tdesktop/doc/building-cmake.md

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##Build instructions for GYP/CMake under Ubuntu 12.04
###Prepare
* Install git by command **sudo apt-get install git** in Terminal
* Install g++ by command **sudo apt-get install g++** in Terminal
You need to install g++ version 4.9 manually by such commands
* sudo add-apt-repository ppa:ubuntu-toolchain-r/test
* sudo apt-get update
* sudo apt-get install gcc-4.9 g++-4.9
* sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.9 21
* sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.9 21
###Prepare folder
Choose a folder for the future build, for example **/home/user/TBuild** There you will have two folders, **Libraries** for third-party libs and **tdesktop** (or **tdesktop-master**) for the app.
###Clone source code
By git in Terminal go to **/home/user/TBuild** and run
git clone https://github.com/telegramdesktop/tdesktop.git
###Prepare libraries
Install dev libraries
sudo apt-get install libexif-dev liblzma-dev libz-dev libssl-dev libappindicator-dev libunity-dev libicu-dev
####zlib 1.2.8
http://www.zlib.net/ > Download [**zlib source code, version 1.2.8, zipfile format**](http://zlib.net/zlib128.zip)
Extract to **/home/user/TBuild/Libraries**
#####Building library
In Terminal go to **/home/user/TBuild/Libraries/zlib-1.2.8** and run:
./configure
make
sudo make install
Install audio libraries
####Opus codec 1.1
Download [opus-1.1 sources](http://downloads.xiph.org/releases/opus/opus-1.1.tar.gz) from http://www.opus-codec.org/downloads, extract to **/home/user/TBuild/Libraries**, go to **/home/user/TBuild/Libraries/opus-1.1** and run
./configure
make
sudo make install
####FFmpeg
In Terminal go to **/home/user/TBuild/Libraries** and run
git clone git://anongit.freedesktop.org/git/libva
cd libva
./autogen.sh --enable-static
make
sudo make install
cd ..
git clone https://github.com/FFmpeg/FFmpeg.git ffmpeg
cd ffmpeg
git checkout release/3.1
sudo apt-get update
sudo apt-get -y --force-yes install autoconf automake build-essential libass-dev libfreetype6-dev libgpac-dev libsdl1.2-dev libtheora-dev libtool libva-dev libvdpau-dev libvorbis-dev libxcb1-dev libxcb-shm0-dev libxcb-xfixes0-dev pkg-config texi2html zlib1g-dev
sudo apt-get install yasm
./configure --prefix=/usr/local --disable-programs --disable-doc --disable-everything --enable-protocol=file --enable-libopus --enable-decoder=aac --enable-decoder=aac_latm --enable-decoder=aasc --enable-decoder=flac --enable-decoder=gif --enable-decoder=h264 --enable-decoder=h264_vdpau --enable-decoder=mp1 --enable-decoder=mp1float --enable-decoder=mp2 --enable-decoder=mp2float --enable-decoder=mp3 --enable-decoder=mp3adu --enable-decoder=mp3adufloat --enable-decoder=mp3float --enable-decoder=mp3on4 --enable-decoder=mp3on4float --enable-decoder=mpeg4 --enable-decoder=mpeg4_vdpau --enable-decoder=msmpeg4v2 --enable-decoder=msmpeg4v3 --enable-decoder=opus --enable-decoder=vorbis --enable-decoder=wavpack --enable-decoder=wmalossless --enable-decoder=wmapro --enable-decoder=wmav1 --enable-decoder=wmav2 --enable-decoder=wmavoice --enable-encoder=libopus --enable-hwaccel=h264_vaapi --enable-hwaccel=h264_vdpau --enable-hwaccel=mpeg4_vaapi --enable-hwaccel=mpeg4_vdpau --enable-parser=aac --enable-parser=aac_latm --enable-parser=flac --enable-parser=h264 --enable-parser=mpeg4video --enable-parser=mpegaudio --enable-parser=opus --enable-parser=vorbis --enable-demuxer=aac --enable-demuxer=flac --enable-demuxer=gif --enable-demuxer=h264 --enable-demuxer=mov --enable-demuxer=mp3 --enable-demuxer=ogg --enable-demuxer=wav --enable-muxer=ogg --enable-muxer=opus
make
sudo make install
####PortAudio 19
[Download portaudio sources](http://www.portaudio.com/archives/pa_stable_v19_20140130.tgz) from **http://www.portaudio.com/download.html**, extract to **/home/user/TBuild/Libraries**, go to **/home/user/TBuild/Libraries/portaudio** and run
./configure
make
sudo make install
####OpenAL Soft
In Terminal go to **/home/user/TBuild/Libraries** and run
git clone git://repo.or.cz/openal-soft.git
then go to **/home/user/TBuild/Libraries/openal-soft/build** and run
sudo apt-get install cmake
cmake -D LIBTYPE:STRING=STATIC ..
make
sudo make install
####OpenSSL
In Terminal go to **/home/user/TBuild/Libraries** and run
git clone https://github.com/openssl/openssl
cd openssl
git checkout OpenSSL_1_0_1-stable
./config
make
sudo make install
####libxkbcommon (required for Fcitx Qt plugin)
In Terminal go to **/home/user/TBuild/Libraries** and run
sudo apt-get install xutils-dev bison python-xcbgen
git clone https://github.com/xkbcommon/libxkbcommon.git
cd libxkbcommon
./autogen.sh --disable-x11
make
sudo make install
####Qt 5.6.2, slightly patched
In Terminal go to **/home/user/TBuild/Libraries** and run
git clone git://code.qt.io/qt/qt5.git qt5_6_2
cd qt5_6_2
git checkout 5.6
perl init-repository --module-subset=qtbase,qtimageformats
git checkout v5.6.2
cd qtimageformats && git checkout v5.6.2 && cd ..
cd qtbase && git checkout v5.6.2 && cd ..
#####Apply the patch
cd qtbase && git apply ../../../tdesktop/Telegram/Patches/qtbase_5_6_2.diff && cd ..
#####Building library
Install some packages for Qt (see **/home/user/TBuild/Libraries/qt5_6_2/qtbase/src/plugins/platforms/xcb/README**)
sudo apt-get install libxcb1-dev libxcb-image0-dev libxcb-keysyms1-dev libxcb-icccm4-dev libxcb-render-util0-dev libxcb-util0-dev libxrender-dev libasound-dev libpulse-dev libxcb-sync0-dev libxcb-xfixes0-dev libxcb-randr0-dev libx11-xcb-dev libffi-dev
In Terminal go to **/home/user/TBuild/Libraries/qt5_6_2** and there run
./configure -prefix "/usr/local/tdesktop/Qt-5.6.2" -release -force-debug-info -opensource -confirm-license -qt-zlib -qt-libpng -qt-libjpeg -qt-freetype -qt-harfbuzz -qt-pcre -qt-xcb -qt-xkbcommon-x11 -no-opengl -no-gtkstyle -static -openssl-linked -nomake examples -nomake tests
make -j4
sudo make install
building (**make** command) will take really long time.
####Google Breakpad
In Terminal go to **/home/user/TBuild/Libraries** and run
git clone https://chromium.googlesource.com/breakpad/breakpad
git clone https://chromium.googlesource.com/linux-syscall-support breakpad/src/third_party/lss
cd breakpad
./configure --prefix=$PWD
make
make install
####GYP and CMake
In Terminal go to **/home/user/TBuild/Libraries** and run
git clone https://chromium.googlesource.com/external/gyp
wget https://cmake.org/files/v3.6/cmake-3.6.2.tar.gz
tar -xf cmake-3.6.2.tar.gz
cd gyp
git apply ../../tdesktop/Telegram/Patches/gyp.diff
cd ../cmake-3.6.2
./configure
make
###Building Telegram Desktop
In Terminal go to **/home/user/TBuild/tdesktop/Telegram** and run
gyp/refresh.sh
To make Debug version go to **/home/user/TBuild/tdesktop/out/Debug** and run
make
To make Release version go to **/home/user/TBuild/tdesktop/out/Release** and run
make
You can debug your builds from Qt Creator, just open **CMakeLists.txt** from **/home/user/TBuild/tdesktop/out/Debug** and start debug.