Links
[1] https://www.ifross.org/?q=en/gnu-general-public-license-v30-wautoconf-exception
[2] https://www.ifross.org/?q=en/user/login&destination=comment/reply/1349%23comment-form
[3] https://www.ifross.org/?q=en/category/lizenzordnung/open-source-lizenzen/ii-lizenzen-strengem-copyleft-effekt/gplartige-lizenzen
[4] https://www.ifross.org/?q=en/category/tags/gpl-30-autoconf-exception