cling/tools/packaging

Cling Packaging Tool (CPT)

The Cling Packaging Tool is a command-line utility written in Python to build Cling from source and generate installer bundles for a wide range of platforms.

Cling maintains its own vendor clones of LLVM and Clang (part of ROOT's trunk) on which it is based. Due to some policy restrictions we do not distribute Cling on official repositories of Debian and others. Therefore this tool is the easiest way to build Cling for your favorite platorm and bundle it into an installer. If you want to manually compile Cling from source, go through the README of Cling or the build instructions here.

Below is a list of platforms currently supported by this tool:

• Ubuntu and distros based on Debian - DEB packages
• Windows - NSIS installers
• Distros based on Red Hat Linux (Fedora/Scientific Linux CERN) - RPM packages
• Virtually any UNIX-like platform which supports Bash - Tarballs.

###Requirements Before using this tool, make sure you have the required packages installed on your system. Detailed information on what and how to install is provided below, but the recommended (and much easier) way is to use the following command which performs the required checks automatically and displays useful suggestions too specific to your platform.

cd tools/packaging/
./cpt.py --check-requirements

Regardless of the platform and operating system, make sure your system has the latest and greatest version of Python 2 installed, v2.7 being the absolute minimum. CPT uses some features and modules which are not a part of older versions of Python.

All pre-complied binaries of Python ship with built-in support for SSL. However if the Python on your system was compiled by you manually, chances are that it doesn't have SSL support. This is very likely if you had performed a minimal installation of Scientific Linux CERN which doesn't include OpenSSL development package. In such a case, you should install openssl-devel, re-compile Python and configure will automatically link against the required libraries and produce a binary with SSL support.

####Ubuntu/Debian On Debian, Ubuntu or any other distro based on Debian which supports APT package manager, you can install all the required packages by:

sudo apt-get update
sudo apt-get install git g++ debhelper devscripts gnupg python

######Setting up: Make sure GnuPG is properly set up with your correct fingerprint. These credentials are needed to sign the Debian package and create Debian changelogs. On a build machine (Electric Commander), make sure the fingerprint is of the person who is supposed to sign the official uploads. You might also want to configure GnuPG to not ask for the passphrase while signing the Debian package.

The Ubuntu Packaging Guide contains documentation about creating a GPG key on an Ubuntu system.

To test if you have successfully set up your GnuPG key, use the following command:

gpg --fingerprint

Again, all these checks are performed by default when you launch CPT with -c option.

./cpt.py -c

####Windows CPT is meant to be executed on cmd.exe prompt. Make sure you have set the environment properly before continuing. Below is a list of required packages for Windows (Win32-x86):

[MSYS Git] for Windows [Python] for Windows Microsoft Visual Studio 11 (2012), with Microsoft Visual C++ 2012 [MSYS Git]:http://msysgit.github.io/ [Python]:https://www.python.org/

######Setting Up: Unlike other UNIX-like platforms, Windows requires you to follow some rules. Do not ignore this section unless you want CPT to fail mid-way with wierd errors. You should require these instructions only once.

• While installing the packages make sure the executable is in a path that doesn't contain spaces. For example, you should install Python in a path like

  C:\Python27
  

  rather than

  C:\Program Files (x86)\Python 2.7
  

• Path to all the required executables should be present in the Windows PATH environment variable.

• In case of MSYS Git, choose the option "Run Git from Windows Command Prompt" during installation.

A good way to check if everything is detected properly by the script is to run the following command:

cd tools/packaging/
./cpt.py --check-requirements

###Usage

cd tools/packaging/

usage: cpt.py [-h] [-c] [--current-dev CURRENT_DEV]
              [--last-stable LAST_STABLE] [--tarball-tag TARBALL_TAG]
              [--deb-tag DEB_TAG] [--rpm-tag RPM_TAG] [--nsis-tag NSIS_TAG]
              [--with-llvm-url WITH_LLVM_URL]
              [--with-clang-url WITH_CLANG_URL]
              [--with-cling-url WITH_CLING_URL] [--with-workdir WITH_WORKDIR]

Cling Packaging Tool

optional arguments:
  -h, --help            show this help message and exit
  -c, --check-requirements
                        Check if packages required by the script are installed
  --current-dev CURRENT_DEV
                        Package the latest development snapshot in one of
                        these formats: tar | deb | nsis
  --last-stable LAST_STABLE
                        Package the last stable snapshot in one of these
                        formats: tar | deb | nsis
  --tarball-tag TARBALL_TAG
                        Package the snapshot of a given tag in a tarball
                        (.tar.bz2)
  --deb-tag DEB_TAG     Package the snapshot of a given tag in a Debian
                        package (.deb)
  --rpm-tag RPM_TAG     Package the snapshot of a given tag in an RPM package
                        (.rpm)
  --nsis-tag NSIS_TAG   Package the snapshot of a given tag in an NSIS
                        installer (.exe)
  --with-llvm-url WITH_LLVM_URL
                        Specify an alternate URL of LLVM repo
  --with-clang-url WITH_CLANG_URL
                        Specify an alternate URL of Clang repo
  --with-cling-url WITH_CLING_URL
                        Specify an alternate URL of Cling repo
  --with-workdir WITH_WORKDIR
                        Specify an alternate working directory for CPT
  --make-proper MAKE_PROPER
                        Internal option to support calls from build system

###Overriding Default Variables There are a select number of variables which can be set to make CPT work differently. This eliminates the need to manually edit the script. You can overrride variables by using the following syntax: $ ./cpt.py --with-cling-url="http://github.com/ani07nov/cling" --current-dev=tar.

List of variables in CPT which can be overridden:

• CLING_GIT_URL

  • Specify the URL of the Git repository of Cling to be used by CPT
  • Default value: "http://root.cern.ch/git/cling.git"
  • Usage: ./cpt.py --with-cling-url="http://github.com/ani07nov/cling" --last-stable=deb

• CLANG_GIT_URL

  • Specify the URL of the Git repository of Clang to be used by CPT
  • Default value: "http://root.cern.ch/git/clang.git"
  • Usage: ./cpt.py --with-clang-url="http://github.com/ani07nov/clang" --last-stable=tar

• LLVM_GIT_URL

  • Specify the URL of the Git repository of LLVM to be used by CPT
  • Default value: "http://root.cern.ch/git/llvm.git"
  • Usage: ./cpt.py --with-llvm-url="http://github.com/ani07nov/llvm" --current-dev=tar

• workdir

  • Specify the working directory of CPT. All sources will be cloned, built and installed here. The produced packages will also be found here.
  • Default value: "~/ec/build"
  • Usage: ./cpt.py --with-workdir="/ec/build/cling" --current-dev=deb

License

Cling Packaging Tool is a part of Cling project and released under the same license terms of Cling. You can choose to license it under the University of Illinois Open Source License or the GNU Lesser General Public License. See LICENSE.TXT for details.