编译Qt arm库并在开发板运行

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Qt的ARM版编译

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交叉编译器：buidroot-2012.08

：qt-everywhere-opensource-src-4.6.4.tar.gz

先把准备工作做好！

创建下载目录：/home/lzj/fl2440/3rdparty/qt_install

进入源码目录，添加配置脚本：

#!/bin/sh./configure -prefix /home/lzj/fl2440/3rdparty/qt_install \-release \-shared \-fast \-no-largefile \-qt-sql-sqlite \-no-qt3support \-no-xmlpatterns \-no-mmx \-no-3dnow \-no-sse \-no-sse2 \-no-svg \-no-webkit \-qt-zlib \-qt-gif \-qt-libtiff \-qt-libpng \-qt-libmng \-qt-libjpeg \-make libs \-xplatform qws/linux-arm-g++ \-nomake tools \-nomake examples \-nomake docs \-nomake demo \-no-nis \-no-cups \-no-iconv \-no-dbus \-no-openssl \-embedded arm \-little-endian \-qt-freetype \-depths 16,18 \-no-glib \-qt-mouse-tslib \-no-javascript-jit \-no-script \-no-scripttools \-qt-gfx-transformed \  -qt-gfx-linuxfb \

修改源码：vim /home/lzj/fl2440/3rdparty/qt4_source/qt-everywhere-opensource-src-4.6.4/mkspecs/qws/linux-arm-g++/qmake.conf

                                                                                                                            #   # qmake configuration for building with arm-linux-g++   #      include(../../common/g++.conf)   include(../../common/linux.conf)   include(../../common/qws.conf)      QMAKE_INCDIR = /home/lzj/fl2440/3rdparty/ts_install/include  QMAKE_LIBDIR = /home/lzj/fl2440/3rdparty/ts_install/lib      # modifications to g++.conf  QMAKE_CC                = /opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-gcc -lts  QMAKE_CXX               = /opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-g++ -lts  QMAKE_LINK              = /opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-g++ -lts  QMAKE_LINK_SHLIB        = /opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-g++ -lts    # modifications to linux.conf  QMAKE_AR                = /opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-ar cqs  QMAKE_OBJCOPY           = /opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-objcopy  QMAKE_STRIP             = /opt/buildroot-2012.08/arm920t/usr/bin/arm-linux-strip   load(qt_config)

上面主要是放你tslib库的路径和你交叉编译器的路径，全用绝对路径！（血的教训）

不然会出现下面错误：

The tslib functionality test failed!
You might need to modify the include and library search paths by editing
QMAKE_INCDIR and QMAKE_LIBDIR in

vim /home/lzj/fl2440/3rdparty/qt4_source/qt-everywhere-opensource-src-4.6.4/src/gui/itemviews/qabstractitemview.cpp

将'Key_BackSpace' 更改为将'Key_Backspace'

不然就是这个错误：

itemviews/qabstractitemview.cpp:2311: error: 'Key_BackSpace' is not a member of 'Qt'

如果你出现了下面这个错误：The specified system/compiler is not supported:

解决方法是：

cd ~
vim ./bash_profile
export MKSPECS=/home/lzj/fl2440/3rdparty/qt4_source/qt-everywhere-opensource-src-4.6.4（就是你qt源码目录）

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OK已经移植好了，再把qmake放到你的usr/local/bin里面去吧，不然找不到这个命令，或者你自己加个路径export

对于程序的编译只需要几步

qmake -project

qmake

make

就可以了

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将库移植到开发板，我的选择是将所有库都打包然后sz到电脑，再tftp到开发板，一共3个库，qt的lib ，fonts（这个在qtlib里面有一个文件夹），还有就是tslib（关于tslib的移植看我前面的博客）http://blog.csdn.net/liuzijiang1123/article/details/45670049

然后就是改根文件系统的配置文件。

这个是我的配置文件vim /etc/profile

 export PATH=\   /bin:\   /sbin:\   /usr/bin:\   /usr/sbin:\   /usr/local/bin:\   /apps/bin:\  /apps/tools:\  /apps/tslib/bin\    export PS1='\w >: '    export USER=`id -un`  export LOGNAME=$USER  export HOSTNAME=`/bin/hostname`  export HISTSIZE=500  export HISTFILESIZE=500  export PAGER='/bin/more '  export EDITOR='/bin/vi'  export INPUTRC=/etc/inputrc  export network_cfg_dir=/apps/etc/network  export LD_LIBRARY_PATH=/lib:/usr/lib:/apps/tslib/lib:/apps/qtlib:/apps/fonts  export network_cfg_dir=/apps/etc/network    #touch screen tslib setting  export TSLIB_ROOT=/apps/tslib  export TSLIB_CONFFILE=$TSLIB_ROOT/etc/ts.conf  export TSLIB_TSDEVICE=/dev/event1  export QWS_MOUSE_PROTO=TSLIB:/dev/event1  export TSLIB_CONSOLEDEVICE=none  export TSLIB_FBDEVICE=/dev/fb0  export TSLIB_PLUGINDIR=$TSLIB_ROOT/lib/ts  export TSLIB_CALIBFILE=$TSLIB_ROOT/etc/pointercal  export QTLIB=/apps/qtlib  export QT_QWS_FONTDIR=/apps/fonts  ### Some aliases  alias vim='vi'  alias ll='ls -l'  alias l.='ls -d .*'  alias df='df -h'

如果运行程序的时候还是找不到库，那么就手动把这个库放到/lib下就行

里面的event1是你触摸屏的event.你可以cat /dev/event1 在屏幕上乱按，只要有乱码输出则表示是触摸屏的event，有的可能是event0

如果你qt程序运行点鼠标点了没用的话，就是下面这2个环境变量没设置对

export QWS_MOUSE_PROTO=TSLIB:/dev/event1

export TSLIB_TSDEVICE=/dev/event1

如果你的Qt在PC上显示和开发板上显示大小不一样的话：

export QWS_SIZE=480x272//这句可以将开发板的屏幕参数传递给Qt程序，然后就可以在Qt中正确设置窗口大小了

如何还有这个错误：QFontDatabase: Cannot find font directory /home/lzj/fl2440/3rdparty/qt_install/lib/fonts - is Qt installed correctly?
Aborted

解决方法：

export QT_QWS_FONTDIR=/apps/fonts

OK！最后运行的时候敲 ./a.out -qws 为什么要加-qws大家可以去了解一下，如果想打印中文的话

./a.out -qws -font wenquanyi

虽然看起来就这几步，可以我真的是花了好久，网上看了好多，然后都有差，最后能实现我真是日了狗！昨天看了肖申克的救赎，希望还是要有的！！！！

贴上图片：

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