src/PEAR/Installer/Role.php
function initializeConfig(&$config)
    {
        if (!isset($GLOBALS['_PEAR_INSTALLER_ROLES'])) {
            PEAR_Installer_Role::registerRoles();
        }

        foreach ($GLOBALS['_PEAR_INSTALLER_ROLES'] as $class => $info) {
            if (!$info['config_vars']) {
                continue;
            }

            $config->_addConfigVars($class, $info['config_vars']);
        }
    }
function initializeConfig(&$config)
    {
        if (!isset($GLOBALS['_PEAR_INSTALLER_ROLES'])) {
            PEAR_Installer_Role::registerRoles();
        }

        foreach ($GLOBALS['_PEAR_INSTALLER_ROLES'] as $class => $info) {
            if (!$info['config_vars']) {
                continue;
            }

            $config->_addConfigVars($class, $info['config_vars']);
        }
    }
Set up any additional configuration variables that file roles require

Never call this directly, it is called by the PEAR_Config constructor
@param PEAR_Config
@access private
@static