Z:gnu-www-ja-gpl-faq--09eefa-If you make object code availa/en

If you make object code available on a network server, you have to provide the Corresponding Source on a network server as well. The easiest way to do this would be to publish them on the same server, but if you'd like, you can alternatively provide instructions for getting the source from another server, or even a version control system. No matter what you do, the source should be just as easy to access as the object code, though. This is all specified in section 6(d) of GPLv3.