To build : % make distclean % make build=site For example : % make build=sogo-demo To activate debugging info, add to site.js : pref("javascript.options.showInConsole", true); pref("nglayout.debug.disable_xul_cache", true); pref("browser.dom.window.dump.enabled", true); pref("javascript.options.strict", true); If you want to uninstall a previously installed extension from SOGo's updates.php script, just set its version number to "disabled" in the php script.