐说道：
    2019年8月5日 上午11:40

    在make install的时候出现了问题：

    qpaintervideosurface.cpp: In function ‘void makeCurrent(QGLContext*)’:
    qpaintervideosurface.cpp:67:12: error: invalid use of incomplete type ‘class QGLContext’
    context->makeCurrent();//
    ^~
    In file included from /home/snac/qt-everywhere-src-5.12.4/qtbase/include/QtWidgets/qwidget.h:1:0,
    from /home/snac/qt-everywhere-src-5.12.4/qtbase/include/QtWidgets/../../src/widgets/widgets/qabstractbutton.h:46,
    from /home/snac/qt-everywhere-src-5.12.4/qtbase/include/QtWidgets/qabstractbutton.h:1,
    from /home/snac/qt-everywhere-src-5.12.4/qtbase/include/QtWidgets/QtWidgets:6,
    from ../../include/QtMultimediaWidgets/QtMultimediaWidgetsDepends:6:
    /home/snac/qt-everywhere-src-5.12.4/qtbase/include/QtWidgets/../../src/widgets/kernel/qwidget.h:703:18: note: forward declaration of ‘class QGLContext’
    friend class QGLContext;
    ^~~~~~~~~~
    qpaintervideosurface.cpp:69:26: error: invalid use of incomplete type ‘class QGLContext’
    auto handle = context->contextHandle();//
    ^~
    In file included from /home/snac/qt-everywhere-src-5.12.4/qtbase/include/QtWidgets/qwidget.h:1:0,
    from /home/snac/qt-everywhere-src-5.12.4/qtbase/include/QtWidgets/../../src/widgets/widgets/qabstractbutton.h:46,
    from /home/snac/qt-everywhere-src-5.12.4/qtbase/include/QtWidgets/qabstractbutton.h:1,
    from /home/snac/qt-everywhere-src-5.12.4/qtbase/include/QtWidgets/QtWidgets:6,
    from ../../include/QtMultimediaWidgets/QtMultimediaWidgetsDepends:6:
    /home/snac/qt-everywhere-src-5.12.4/qtbase/include/QtWidgets/../../src/widgets/kernel/qwidget.h:703:18: note: forward declaration of ‘class QGLContext’
    friend class QGLContext;
    ^~~~~~~~~~
    qpaintervideosurface.cpp:70:35: error: incomplete type ‘QOpenGLContext’ used in nested name specifier
    if (handle && QOpenGLContext::currentContext() != handle)
    ^~~~~~~~~~~~~~
    qpaintervideosurface.cpp: At global scope:
    qpaintervideosurface.cpp:65:13: warning: ‘void makeCurrent(QGLContext*)’ defined but not used [-Wunused-function]
    static void makeCurrent(QGLContext *context)
    ^~~~~~~~~~~
    Makefile:4906: recipe for target '.obj/qpaintervideosurface.o' failed
    make[3]: *** [.obj/qpaintervideosurface.o] Error 1
    make[3]: Leaving directory '/home/snac/qt-everywhere-src-5.12.4/qtmultimedia/src/multimediawidgets'
    Makefile:85: recipe for target 'sub-multimediawidgets-install_subtargets' failed
    make[2]: *** [sub-multimediawidgets-install_subtargets] Error 2
    make[2]: Leaving directory '/home/snac/qt-everywhere-src-5.12.4/qtmultimedia/src'
    Makefile:60: recipe for target 'sub-src-install_subtargets' failed
    make[1]: *** [sub-src-install_subtargets] Error 2
    make[1]: Leaving directory '/home/snac/qt-everywhere-src-5.12.4/qtmultimedia'
    Makefile:589: recipe for target 'module-qtmultimedia-install_subtargets' failed
    make: *** [module-qtmultimedia-install_subtargets] Error 2
    请问各位大佬这是什么问题，

    回复
    1. cheng说道：
      2019年8月7日 上午1:18

      用configure配置的安装路径出错了？编译正常吗？

      回复

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