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243 lines
8.5 KiB
Markdown
243 lines
8.5 KiB
Markdown
# Building from source using Cerbero
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> ![Warning] This section is intended for advanced users.
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> </p>
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> </td>
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## Build requirements
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The GStreamer SDK build system provides bootstrapping facilities for all
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platforms, but it still needs a minimum base to bootstrap:
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- python >= 2.6 and python's `argparse` module, which is already
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included in python2.7.
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- git
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### Windows users
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Cerbero can be used on Windows using the Msys/MinGW shell (a Unix-like
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shell for Windows). There is a bit of setup that you need to do before
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Cerbero can take control.
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You need to install the following programs:
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- [Python 2.7]
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- [Git] (Select the install option "Checkout as-is, Commit as-is" and
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install it in a path without spaces, eg: c:\Git)
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- [Msys/MinGW] (Install it with all the options enabled)
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- [CMake] (Select the option "Add CMake in system path for the
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current user")
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- [Yasm] (Download the win32 or win64 version for your platform, name
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it `yasm.exe`, and place it in your MinGW `bin` directory,
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typically, `C:\MinGW\bin`)
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- [WiX 3.5]
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- [Microsoft SDK 7.1] (Install the SDK samples and the Visual C++
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Compilers, required to build the DirectShow base classes. Might need
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installing the .NET 4 Framework first if the SDK installer doesn't
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find it)
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- [Windows Driver Kit 7.1.0]
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Your user ID can't have spaces (eg: John Smith). Paths with spaces are
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not correctly handled in the build system and msys uses the user ID for
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the home folder.
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Cerbero must be run in the MinGW shell, which is accessible from the
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main menu once MinGW is installed.
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The last step is making `python` and `git` available from the shell, for
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which you will need to create a `.profile` file. Issue this command from
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within the MinGW shell:
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`echo "export PATH=\"\$PATH:/c/Python27:/c/Git/bin\"" >> ~/.profile`
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Using the appropriate paths to where you installed `python` and `git`
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(Note that inside the shell, / is mapped to c:\Mingw\msys\1.0 )
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### OS X users
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To use cerbero on OS X you need to install the "Command Line Tools" from
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XCode. They are available from the "Preferences" dialog under
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"Downloads".
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### iOS developers
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If you want to build the GStreamer-SDK for iOS, you also need the iOS
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SDK. The minimum required iOS SDK version is 6.0 and is included in
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[XCode] since version 4.
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## Download the sources
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To build the GStreamer SDK, you first need to download **Cerbero**.
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Cerbero is a multi-platform build system for Open Source projects that
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builds and creates native packages for different platforms,
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architectures and distributions.
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Get a copy of Cerbero by cloning the git repository:
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git clone git://anongit.freedesktop.org/gstreamer/cerbero
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Cerbero can be run uninstalled and for convenience you can create an
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alias in your `.bashrc` file*. *If you prefer to skip this step,
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remember that you need to replace the calls to `cerbero` with
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`./cerbero-uninstalled` in the next steps.
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echo "alias cerbero='~/git/cerbero/cerbero-uninstalled'" >> ~/.bashrc
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## Setup environment
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After Cerbero and the base requirements are in place, you need to setup
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the build environment.
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Cerbero reads the configuration file `$HOME/.cerbero/cerbero.cbc` to
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determine the build options. This file is a python code which allows
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overriding/defining some options.
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If the file does not exist, Cerbero will try to determine the distro you
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are running and will use default build options such as the default build
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directory. The default options should work fine on the supported
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distributions.
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An example configuration file with detailed comments can be found [here]
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To fire up the bootstrapping process, go to the directory where you
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cloned/unpacked Cerbero and type:
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cerbero bootstrap
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Enter the superuser/root password when prompted.
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The bootstrap process will then install all packages required to build
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the GStreamer SDK.
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## Build the SDK
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To generate the SDK, use the following command:
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cerbero package gstreamer-1.0
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This should build all required SDK components and create packages for
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your distribution at the Cerbero source directory.
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A list of supported packages to build can be retrieved using:
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cerbero list-packages
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Packages are composed of 0 (in case of a meta package) or more
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components that can be built separately if desired. The components are
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defined as individual recipes and can be listed with:
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cerbero list
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To build an individual recipe and its dependencies, do the following:
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cerbero build <recipe_name>
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Or to build or force a rebuild of a recipe without building its
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dependencies use:
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cerbero buildone <recipe_name>
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To wipe everything and start from scratch:
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cerbero wipe
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Once built, the output of the recipes will be installed at the prefix
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defined in the Cerbero configuration file `$HOME/.cerbero/cerbero.cbc`
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or at `$HOME/cerbero/dist` if no prefix is defined.
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### Build a single project with the SDK
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Rebuilding the whole SDK is relatively fast on Linux and OS X, but it
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can be very slow on Windows, so if you only need to rebuild a single
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project (eg: gst-plugins-good to patch qtdemux) there is a much faster
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way of doing it. You will need to follow the steps detailed in this
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page, but skipping the step "**Build the SDK**", and installing the
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SDK's development files as explained in [Installing the SDK].
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By default, Cerbero uses as prefix a folder in the user directory with
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the following schema \~/cerbero/dist/$platform\_$arch, but for the SDK
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we must change this prefix to use its installation directory. This can
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be done with a custom configuration file named *custom.cbc*:
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# For Windows x86
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prefix='/c/gstreamer/1.0/x86/'
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# For Windows x86_64
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#prefix='/c/gstreamer/1.0/x86_64'
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# For Linux
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#prefix='/opt/gstreamer'
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# For OS X
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#prefix='/Library/Frameworks/GStreamer.framework/Versions/1.0'
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The prefix path might not be writable by your current user. Make sure
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you fix it before, for instance with:
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$ sudo chown -R <username> /Library/Frameworks/GStreamer.framework/
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Cerbero has a shell command that starts a new shell with all the
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environment set up to target the SDK. You can start a new shell using
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the installation prefix defined in *custom.cbc *with the following
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command:
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$ cerbero -c custom.cbc shell
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Once you are in Cerbero's shell you can compile new projects targeting
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the SDK using the regular build process:
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$ git clone -b sdk-1.0.31 git://anongit.freedesktop.org/gstreamer-sdk/gst-plugins-good; cd gst-plugins-good
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$ sh autogen.sh --disable-gtk-doc --prefix=<prefix>
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$ make -C gst/isomp4
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### Cross-compilation of the SDK
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Cerbero can be used to cross-compile the SDK to other platforms like
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Android or Windows. You only need to use a configuration file that sets
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the target platform, but we also provide a set of of pre-defined
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configuration files for the supported platforms (you will find them in
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the `config` folder with the `.cbc` extension
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#### Android
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You can cross-compile the SDK for Android from a Linux host using the
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configuration file `config/cross-android.cbc`. Replace all the previous
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commands with:
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cerbero -c config/cross-android.cbc <command>
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#### Windows
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The SDK can also be cross-compiled to Windows from Linux, but you should
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only use it for testing purpose. The DirectShow plugins cannot be
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cross-compiled yet and WiX can't be used with Wine yet, so packages can
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only be created from Windows.
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Replace all the above commands for Windows 32bits with:
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cerbero -c config/cross-win32.cbc <command>
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Or with using the following for Windows 64bits:
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cerbero -c config/cross-win64.cbc <command>
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#### iOS
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To cross compile for iOS from OS X, use the configuration file
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`config/cross-ios-universal.cbc`. Replace all previous commands with:
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cerbero -c config/cross-ios-universal.cbc <command>
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[Warning]: images/icons/emoticons/warning.png
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[Python 2.7]: http://www.python.org/getit/releases/2.7/
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[Git]: http://code.google.com/p/msysgit/downloads/list?q=full+installer+official+git
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[Msys/MinGW]: https://sourceforge.net/projects/mingw/files/Installer/mingw-get-inst/
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[CMake]: http://www.cmake.org/cmake/resources/software.htm
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[Yasm]: http://yasm.tortall.net/Download.html
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[WiX 3.5]: http://wix.codeplex.com/releases/view/60102
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[Microsoft SDK 7.1]: http://www.microsoft.com/en-us/download/details.aspx?id=8279
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[Windows Driver Kit 7.1.0]: http://msdn.microsoft.com/en-us/windows/hardware/hh852365
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[XCode]: https://developer.apple.com/devcenter/ios/index.action#downloads
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[here]: http://www.freedesktop.org/software/gstreamer-sdk/cerbero.cbc.template
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[Installing the SDK]: Installing+the+SDK.markdown
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