arcanis.me/_posts/2014-01-21-building-qutim-using-qt5.html

---
category: en
type: paper
layout: paper
tags: archlinux, linux, building, qutim
title: Building Qutim using Qt5
short: building-qutim-using-qt5
description: <a href="http://qutim.org">Qutim</a> is a multiprotocol and cross platform messenger. It is written on <code>CPP</code> using Qt library. The project is actively developed. In this paper I will say about building this package in Archlinux using Qt5 library (instead of Qt4 which is used in current AUR packages).
---
<h2><a name="problems" class="anchor" href="#problems"><span class="octicon octicon-link"></span></a>What's wrong?</h2>
<p align="justify">This package uses <a href="http://qt-project.org/wiki/qbs">qbs</a> for building, which is a bit strange IMHO. A package, which is necessary for building, is <a href="https://aur.archlinux.org/packages/qbs-git/">in AUR </a>. I recommend to use git version of the package. When I asked Andrea Scarpino (who maintains KDE and Qt packages into the official repos) about qbs, he told me "we will support it in time". And I agree with him, the project seems to be a little unstable.</p>

<h2><a name="prepare" class="anchor" href="#prepare"><span class="octicon octicon-link"></span></a>Prepare</h2>
<p align="justify">Install dependences. I had used <code>namcap</code>, so maybe I missed something:</p>
{% highlight bash %}
pacman -Sy --asdeps clang git libc++abi qt5-quick1 qt5-x11extras
yaourt -S --asdeps jreen-git qbs-git
{% endhighlight %}

<h3><a name="qbs" class="anchor" href="#qbs"><span class="octicon octicon-link"></span></a>qbs settings</h3>
<p align="justify">You may read about qbs <a href="http://qt-project.org/wiki/qbs">on the link</a> or see examples which are provides by the package. qbs uses configuration file that firstly you must create and secondly it is stored in your home directory. In theory a configuration file creating ((<code>~/.config/QtProject/qbs.conf</code>)) looks like this:</p>
{% highlight bash %}
qbs-setup-qt --detect
qbs-detect-toolchains
{% endhighlight %}
<p align="justify">Firstly we find Qt libraries. Then we find toolchains (such as compilers). And next we must insert a toolchain into Qt profile (for example, we need <code>clang</code> toolchain):</p>
{% highlight bash %}
sed 's/clang\\/qt-5-2-0\\/g' -i ~/.config/QtProject/qbs.conf
{% endhighlight %}
<p align="justify">And there are other ways. You may edit the file manually or use  <code>qbs-config-ui</code> or <code>qbs-config</code>.</p>
<p align="justify">So, we have created the configuration file and put it into build directory:</p>
{% highlight ini %}
[General]

[Qt]
filedialog=

[profiles]
clang\cpp\compilerName=clang++
clang\cpp\toolchainInstallPath=/usr/bin
clang\qbs\architecture=x86_64
clang\qbs\endianness=little
clang\qbs\toolchain=clang, llvm, gcc
gcc\cpp\compilerName=g++
gcc\cpp\toolchainInstallPath=/usr/bin
gcc\qbs\architecture=x86_64
gcc\qbs\endianness=little
gcc\qbs\toolchain=gcc
qutim\Qt\core\binPath=/usr/lib/qt/bin
qutim\Qt\core\buildVariant=release
qutim\Qt\core\config=shared, qpa, no_mocdepend, release, qt_no_framework
qutim\Qt\core\docPath=/usr/share/doc/qt
qutim\Qt\core\incPath=/usr/include/qt
qutim\Qt\core\libInfix=
qutim\Qt\core\libPath=/usr/lib
qutim\Qt\core\mkspecPath=/usr/lib/qt/mkspecs/linux-g++
qutim\Qt\core\namespace=
qutim\Qt\core\pluginPath=/usr/lib/qt/plugins
qutim\Qt\core\qtConfig=minimal-config, small-config, medium-config, large-config, full-config, gtk2, gtkstyle, fontconfig, libudev, evdev, xlib, xcb-glx, xcb-xlib, xcb-sm, xrender, accessibility-atspi-bridge, linuxfb, c++11, accessibility, opengl, shared, qpa, reduce_exports, reduce_relocations, clock-gettime, clock-monotonic, mremap, getaddrinfo, ipv6ifname, getifaddrs, inotify, eventfd, system-jpeg, system-png, png, system-freetype, no-harfbuzz, system-zlib, nis, cups, iconv, glib, dbus, dbus-linked, openssl-linked, xcb, xinput2, alsa, pulseaudio, icu, concurrent, audio-backend, release
qutim\Qt\core\version=5.2.0
qutim\cpp\compilerName=clang++
qutim\cpp\toolchainInstallPath=/usr/bin
qutim\qbs\architecture=x86_64
qutim\qbs\endianness=little
qutim\qbs\toolchain=clang, llvm, gcc
{% endhighlight %}
<p align="justify"><a href="/resources/docs/qutim-qt5-git/qbs-qutim.conf">qbs-qutim.conf</a></p>

<h3><a name="patch" class="anchor" href="#patch"><span class="octicon octicon-link"></span></a>Patch for sources</h3>
<p align="justify">The first problem is <code>clang</code> (at least in Archlinux):</p>
{% highlight diff %}
diff -ruN qutim.orig/core/libqutim.qbs qutim/core/libqutim.qbs
--- qutim.orig/core/libqutim.qbs    2014-01-06 15:39:56.000000000 +0400
+++ qutim/core/libqutim.qbs 2014-01-06 15:44:54.502175067 +0400
@@ -75,7 +75,7 @@
         cpp.linkerFlags: {
             var flags = base;
             if (qbs.toolchain.contains("clang") && qbs.targetOS.contains("linux"))
-                flags = flags.concat("-stdlib=libc++ -lcxxrt");
+                flags = flags.concat("-lc++abi");
             return flags;
         }
 
{% endhighlight %}
<p align="justify">And the second one is Vk plugin:</p>
{% highlight diff %}
diff -ruN qutim.orig/protocols/vkontakte/vreen/vreen.qbs qutim/protocols/vkontakte/vreen/vreen.qbs
--- qutim.orig/protocols/vkontakte/vreen/vreen.qbs  2014-01-06 15:41:42.000000000 +0400
+++ qutim/protocols/vkontakte/vreen/vreen.qbs   2014-01-06 15:46:47.142178486 +0400
@@ -5,6 +5,7 @@
     property string vreen_qml_path: "bin"
     property string vreen_lib_path: "lib"
     property string vreen_libexec_path: "lib"
+    property string lib_path: "lib"
 
     property string vreen_version_major:  1
     property string vreen_version_minor: 9
{% endhighlight %}
<p align="justify"><a href="/resources/docs/qutim-qt5-git/qutim-qbs-1.1.patch">qutim-qbs-1.1.patch</a></p>

<h3><a name="sources" class="anchor" href="#sources"><span class="octicon octicon-link"></span></a>Get sources</h3>
{% highlight bash %}
# clone repo
git clone https://github.com/euroelessar/qutim
# save qbs.conf
mkdir -p .config/QtProject
cp qbs-qutim.conf .config/QtProject/qbs.conf
# create build directory
mkdir build
# update submodules
cd qutim
git submodule update --init --recursive
# patch
cd ..
patch -p0 -i qutim-qbs-1.1.patch
{% endhighlight %}

<h2><a name="build" class="anchor" href="#build"><span class="octicon octicon-link"></span></a>Building</h2>
{% highlight bash %}
cd qutim
HOME=$(pwd) qbs -j $(nproc) -d ../build release profile:qutim
{% endhighlight %}
<p align="justify">I want to create a universal recipe for the building, thus we must set <code>$HOME</code> directory. Flag <code>-j</code> means number of jobs, <code>-d</code> means build directory, <code>release</code> means building type (debug, release), <code>profile</code> is used profile, which is described in the configuration file.</p>

<h2><a name="install" class="anchor" href="#install"><span class="octicon octicon-link"></span></a>Installation</h2>
{% highlight bash %}
HOME=$(pwd) sudo qbs install -d ../build --install-root "/usr" profile:qutim
{% endhighlight %}
<p align="justify">We must set root directory (<code>--install-root</code>), because without this option the package will be installed into <code>/</code> (<code>/bin</code> and <code>/lib</code>).</p>

<h2><a name="pkgbuild" class="anchor" href="#pkgbuild"><span class="octicon octicon-link"></span></a>PKGBUILD</h2>
{% highlight bash %}
pkgname=qutim-qt5-git
_gitname=qutim
pkgver=v0.3.1.967.gc56d61e
pkgrel=1
pkgdesc="Multiplatform instant messenger (qt5 build). Git version"
arch=('i686' 'x86_64')
url="http://qutim.org"
license=('LGPL' 'GPL3')
depends=('jreen-git' 'libc++abi' 'qt5-quick1' 'qt5-x11extras')
makedepends=('clang' 'qbs')
conflicts=(qutim-0.2_ru-git, qutim-0.3-git, qutim-stable, qutim-git)
source=("${_gitname}::git+https://github.com/euroelessar/qutim.git"
        "qutim-qbs-1.1.patch"
        "qbs-qutim.conf")
md5sums=('SKIP'
         '12c30176729a5230ff7e6effbb1b37f8'
         '40f096b269eb00b040035591fce8e259')

pkgver() {
  cd "${_gitname}"
  git describe --always | sed 's|-|.|g'
}

prepare() {
  # FIXME: dirty hack
  mkdir -p "${srcdir}/.config/QtProject"
  cp "${srcdir}/qbs-qutim.conf" "${srcdir}/.config/QtProject/qbs.conf"
  # create build directory
  if [[ -d ${srcdir}/build ]]; then
    rm -rf "${srcdir}/build"
  fi
  mkdir "${srcdir}/build"
  
  cd "${_gitname}"
  # update modules
  git submodule update --init --recursive
  # fix qbs build
  cd ..
  patch -p0 -i "${srcdir}/qutim-qbs-1.1.patch"
}

build() {
  cd "${_gitname}"
  HOME="${srcdir}" qbs -j $(nproc) -d ../build release profile:qutim
}

package() {
  cd "${srcdir}/${_gitname}"
  HOME="${srcdir}" qbs install -d ../build --install-root "${pkgdir}/usr" profile:qutim
}
{% endhighlight %}
<p align="justify"><a href="/resources/docs/qutim-qt5-git/PKGBUILD">PKGBUILD</a></p>