Composer is a tool for dependency management in PHP. It allows you to declare the dependent libraries your project needs and it will install them in your project for you.

Please have a look at the Composer Documentation This nice article on What is PHP Composer will give you a quick overview.

Composer allows to select dependencies for runtime and development in the file composer.json. In addition it enables easy integration of autoloading.

The file composer.lock is used to store the current version state.

Use

composer install

to install dependencies according to the content of composer.lock.

Use

composer update

to update to the latest packages according to composer.json and update composer lock accordingly.

The dependencies added by composer will be located in src/vendor.

Composer uses the default proxy environment variables HTTP_PROXY etc.

In some cases an additional

export HTTPS_PROXY_REQUEST_FULLURI=false

may help.

You will need a computer with internet access and PHP installed.

Let's assume that the computer with internet access is called compONand that without internet access is called compOFF.

Get the source code of FOSSology that you want to install on compOFF (let's call this directory fossytree). It is important that it's exactly the same source code, so that composer.json and composer.lock are the same.

Create a directory to gather all files that will be transferred later to compOFF (let's call this directory phpvendors).

If the command which composer returns a path (Composer is already installed), then copy the file of the path to "phpvendors" as composer.phar:

cp `which composer` phpvendors/composer.phar

If the command which composer doesn't return a path, download Composer manually:

cd phpvendors ; curl -sS https://getcomposer.org/installer | php

Both ways you should get Composer in the file phpvendors/composer.phar.

Get into the directory fossytree and execute the required make target:

make phpvendors

This way composer will install the PHP dependencies of FOSSology into fossytree/src/vendor. Move this directory to phpvendors:

cp -R fossytree/src/vendor phpvendors/

You should have at this point the directory phpvendors with following content:

/ phpvendors
|- composer.phar
|- /vendor
   |- autoload.php
   |- /bin
   |- /composer
   ...

Get the files prepared on compON:

scp -R compON:phpvendors compOFF:phpvendors

Copy Composer as root to a directory available through the environment variable PATH (for example, /usr/local/bin):

cp phpvendors/composer.phar /usr/local/bin/composer

This step is required during the installation of FOSSology from source code before running make install.

Ensure that the directory /usr/local/share/fossology exists.

Copy as root the directory phpvendors/vendor to /usr/local/share/fossology:

cp -R phpvendors/vendor /usr/local/share/fossology/

Then you can go on with the installation procedure.