Category Archives: 技术

Build Qt 4.7 with Symbian^3 on Linux and Mac OS X

Here I will only mention the difference between them:

1. Qt 4.7, please wait a while for the merging of 7c499bcfbf7f9c52b3d6523fea8396bd4ab7252e.

git checkout -b 4.7 origin/4.7

2. You could enable the webkit which is inside of 4.7, then the configure line should be like:

~/qt/qt/configure -developer-build -opensource -confirm-license -xplatform symbian-gcce -webkit -fast -silent -nomake examples -nomake demos -nomake tools -nomake tests -qtlibinfix _liang

And for QtWebKit package:

cd ~/build/s3_gcce/src/3rdparty/webkit/WebCore
make sis
copy ~/build/s3_gcce/lib/QtWebKit_liang.sis toyourphone

For the demo browser application:

cd ~/qt/work/demos/embedded/anomaly
make sis
copy anomaly.sis toyourphone

3. Install the above Qt_liang.sis, QtWebKit_liang.sis, analogclock.sis and anomaly.sis, and enjoy them.

Launch it at “QtExamples”->”analogclock”.
Launch it at “QtDemos”->”anomaly”.

Build Qt 4.8 with Symbian^3 on Linux and Mac OS X

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Build Qt 4.8 with Symbian^3 on Linux and Mac OS X

Kudos to Kristian Amlie and Thomas Zander for the “make file build system”.

1. OS:

Linux – mine is 2.6.38-8-generic x86_64
Mac OS X – mine is 10.6.8 64bit

2. Symbian^3

NOTE: Looks like Qt is still not the 1st-priority citizen in the Symbian^3 SDKs world, the reason why I say like that is this task, it means that you cannot use any version of Symbian^3 (public) SDKs to build Qt libraries from source. Details in the comment. Then we use the Symbian^3 PDK 3.0.4 for now. I am not sure how long this mirror service will be available there, you’d better backup those files by yourself.

Symbian^3 PDK 3.0.4

Please download binaries_armv5_lib.7z.zip, binaries_armv5_udeb.7z.zip, binaries_armv5_urel.7z.zip, binaries_epoc.7z.zip, binaries_epoc_sdk.7z.zip, binaries_prebuilt.7z.zip, tools_epoc.7z.zip at least.

cd ~
mkdir -p symbian-sdks/pdk304
cd symbian-sdks/pdk304
7z x abovefiles
export EPOCROOT=~/symbian-sdks/pdk304/ //set env for EPOCROOT

The patch for Symbian^3 PDK 3.0.4 is here.

3. Wine

NOTE: The reason for installing wine is we are using the Symbian tools build on Windows, such as rcomp, makesis and many others.

Linux(Debian/Ubuntu): sudo apt-get install wine1.2
Mac OS X: Install wine 1.1.44, and upgrade it to 1.2

Add wine into path
export PATH=/Applications/Wine.app/Contents/Resources/bin:$PATH //for Mac OS X

4. Compilers:

Linux: RVCT 2.2(need commercial license) or GCCE 4.4.1(Symbian ADT Sourcery G++ Lite 4.4-172 for ARM SymbianOS)
Mac OS X: GCCE 4.4.1(Symbian ADT Sourcery G++ Lite 4.4-172 for ARM SymbianOS), after installed to default path, mv /Applications/CodeSourcery/Sourcery G++ Lite/ /Applications/CodeSourcery/Sourcery_G++_Lite. NOTE: need to remove those spaces in the path of compiler

Add compiler path into PATH:
export PATH=/Applications/CodeSourcery/Sourcery_G++_Lite/bin:$PATH

5. Qt 4.8

NOTE: better to use ea7ed6b27301a4834b1bfe0ad4e6e58462647d3e and later.

cd ~
mkdir qt
git clone -n git://gitorious.org/qt/qt.git qt
cd qt
git checkout -b 4.8 origin/4.8

6. Build it

cd ~
mkdir build
cd build
mkdir s3_gcce // this is for the GCCE case, or s3_armcc for RVCT 2.2 case
cd s3_gcce
~/qt/qt/configure -developer-build -opensource -confirm-license -xplatform symbian-gcce -no-webkit -fast -silent -nomake examples -nomake demos -nomake tools -nomake tests -qtlibinfix _liang // this is for GCCE case, or “-xplatform symbian-armcc” for RVCT 2.2 case
make -j8 // maybe fail at somewhere, then just try “cd src;make -j1” finish it
cd src/s60installs
make sis
cd ~/build/s3_gcce/lib
cp Qt_liang.sis toyourphone
cd ~/qt/qt/examples/widgets/analogclock
~/build/s3_gcce/bin/qmake
make sis
copy analogclock.sis toyourphone

7. Install your own build Qt libraries and application

Goto “Office”->”File Manager”, manually install Qt_liang.sis and analogclock.sis

8. Run your appliation

Launch it at “QtExamples”->”analogclock”. Enjoy it!

Known issues or other topics:
1. There is still some issue to build qtwebkit which the one inside of qt 4.8 or from qtwebkit git repo directly. If I got solution, I will let you know.
2. Mabye write something about runonphone on Linux and Mac OS X, it is a very good tool to test qt applications.

Qt中的一些全局测试用例

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近期工作中接触过的，觉得很有意义。

目前这些测试用例都还在在$QTDIR/tests/auto下：

bic
说明：利用g++的-fdump-class-hierarchy参数生成的类信息数据和VTable数据检查二进制兼容性。对于库来说很重要。gen.sh对已发布的版本生成历史数据，然后调用g++ -fdump-class-hierarchy生成当前版本数据再进行比较。只要是支持g++的平台都可以检测。

compilerwarnings
说明：tst_CompilerWarnings::warnings()中对几种编译器的警告进行了检测。

headers
说明：tst_Headers::licenseCheck()中对所有源文件进行协议检查。tst_Headers::privateSlots()中对所有头文件检查了私有槽必须含有“_q_”。tst_Headers::macros()对所有头文件检查了宏。

symbols
说明：利用nm检查库中函数名和全局变量。tst_Symbols::prefix()中利用nm -g -C -D –format=posix –defined-only对库中的函数名称的前缀进行检查。tst_Symbols::globalObjects()中利用nm -C –format=posix对库中的全局静态对象进行检测，应该是不能有的。

原来挪威在计算机历史上还是很强的

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在挪威工作前后，知道这里有原Fast Search，现Microsoft的一个子公司、Opera和原Trolltech，现Qt, Nokia。加上瑞典的MySQL，被Sun, Oracle依次收购。只是觉得北欧在计算机领域还是有一席之地的。

最近在看Cocoa Programming Developer’s Handbook，提到了Simula对C++影响很大，才知道Simula竟然是挪威制造。

一个本科实习生的毕业论文

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QCOMPARE(HTML5, QML) — Nokia,Qt一个本科实习生的毕业论文

QCOMPARE(HTML5, QML)

A comparison of UI development technologies.
Casper van Donderen

已经获得作者同意对外发布

想想自己本科时做的东西，就太没意义了

体会了一下Snow Leopard的一个开发bug

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终于在公司搞到了一台旧的iMac 5.1, Intel Core 2 Duo 2.0 GHz/ 2G DDR2 667 MHz。

装上了Snow Leopard和官方发布的Qt 4.7.0 Beta 2和Qt Creator 2.1快照版，想debug进Qt库，竟然不成，咨询了公司内外的Mac开发朋友，原来我遇到了Apple的bug。

DYLD_IMAGE_SUFFIX=_debug makes application crash on Mac OS X – Snow Leopard
DYLD_IMAGE_SUFFIX causing havoc on Mac OS X Snow Leopard

而且变态的Apple自己的bug tracker还是封闭的，只有号码，看不到具体情况。

最后的解决办法是：
cd /usr/lib sudo mv libSystem.B_debug.dylib libSystem.B_debug.dylib.bak sudo mv libmx.A_debug.dylib libmx.A_debug.dylib.bak

之前还以为/Developers/SDKs/MacOSX10.6.sdk/usr/lib的有效呢。

BTW，学习了OS X下的ldd就是otool。

其它参考文档：
Technical Note TN2124: Mac OS X Debugging Magic

2010年7月30日注：升级到XCode 3.2.3后，依然崩溃。

Windows 7 Home Basic的一些知识

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今天才发现Windows 7 Home Basic这东西有激活地域限制并且没有64位版本。

Win7 Home Basic没有提供64位安装盘

并且只在Emerging Markets销售，通俗的说可以理解为像DVD一样有中国区和欧美区之分。

看来想在挪威使用国内的Windows 7 Home Basic是不太现实了。

How to support your own type in QVariant

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#include &lt;QCoreApplication&gt;
#include &lt;QVariant&gt;
#include &lt;QString&gt;

struct MyStruct
{
    int a;
    double b;
    QString c;
};

struct MyPowerStruct
{
    int a;
    double b;
    MyStruct c;
};

Q_DECLARE_METATYPE(MyStruct)
Q_DECLARE_METATYPE(MyPowerStruct)

int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);
    MyStruct v01 = { 1, 5.0, QString("Nokia Qt") };
    QVariant var0;
    var0.setValue(v01);
    MyStruct v02 = var0.value();
    MyPowerStruct v11 = { 10, 0.5, {1, 5.0, QString("Nokia Qt") } };
    QVariant var1;
    var1.setValue(v11);
    MyPowerStruct v12 = var1.value();
    return 0;
}

#include <QCoreApplication>

#include <QVariant>

#include <QString>

struct MyStruct

{

int a;

double b;

QString c;

};

struct MyPowerStruct

{

int a;

double b;

MyStruct c;

};

Q_DECLARE_METATYPE(MyStruct)

Q_DECLARE_METATYPE(MyPowerStruct)

int main(int argc, char *argv[])

{

QCoreApplication app(argc, argv);

MyStruct v01 = { 1, 5.0, QString("Nokia Qt") };

QVariant var0;

var0.setValue(v01);

MyStruct v02 = var0.value();

MyPowerStruct v11 = { 10, 0.5, {1, 5.0, QString("Nokia Qt") } };

QVariant var1;

var1.setValue(v11);

MyPowerStruct v12 = var1.value();

return 0;

}

Reference:
Qt 4.6 Documentation: Q_DECLARE_METATYPE

Git中创建空白branch的方法

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因为工作需要，要在一个git repo中创建一个空白的branch，就是和其它branch以及revision没有任何关系的branch，公司的git master（一共就两个）帮我搜了搜找到了答案：

Git Community Book: Creating New Empty Branches

git symbolic-ref HEAD refs/heads/newbranch rm .git/index # windows: del .gitindex git clean -fdx #do work# git add your files git commit -m 'Initial commit'

Build Qt with S60 5.0 Public SDK(2nd version)

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Build Qt with S60 5.0 Public SDK(2nd version)

Platform: Windows XP with SP3(now we only support Qt/S60 on it.)

1. SYMBIAN Development Environment

For downloading the packages, you need to register an account in the forum of Nokia,
http://www.forum.nokia.com/main/registration/registration.html

1-1. Carbide.C++
http://www.forum.nokia.com/Tools_Docs_and_Code/Tools/IDEs/Carbide.c++/
http://sw.nokia.com/id/7710eba7-4da7-4ddc-a52a-53b506cadb4a/Carbide_cpp_v2_0_en.exe

Carbide.C++ 2.0
Carbide_cpp_v2_0_en.exe 203MB

1-2. S60 Platform SDKs for Symbian OS, for C++
http://www.forum.nokia.com/info/sw.nokia.com/id/ec866fab-4b76-49f6-b5a5-af0631419e9c/S60_All_in_One_SDKs.html
http://sw.nokia.com/id/577ad48d-290c-4bb5-8bdf-779ea8a5bc6c/S60_5th_Edition_SDK_v1_0_en.zip

S60 Platform SDKs for Symbian OS, for C++, 5th Edition
S60_5th_Edition_SDK_v1_0_en.zip 622MB

1-3. Open C/C++ Plug-in
http://www.forum.nokia.com/info/sw.nokia.com/id/91d89929-fb8c-4d66-bea0-227e42df9053/Open_C_SDK_Plug-In.html
http://sw.nokia.com/id/fbe59b85-a621-404b-94d7-94ca818e576a/s60_open_c_cpp_plug_in_v1_6_en.zip

Open C/C++ Plug-in 1.6
s60_open_c_cpp_plug_in_v1_6_en.zip 34MB

2. Installation
Please install following packages as default path.

Install ActivePerl-5.6.1.638-MSWin32-x86.msi.
Install Java SE Development Kit (JDK), JDK 6 Update 16, jdk-6u16-windows-i586.exe
Install Carbide.C++.
After installed Carbide.C++, please download x86Tools_3.2.5_Symbian_b482_qt.zip. Please extract all files in it, and copy or move them to overwrite this folder, C:Program FilesNokiaCarbide.c++ v2.0x86Build.
Please run this, Start->Carbide.c++ v2.0->Configure environment for WINSCW command line.
And you also need to use Git to get Qt from Qt Git Repo, better to download this version of Git.

Please also make sure the path of our perl(default: C:Perlbin) should be before the perl in git(default: C:Program FilesGitbin) in PATH.

For Host Tools:
For MinGW user, please download MinGW-5.1.4.exe(Note: here the 5.1.4 is the version of installer, the compiler version is 3.4.5.), use it install g++ and make at least. And please add the env for MinGW, C:MinGWbin, at the beginning of the PATH.
For Microsoft Visual C++ Express Edition user, please download the vcsetup.exe and install 2008 with SP1.

For Device:
You need to install RVCT 2.2, we are using “Build 683”. You can use RVCT to build Qt libraries and applications which could running on S60 devices.
You can also install the “CSL Arm Toolchain”, if you forgot it, you can find it in Start->S60 Developer Tools->5th Edition SDK->v1.0->Tools->CSL Toolchain (GCCE) Install. You can use GCCE to build Qt applications with pre-build Qt libraries, and run your Qt applications on devices.

3. Build Qt with S60 5.0 Public SDK

For MinGW user, just open a Windows Command Prompt.
For VC2008EE user, please open Visual Studio 2008 Command Prompt.

C:
mkdir git
cd C:git
git clone -n git://gitorious.org/qt/qt.git
cd qt
git checkout -b 4.6 origin/4.6
set PATH=C:gitqt-s60bin;%PATH%

For MinGW user:
configure -platform win32-g++ -xplatform symbian-abld -qt-sql-sqlite -system-sqlite -no-script

For VC2008EE user:
configure -platform win32-msvc2008 -xplatform symbian-abld -qt-sql-sqlite -system-sqlite -no-script

make debug-winscw // for emulator
make release-armv5 // for devices arvm5

4. Build Examples

cd C:gitqtexampleswidgetsanalogclock
qmake
make debug-winscw // for emulator
make release-armv5 // for devices arvm5
make release-gcce // for devices gcce

5. Run

In Emulator:
C:S60devicesS60_5th_Edition_SDK_v1.0epoc32releasewinscwudebepoc.exe
“Menu”(or click the middle one of the 3 buttons)->QtExamples->analogclock

In Device:
createpackage C:gitqtsrcs60installsQt_for_S60_template.pkg release-armv5 // create Qt install package, it locates in C:gitqtsrcs60installsqt_for_s60_release-armv5.sis
createpackage C:gitqtexampleswidgetsanalogclockanalogclock_template.pkg release-armv5 // create analogclock armv5 install package, it locates in C:gitqtexampleswidgetsanalogclockanalogclock_release-armv5.sis
createpackage C:gitqtexampleswidgetsanalogclockanalogclock_template.pkg release-gcce // create analogclock gcce install package, it locates in C:gitqtexampleswidgetsanalogclockanalogclock_release-gcce.sis

Before you install Qt install package, you should also insall following packages:
pips_s60_1_6_SS.sis
openc_ssl_s60_1_6_SS.sis
STDCPP_s60_1_6_SS.sis

You can find them in C:S60devicesS60_5th_Edition_SDK_v1.0nokia_pluginopencs60opencsis and C:S60devicesS60_5th_Edition_SDK_v1.0nokia_pluginopencpps60opencppsis.

NOTE: If you are using virtual machine, please do not use Windows Remote Desktop to connect it. The default audio driver for it will cause S60 Emulator crash.