DEB: use _base folder for a distro instead of specific distros (squeeze and maverick).

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

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+Qt for Debian README
+--------------------
+
+1. Preface
+
+This README is intended to give developers and users exact information
+about how the qt-x11-free package provided by TrollTech AS has been packaged
+for Debian in case you either want to faciliate it for development 
+of applications and libraries or plugins using the Qt class library. With 
+qt-x11-3.1.1, the Debian packages have been massively restructured to get 
+the most out of theoriginal Qt package and spit the contents up into 
+several packages so that they make the most sensefor several groups of 
+users; developers, application users, translators of Qt-based 
+applications and Debian packagers who are packaging applications developed 
+with Qt.2. 
+
+2. General Overview
+
+As Qt is a huge package that contains a complete environment for 
+developers, it needs to be split up into several packages that make it 
+easier for everyone else to handle it and not to require 
+unnecessary disk space for end-users. Additionally, Qt can be configured 
+in several ways - and therefore also used in several ways. Qt development 
+usually requires the environment variable QTDIR. As Debian is placing 
+libraries and header files in a quite specific filesystem order, this 
+usually breaks setting a single environment variable to meet the 
+requirements of packages. Therefore, symlinks are used to set up the system 
+to meet both, the Debian filesystem standard and the QTDIR variable. All of 
+Qt (so the QTDIR path) is available in /usr/share/qt3. If you need to set 
+QTDIR, do export QTDIR=/usr/share/qt3
+
+As far as the common build configuration goes, we note explicitely that the 
+Debian package of Qt will in very rare cases break the compilation (most 
+likely the linking) of applications on Debian which use Qt, in particular 
+utilizing styles in an incorrect way by deriving from one of the styles 
+that ship with Qt. In case you are a Debian packager and encounter 
+problems, contact Debian Qt/KDE Maintainers (debian-qt-kde@lists.debian.org).
+We will tell you why things don't work and what you should communicate on 
+with the programmers of your application that you are packaging. The build 
+configuration generally is intended to provide a Qt version that is as 
+small as possible in terms of the memory size it requires. Therefore, 
+everything inside Qt that can be compiled as plugins has been compiled that 
+way. This includes: 
+
+- imageformats: jpeg and mng - codecs (for languages like arab, japanese 
+  etc provided with Qt) 
+- sql drivers for databases (MySQL, ODBC and PostgreSQL)
+
+The only exception is the imageformat png which has been compiled built-in 
+due to the fact that there is literally no program that uses no icons at 
+all and icons are to be used preferrably in png format. The plugins are all 
+located under /usr/lib/qt3/plugins. This is also the install location you
+should choose as a package maintainer for 
+qt-plugins so the user doesn't have to customize his library path for 
+loading Qt plugins. The only exception is that KDE delivers a set of Qt 
+plugins as well (mainly styles and designer plugins); those are placed in 
+/usr/lib/trinity/plugins. 
+
+QMotif Extension: As this code is only available in commercial environments 
+(and produces a static library libqmotif.a anyway that those commercial 
+applications have to be linked against in addition to Qt), we left out all 
+header files of the libqt3-headers package that are belonging to this 
+QMotif extension.
+
+Oracle Database driver, Sybase & Microsoft SQL Server driver: Those drivers 
+are only available in a commercial version of Qt due to license 
+incompatibilities with the GPL. If you need to faciliate those drivers, 
+please visit http://www.trolltech.com and have a read at 
+http://doc.trolltech.com/3.0/sql-driver.html.
+  
+3. Packages (End-User) 
+
+The Qt built has been split up into several packages that allow for easy 
+installation for all types of users. The End-user usually only requires to 
+have the following packages installed to run an application that links 
+against Qt:
+
+Threaded version:libqt3-mt (the library libqt-mt.so.* and libqui.so.* for 
+loading designer-made user interfaces at runtime).
+
+Optionally depending on the program's requirements:
+
+libqt3-mt-odbc
+libqt3-mt-mysql
+libqt3-mt-psql 
+
+In addition to the libraries, it may make sense to install the program 
+qtconfig to customize the look and behaviorof Qt programs. If you have KDE 
+installed, the KDE control center will take this task automatically in most 
+cases. qtconfig is available in the package qt3-qtconfig.
+
+Also, Qt programs can make use of the online-help tool that ships with Qt, 
+the Qt Assistant. The Assistant can be installed with the package 
+qt3-assistant.
+
+Qt Configuration files
+----------------------
+Qt programs most often use QSettings to store their information in configuration
+files. With Qt 3.2, the new option --sysconfdir has been introduced that allows
+us to use /etc/qt3 as the system-wide location where qt-program specific global
+configuration files can go. If you're a programmer that wants to get familiar with
+that, please look at the examples, documentation and the code in designer or
+assistant as well as qtconfig.
+
+4. Packages (Package maintainers)
+
+In addition to the library, a package maintainer will require an additional 
+set of packages to compile a package that requires Qt. Depending on the 
+version of the qt library, you will require a different set of packages; 
+the most common option should be to make your application link against the 
+multi-threaded version (-mt).Packages necessary for compiling Qt 
+applications from source:
+
+libqt3-mt-dev   (use libqt3-dev for linking against -lqt, this package only 
+                contains the .so files and the header file for libqui.so)
+
+libqt3-headers  (header files for libqt and libqt-mt)
+ 
+qt3-dev-tools  (this package contains the tools uic and moc as well as 
+qmake, required for building Qt applications) 
+
+If, however, you encounter an older program not to compile with this set 
+read the FAQ at the end of this document.
+
+5. Packages (Developers)
+
+In addition to the packages that packagers require, a developer usually 
+will require the Qt API documentationas well as tools like the assistant, 
+linguist or designer. However, you should be fine with installing the API 
+documentation that you can browse with a webbrowser, optionally with the 
+assistant. They are available in /usr/share/doc/qt3-doc/html.
+For a regular development environment, install qt3-designer and qt3-doc.
+
+For faciliating Qt's extended environment to write plugins for the Qt 
+Designer or extend the Designer as well as utilizing the Qt Assistant by 
+calling it from within your program, install qt3-apps-dev, which contains
+the static libraries and header files required for this functionality.
+
+For Embedded Developers, the program qvfb (Qt Virtual Frambuffer) and 
+makeqpf (embedded fonts tool)have been packaged into 
+qt3-dev-tools-embedded. For developers that work on migrating their program 
+from any Qt version prior to Qt 3.x to the Qt 3.x platform you will find 
+additional tools in the qt3-dev-tools-compat.
+
+For using the QTranslator class and where to find the qm-file for qt as 
+well as where to place your translations,see the next section.
+
+If your program doesn't compile with those settings in case you have 
+started your project with Qt 1.x or 2.x, please read the FAQ section at the 
+end of this document.
+
+5. Packages (Translators)
+
+In order to translate a Qt program into any other language, the Qt 3 way to 
+do this is to let the developer create a ts-file containing the strings 
+that the program exposes on the user interface. The tools to create the 
+ts-file and to create the final qm (Q-message binary) file, lupdate and 
+lrelease, are included in qt3-dev-tools.The single translator that only 
+gets provided the ts file and has to return a translated ts file, it 
+is absolutely enough to install qt3-linguist; the package qt3-assistant can 
+be installed to access the online-help for the Qt Linguist itself.
+In case you're converting an application using Qt prior to Qt 3, you may 
+want to uitilize the qt3-dev-tools-compat which include the necessary tools 
+to convert older qm files to the new ts file standard.
+
+Locations of message translations: 
+
+Qt ships with a set of translations for the strings used inside Qt. Those 
+translations will be installed into /usr/share/qt3/translations (qm files 
+only), which equals $QTDIR/translations respectively 
+qInstallPath() + QString( "/translations" ). 
+
+The configure option --translationdir has been set to /usr/share/qt3/translations
+accordingly since it was introduced in Qt 3.2. 
+
+To correctly enable your program to display the translations to the Qt 
+library and to load the translation of the program itself, we currently 
+suggest to either install your translations along with any other data files 
+into/usr/share/<appname>/, translation files into the subdirectory 
+translations (that is /usr/share/<appname>/translations) The code that your 
+application should use to load the Qt translation will have to look like 
+the following:    
+
+int main( int argc, char **argv )
+    {
+        QApplication app( argc, argv );
+
+        // translation file for Qt
+        QTranslator qt( 0 );
+        qt.load( QString( "qt_" ) + QTextCodec::locale(), qInstallPath() + 
+        QString( "/translations" );
+        app.installTranslator( &qt );
+
+        // translation file for application strings
+        QTranslator myapp( 0 );
+        myapp.load( QString( "myapp_" ) + QTextCodec::locale(), "." ); 
+        // use a substitue for $prefix/share/appname/translations here      
+        app.installTranslator( &myapp );
+
+6. Frequently Asked Questions
+
+Using Qt for Debian as a developer or packager 
+----------------------------------------------
+
+Q: I want to compile a source package that utilizes qmake to build the 
+Makefiles. What do I need to do to makeit work ?
+
+A: qmake requires two environment variables to be set, QTDIR and QMAKESPEC. 
+To make it work, do
+export QTDIR=/usr/share/qt3
+export QMAKESPEC=linux-g++
+
+Then run qmake -o Makefile <projectfile>.pro
+
+After that, the Makefile is correctly created to build your application on 
+Debian. As a packager, export thosetwo variables in the rules file before 
+calling qmake.
+
+Q: I have an application that when linking gives me symbol referencing 
+errors to Q*Style. Why does my applicationnot link correctly ?
+
+A: The author of the program is using the styles that ship with Qt directly 
+instead of using the QStylePlugin interface.If you are the author of the 
+program, change your program to use QStylePlugin. If you are a packager, 
+write to theauthor of the program that he is assuming that the styles 
+shipped with Qt are built-in to the library which is not the case on Debian 
+and that he please should fix this and use QStylePlugin.
+
+Q: Where are all the examples and tutorials ? And how do I build them ?
+
+A: Qt ships with examples and tutorials; so does the Linguist and Designer. 
+The tutorials and examples are compressed tarballs which you can unpack with 
+tar -zxvf into your home directory. Change into the qt3-examples directory
+and run the provided ./build-examples script. All Qt examples and tutorials,
+including those for designer and the linguist, will be compiled. You will
+notice however, that those examples that inherit from style classes which
+are not built-in into Qt but configured as a plugin will not compile due
+to the fact that they can't link to the Qt library. 
+
+Q: I'm writing a pure Qt application and I want to ship it with a default 
+configuration file. Where does that global configuration file go if I make 
+use of the QSettings class ? 
+
+A: With qt-3.2.0, Trolltech has introduced a configure option to Qt called
+--sysconfdir which we intentionally set to /etc/qt3 similar to /etc/trinity for
+KDE programs. Install your application's system wide configuration file
+to /etc/qt3. 
+
+Q: I'm compiling a program and I have a compile error due to a missing 
+include. Why isn't that include not present in the Debian packages anymore 
+? It compiled with older versions of Debian packages of Qt !
+
+A: This may be due to two reasons: either the package still uses the old 
+includes from Qt 1.x or 2.x that got basically renamed by Trolltech due to 
+the naming convention. The filenames are now all following the scheme 
+
+ClassName -> classname.h. 
+
+Therefore, if you are the developer of the affected program, change your 
+sources according to this scheme. Qt ships with two tools, qt20fix and 
+qtrename140, to help developers migrate their API to the Qt 3 version, 
+which can help you in the transition upgrade to Qt 3.
+
+If you are affected by this as a packager, notify upstream to fix those 
+problems and in the meanwhile use libqt3-compat-headers as a build 
+dependency which includes the compatibility headers that just include the 
+right files from the new API again.
+
+Q: I have a question not covered by this FAQ and README file. Who should I 
+turn to ?
+
+A: Please turn to Debian Qt/KDE Maintainers (debian-qt-kde@lists.debian.org) 
+for any questions regarding Qt on Debian.
+
+ -- Ralf Nolden <nolden@kde.org>  Sun, 26 Jan 2003 20:39:19 +0100
+ -- Ralf Nolden <nolden@kde.org>  Mon,  1 Sep 2003 19:24:16 +0200
+ -- Modestas Vainius <modestas@vainius.eu> Fri, 22 Feb 2008 01:40:06 +0200