Comprehensive Installation

There are 4 main ways you can install ScanCode.

  • Installation as an Application: Downloading Releases

    The recommended method for installing ScanCode is Downloading the latest release as an application and then configure and use directly. This is easy because no knowledge of pip/git or other developer tools is necessary.

  • Installation via Docker:

    An alternative to installing the latest Scancode Toolkit release natively is to build a Docker image from the included Dockerfile. This is easy because the only prerequisite is a working Docker installation.

  • Installation from Source Code: Git Clone

    You can download/clone the source code repository via git/GitHub and then run a configure script to install ScanCode.

  • Installation as a library: via pip

    To use ScanCode as a library in your application, you can install it via pip. This is recommended for developers/users familiar with Package managers/virtualenv.

Before Installing

ScanCode requires either Python 3.6.x or Python 2.7.x and is tested on Linux, Mac, and Windows. Make sure Python 3.6 or Python 2.7 is installed first.

System Requirements

  • Hardware : ScanCode will run best with a modern X86 processor and at least 2GB of RAM and 250MB of disk.

  • Supported operating systems : ScanCode should run on these OSes:

    1. Linux: on most recent 64-bit Linux distributions (32-bit distros are only partially supported),

    2. Mac: on recent Mac OSX (10.6.8 and up),

    3. Windows: on Windows 7 and up (32- or 64-bit) using a 32-bit Python.

Prerequisites

ScanCode needs a Python 3.6 (highly recommended) or a Python 2.7 interpreter.

Note

ScanCode currently doesn’t support versions above Python 3.6.x, though support will be added soon.

  • On Linux:

    Use your package manager to install python3.6 (Recommended) or python2.7.

    For ubuntu, it is sudo apt install python3.6-dev

    • On Ubuntu 14, 16 and 18, run: sudo apt install python3.6-dev bzip2 xz-utils zlib1g libxml2-dev libxslt1-dev

    • On Debian and Debian-based distros run: sudo apt-get install python3.6-dev libbz2-1.0 xz-utils zlib1g libxml2-dev libxslt1-dev

    • On RPM-based distros run: sudo yum install python3.6-devel zlib bzip2-libs xz-libs libxml2-devel libxslt-devel

    • On Fedora 22 and later run: sudo dnf install python3.6-devel xz-libs zlib libxml2-devel libxslt-devel bzip2-libs

    If they are not available from your package manager, you must compile it from sources. For instance, visit this wiki for instructions to compile Python 2.7 from sources on Centos.

    To install Python 2.7 instead, replace python3.6-dev with python-dev (or devel) according to your specific platform.

  • On Mac:

  • On Windows:

    Download and install Python from this url:

    Note

    64-bit Python interpreters (x86-64) are currently not supported by Scancode for Python 3.6/2.7 in Windows. Use 32-bit Python instead, even with 64-bit Windows. For Python 2.7, use the 32 bit MSI installer linked above.

    See the Installation on Windows section for more installation details.

Warning

Do not use Unicode, non-ASCII in your installation Path if you are using a Python 2.7 interpreter.

Note

ScanCode comes with packaged with all dependencies, and so apart from downloading it as an application, only Python has to be downloaded and installed separately.

Installation as an Application: Downloading Releases

Installation on Linux and Mac

Get the Scancode Toolkit tarball or zip archive of a specific Version by going to the GitHub Release Page

For example, Version 3.1.1 tarball or .zip archive can be obtained from Toolkit Release 3.1.1 under assets options. Download and extract the Archive from command line:

For .zip archive:

unzip scancode-toolkit-3.1.1.zip

For .tar.bz2 archive:

tar -xvf scancode-toolkit-3.1.1.tar.bz2

Or, Right Click and select “Extract Here”.

Check whether the Prerequisites are installed. Open a terminal in the extracted directory and run:

./scancode --help

This will configure ScanCode and display the command line Help text.

Installation on Windows

  • Download the latest ScanCode release zip file from https://github.com/nexB/scancode-toolkit/releases/

  • In Windows Explorer (called File Explorer on Windows 10), select the downloaded ScanCode zip and right-click.

  • In the pop-up menu select ‘Extract All…’

  • In the pop-up window ‘Extract zip folders’ (‘Extract Compressed (Zipped) Folders’ on Windows 10) use the default options to extract.

  • Once the extraction is complete, a new Windows Explorer/File Explorer window will pop up.

  • In this Explorer window, select the new folder that was created and right-click.

Note

On Windows 10, double-click the new folder, select one of the files inside the folder (e.g., ‘setup.py’), and right-click.

  • In the pop-up menu select ‘Properties’.

  • In the pop-up window ‘Properties’, select the Location value. Copy this to the clipboard and close the ‘Properties’ window.

  • Press the start menu button (On Windows 10, click the search box or search icon in the taskbar.)

  • In the search box type:

    cmd

  • Select ‘cmd.exe’ listed in the search results. (On Windows 10, you may see ‘Command Prompt’ instead – select that.)

  • A new ‘cmd.exe’ window (‘Command Prompt’ on Windows 10) pops up.

  • In this window (aka a ‘command prompt’), type ‘cd’ followed by a space and then Right-click in this window and select Paste. This will paste the path where you extracted ScanCode:

    cd path/to/extracted_ScanCode

  • Press Enter.

  • This will change the current location of your command prompt to the root directory where ScanCode is installed.

  • Then type:

    scancode -h

  • Press enter. This will configure your ScanCode installation.

  • Several messages are displayed followed by the ScanCode command help.

  • The installation is complete.

This uses the default Python present in the PATH environment variable i.e. the last Python installed registers itself in the environment is the default. You can also use the configure script to explicitly provide the Python path to ScanCode.

  • Follow the Instructions above till changing the current location of your command prompt to the root directory where ScanCode is installed.

  • Run this command with the path to Python Executable:

    configure --python path/to/python

  • You can also use path instead of path/to/python to use the python from PATH environment variable. More information is available at the configure script (L6-L15).

  • Now you can run scancode -h to display the Help Text, and here the installation is complete.

Un-installation

  • Delete the directory in which you extracted ScanCode.

  • Delete any temporary files created in your system temp directory under a ScanCode directory.

Installation via Docker:

You can install Scancode Toolkit by building a Docker image from the included Dockerfile. The prerequisite is a working docker installation.

Download the ScanCode-Toolkit Source Code

Build the Docker image

The docker build command needs to run in the directory of the source code, make sure to cd into the correct directory.:

cd scancode-toolkit
docker build -t scancode-toolkit .

Run using Docker

The docker image will forward all arguments it receives directly to the scancode command.

Display help:

docker run scancode-toolkit --help

Mount current working directory and run scan on mounted folder:

docker run -v $PWD/:/project scancode-toolkit -clpeui --json-pp /project/result.json /project

This will mount your current working from the host into /project in the container and then scan the contents. The output result.json will be written back to your current working directory on the host.

Note that the parameters before scancode-toolkit are used for docker, those after will be forwarded to scancode.

Installation from Source Code: Git Clone

You can also download the Scancode Toolkit Source Code and build from it yourself. This is how you would want to do it if:

  • You are Adding new patches to Scancode and want to test it. So you build ScanCode locally with your added changes.

  • You want to test a specific Version/Checkpoint/Branch from the VCS.

Download the ScanCode-Toolkit Source Code

If you don’t have the ScanCode Toolkit Source Code downloaded, get it from its official Repository (Downloaded as a .zip file)

Or you can run the following if you have Git installed:

git clone https://github.com/nexB/scancode-toolkit.git
cd scancode-toolkit

Now, by default the files are checked out to the develop branch, but you can jump to any checkpoint using the following command:

git checkout master

Here, master branch has the latest release of Scancode-Toolkit. You can also check out to any of the following:

  • Branches (Locally created or already present) [Example - master, develop etc]

  • Tags (essentially Version Numbers) [Example - v3.1.1, v3.1.0 etc]

  • Commits (use the shortened commit hash) [Example - 4502055, f276398 etc]

Configure the build

ScanCode use the Configure scripts to install a virtualenv, install required packaged dependencies as pip requirements and more configure tasks such that ScanCode can be installed in a self-contained way with no network connectivity required.

On Linux/Mac:

  • Open a terminal

  • cd to the clone directory

  • run ./configure

On Windows:

  • open a command prompt

  • cd to the clone directory

  • run instead configure

Now you are ready to use the freshly configured scancode-toolkit.

Installation as a library: via pip

ScanCode can be installed using pip, the default Python Package Manager. The steps are:

  1. Create a Python 3.6 Virtual Environment:

    virtualenv -p /usr/bin/python3.6 venv-scancode

For more information on Python virtualenv, visit this page.

  1. Activate the Virtual Environment you just created:

    source venv-scancode/bin/activate

  2. Run pip install scancode-toolkit[full] to install the latest version of Scancode.

Note

If you use Python 2.7, scancode-toolkit Version 3.0.2 is installed by default. For Python 3 the latest version of Scancode Toolkit is installed by default. Requesting a specific version through pip install for Python 3 will give Errors if the Version isn’t 3.1.x or later.

Warning

Python 3.7.x and 3.8.x is not supported yet.

To uninstall, run pip uninstall scancode-toolkit.

Commands Variation

The commands to run ScanCode varies for:

  • Different Installation Methods

  • OS used

The two types of commands are:

  • scancode [OPTIONS] <OUTPUT FORMAT OPTION(s)> <SCAN INPUT>

  • path/to/scancode OPTIONS] <OUTPUT FORMAT OPTION(s)> <SCAN INPUT>

In the second case, ./scancode is used if already in the directory.

These variations are summed up in the following table:

Installation Methods

Application Install

Pip Install

Install from Source Code

Linux

./scancode

scancode

./scancode

Mac

./scancode

scancode

./scancode

Windows

scancode

scancode

scancode

To sum it up, scancode is used in these two cases:

  • If pip install is used.

  • If the OS is Windows.

In all other cases, ./scancode is used.