Qt5:嵌入式设备QT5动态库编译，QT5移植

小咪咪 2022-06-16 02:23 387阅读 0赞

# 简介 #

开发环境为ubuntu14.04,开发工具为TI官方的sdk（AM57xx系列），需要的qt源码去官网下载，不支持触摸屏所以没有添加tslib

# 需要工具 #

- Perl 5.8 or later
    - Python 2.7 or later
    - C++ compiler supporting the C++98 standard(SDK提供)
    - 编译套装 `sudo apt-get install build-essential`

# 辅助工具 #

sudo apt-get install Git git-core
    sudo apt-get install autoconf bison flex gperf
    sudo apt install libtool

# 环境设置 #

## 全局环境设置 ##

编辑~/.bashrc 添加:  
`export PATH="/home/codebee/ti-linux-am57xx/linux-devkit/sysroots/x86_64-arago-linux/usr/bin:$PATH"`

## Qt源码编译环境设置 ##

进入qt-everywhere-opensource-src-5.6.2/qtbase/mkspecs文件夹，拷贝linux-arm-gnueabi-g++命名为linux-arm-gnueabihf 打开其中的qmake.conf 修改其中内容如下

#
    # qmake configuration for building with arm-linux-gnueabi-g++
    #
    
    MAKEFILE_GENERATOR      = UNIX
    CONFIG                 += incremental
    QMAKE_INCREMENTAL_STYLE = sublib
    
    QT_QPA_DEFAULT_PLATFORM = eglfs
    QMAKE_LIBS_EGL         += -lEGL
    QMAKE_LIBS_OPENGL_ES2  += -lGLESv2 -lEGL -lGAL
    
    include(../common/linux.conf)
    include(../common/gcc-base-unix.conf)
    include(../common/g++-unix.conf)
    
    # modifications to g++.conf
    QMAKE_CC                = arm-linux-gnueabihf-gcc
    QMAKE_CXX               = arm-linux-gnueabihf-g++
    QMAKE_LINK              = arm-linux-gnueabihf-g++
    QMAKE_LINK_SHLIB        = arm-linux-gnueabihf-g++
    
    # modifications to linux.conf
    QMAKE_AR                = arm-linux-gnueabihf-ar cqs
    QMAKE_OBJCOPY           = arm-linux-gnueabihf-objcopy
    QMAKE_NM                = arm-linux-gnueabihf-nm -P
    QMAKE_STRIP             = arm-linux-gnueabihf-strip
    load(qt_config)

# 生成编译Qt的makefile #

进入qt-everywhere-opensource-src-5.6.2文件夹 新建config.sh文件 内容如下

./configure -opensource -confirm-license \
    -release -c++std c++11 \ --prefix=/opt/QT5 \ -xplatform linux-arm-gnueabihf \ -shared \ -iconv \ -developer-build \ -eglfs -opengl es2 \ -qt-zlib -qt-libjpeg -qt-libpng -dbus-runtime \ -nomake examples -nomake tests -no-xcb -no-iconv \ -skip qtenginio -skip qtlocation -skip qtmultimedia \ -skip qtwebsockets -v 
    
    #-tslib \
    #-make tools \
    #-v 是详细输出模式
    #--prefix是make install后编译好的qt安装的位置
    # -no-icu, this will disable the webkit.
    #make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j4
    #make install

执行 config.sh不出错的话makefile就生成好了,接下来执行( -j4意思是用四个线程编译，和自己cpu数一致就行不是数越大越快)

make -j4
    sudo make install

# 开发板环境qt环境配置 #

编译好的qt打包拷贝到开发板的/opt目录解压

## 配置lib ##

vi /etc/ld.so.conf 添加一行 ***/opt/lib***  
然后执行 ***sudo ldconfig -v***

## 配置Qt 运行环境 ##

export QTDIR=/opt
    export QT_QPA_FONTDIR=$QTDIR/lib/fonts
    export QT_QPA_PLATFORM_PLUGIN_PATH=$QTDIR/plugins
    export LD_LIBRARY_PATH=$QTDIR/lib:$LD_LIBRARY_PATH
    #export QT_QPA_PLATFORM=linuxfb:fb=/dev/fb0:size=1920x1080:mmSize=1024x768:offset=0x0:tty=/dev/tty1
    export QML_IMPORT_PATH=$QTDIR/qml
    export QML2_IMPORT_PATH=$QTDIR/qml
    export QT_QPA_EGLFS_FB="/dev/fb0"
    #export QT_QPA_EGLFS_WIDTH=1920
    #export QT_QPA_EGLFS_HEIGHT=1080
    export QT_QPA_EGLFS_DEPTH=32
    #export QT_QPA_EGLFS_PHYSICAL_WIDTH=1920
    #export QT_QPA_EGLFS_PHYSICAL_HEIGHT=1080