qtopia-opensource-4.3.0 在x86编译，编写hello小程序，运行在qvfb上 [复制链接]

qtopia-opensource-4.3.0 x86环境下程序开发


关于移植qtopia4到开发板上的文章已经很多了，但是还是经常开到有些人对qtopia的本地开发不明白（包括我自己），尤其是从原来版本过度到4版本，很多东西不一样了所以不知道如何入手，我这里将我的入门过程记录如下希望能给大家一些帮助，如有不对的地方请大家及时提出，以免耽误别人的学习，下面的这些内容存属我个人的操作经过记录。


系统：虚拟机安装 fedora 8
          标准的c++开发环境
        gcc 4.1.2
        标准的x86编译过程。

1.下载 qtopia，这里我用的是：qtopia-opensource-src-4.3.0.tar.gz 你可以到trolltech 的网站上下载，这个好像我是从 www.qtch.org 的embedded/qtopia 版上下载的。
2. 用root权限添加一个普通用户 devqt。因为qpe是不能在超级用户下执行的（这个应该是是我当时通过root用户执行时系统有提示，当时没有深究，这里谢谢shiroki给我的提醒，我会测试一下，谢谢shiroki）。然后用devqt登录系统。将下载的qtopia-opensource-src-4.3.0.tar.gz放到 devqt用户的目录下。后面的操作如没有特别说明都是在devqt用户环境下执行的。
3.解压文件到devqt下（实际路径是/home/devqt）:$tar zxvf qtopia-opensource-src-4.3.0.tar.gz .4.建立一个编译用目录：$mkdir  debugx86build
5.切换到debugx86build目录：$cd debugx86buld
6.执行configure进行配置：$echo yes|../qtopia-opensource-src-4.3.0/configure -debug -profile
7.configure完成后执行 make：$make  #这一步用时比较长，当然和机器配置有关。
8.如果没有错误，完成后就可以执行：$make install  #其实configure完成后系统会提示你下一步怎么做的。
9. 好了可以开始我们的qtopia本地程序的编译了，建立hello例程：$mkdir  -p /home/devqt/hello
10. 编写一个hello.cpp的程序：$vim hello.cpp    #代码内容如下：

#include <QApplication>
#include <QPushButton>

int main(int argc, char *argv[])
{
QApplication app(argc,argv);

QPushButton hello("Hello world");

QObject::connect(&hello, SIGNAL(clicked()), &app, SLOT(quit()));

hello.show();
return app.exec();
}

11. 到hello目录下执行：$/home/devqt/debugx86buld/qtopiacore/target/bin/qmake -project      #生成pro文件，这里因为要生成可以在qvfb里执行的程序，所以要用target目录下的qmake。
12.  然后执行：$/home/devqt/debugx86buld/qtopiacore/target/bin/qmake    ＃生成Makefile文件
13.  最后执行：$make        ＃如果没有错误的话。就等着执行了。
14.  开启qvfb：$/home/devqt/debugx86buld/bin/qvfb &15.  运行hello：$hello -qws        #这里一定要加 -qws，
16.  ok，现在可以在qvfb里看见你的小程序吗？如果你的环境和我的一样的话，你应该是看不到的，看看系统的提示信息，说什么？我的是提示 /home/devqt/debugx86buil/qtopiacore/target/lib/fonts/ 找不到。$cp -R /home/devqt/debugx86build/image/lib/fonts //home/devqt/debugx86build/qtopiacore/target/lib
17.  现在再执行就可以看到结果了。

好了整个过程就是这样的。希望大家共同完善Qtopia4的程序开发过程。
补充以下对debugx86build中几个目录的说明：

bin：最重要的是qvfb，其他应该是编译过程中用到的文件，一半是win下的程序。
dimage：
image：这个就不用说了，你编译了那么长时间不就是为了这个吗？。
qtopiacore/host:这是编译在非qvfb上运行的工具和文件。
qtopiacore/target:这个是编译要在qvfb上运行的工具和文件。你可以分别用这两个目录下的qmake编译hello程序，然后执行就可以看出结果了。

好了就写这些！
再次重申，不对的地方请大家批评指正，千万别做人身攻击的谩骂，
谢谢！

感觉很不好用啊，尤其是做界面的时候，我用4.2.0

“I followed you step, but when i input gmake -project, it show me the following information. Do you know how and why?
” 这里用的不是gmake  而应该是qmake。

有个小问题。文章中说qpe不能在root用户权限下运行，不知道楼主是怎么得到的这个结论呢。事实上有些功能不用root用户就不能用了哦，比如modem， 普通用户是不能打开串口设备的。

I followed you step, but when i input gmake -project, it show me the following information. Do you know how and why?


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很多人都是在摸索着学习，希望那些已经很流畅的进行qtopia4开发人的高人可以给些总结性的帮助。