Quassel IRC

h1. Build Quassel on Linux

Step-by-step guide to compile the project utilizing the the classic toolchain in a terminal

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h2. Preparation of the build system

The build process needs 

 - the compiler and some tools like a linker, cmake, make 

 - the development libraries for KDE5, QT5, OpenSSL and zlib 

 - and git to manage the Quassel sourcecode

Under DEBIAN GNU/Linux Buster (10) the needed packages are installed as follows (execute as root):

<pre><code># apt-get update && apt-get install build-essential cmake extra-cmake-modules qtbase5-dev zlib1g-dev libqca-qt5-2-dev libboost-all-dev libqt5sql5-psql</code></pre>

(please insert commands for other distributions here)

h2. Managing the sourcecode

This task is done utilizing "git":http://en.wikipedia.org/wiki/Git_(software) while being logged in as a normal user.

The sourcecode is downloaded with 'git clone $URL' and stored in the directory ~/quassel.

<pre><code>$ cd ~ && git clone https://github.com/quassel/quassel.git</code></pre> 

The development of Quassel is an ongoing process, so from time to time you want

to update to the latest contributions with 'git pull origin' .

<pre><code>$ cd ~/quassel && git pull origin</code></pre>

h2. Compile!

After updating the sourcecode one can generate a new build.

Every build is done in its own directory enabling 

the return to the old build directory in the case of defeat.

<pre><code>$ cd quassel

$ mkdir build

</code></pre>

In the build directory the command 'cmake' generates the make-files (i.e. a dependency map for the compiler).

The options of cmake are described in the file ~/quassel/INSTALL in your source directory. Note: LINGUAS is an environment variable, not a cmake variable. You can optionally export it before running cmake.

<pre><code>$ cd ~/quassel/build

$ LINGUAS="de en_US" cmake ~/quassel -DWANT_CORE=ON -DWANT_QTCLIENT=ON -DWANT_MONO=ON -DWITH_KDE=ON -DWITH_OPENSSL=ON -DWITH_DBUS=ON -DWITH_PHONON=ON -DWITH_WEBKIT=ON

</code></pre>

Now the command 'make' generates the calls for the compiler

<pre><code>$ make </code></pre>

h2. Install with checkinstall

It is wise to prefer the default packagemanager of your system rather doing a 'make install'.

The installation will be done as root with checkinstall.

checkinstall generates a package (deb, rpm or tgz) for your packagemanager (apt, rpm or installpkg), 

that can later be removed easily and leaves a clean system.

checkinstall has options for several distributions: -D for Debian, -R for RPM, -S for Slackware.

When installing the package it asks interactive two questions, as shown in the following example:

example:

<pre><code>/home/user/quassel/build/#  checkinstall -D --pkgname quassel-all --pkgversion 0.5.0 --pkgrelease $(date +%y%m%d%H%M%S) make install</code></pre>

Output:

 Please enter a description of the package.

 Finish your description  with an empty line or EOF.

Input:

 >> [quassel-all contains quassel-core, quassel-client and quassel (mono).]                                           

 >> [enter]

Output:

 Das Paket wird entsprechend dieser Vorgaben erstellt:

  0 -  Maintainer: [ your.name@somedomain.test ]

  1 -  Summary: [ quassel-all contains core, client und quassel (mono). ]

  2 -  Name:    [ quassel-all ]

  3 -  Version: [ 0.5.0 ]

  4 -  Release: [ 091021181559 ]

  5 -  License: [ GPL ]

  6 -  Group:   [ checkinstall ]

  7 -  Architecture: [ i386 ]

  8 -  Source location: [ build_091021181559 ]

  9 -  Alternate source location: [  ]

 10 - Requires: [  ]

 11 - Provides: [ quassel-all ]

Input:

 [ just press [enter] to proceed generating the package]

The result: Quassel is installed. (here for Debian):

<pre><code>  Done. The new package has been installed and saved to

  /home/$(user)/quassel/build/quassel-all_0.5.0-091021103522_i386.deb

  You can remove it from your system anytime using:

  dpkg -r quassel-all

</code></pre>

h2. Draft of a buildscript

The repeating tasks of updating and compiling is done in the following buildscript:

<pre><code>#!/usr/bin/bash

# quick quassel buildscript (draft)

#

# initialize your local git-repository once with this command

# cd ~ && git clone https://github.com/quassel/quassel.git ~/quassel

#

# updating latest contributions:

cd ~/quassel

git pull origin

#

# make a new build directory with a suffix containing the date

export date=$(date +%y%m%d%H%M%S)

mkdir build_$date

#

# cmake: Optionen siehe ~/quassel/INSTALL

cd build_$date

cmake ~/quassel -DWANT_CORE=ON -DWANT_QTCLIENT=ON -DWANT_MONO=ON -DWITH_KDE=ON -DWITH_OPENSSL=ON -DWITH_DBUS=ON -DWITH_PHONON=ON -DWITH_WEBKIT=OFF -DLINGUAS="de en_US"

make

#

# avoid the classic 'make install', prefer generating a package with checkinstall

echo  please execute as root via copy & paste in the directory ~/quassel/build_$date 

echo  first to remove old package: dpkg -r quassel-all

echo  then to install new package: checkinstall -D --pkgname quassel-all --pkgversion 0.5.0 --pkgrelease $date make install

</code></pre>