diff --git a/compliance-guide.tex b/compliance-guide.tex index 81891f4..53fae06 100644 --- a/compliance-guide.tex +++ b/compliance-guide.tex @@ -284,20 +284,27 @@ software.\footnote{This document addresses compliance with GPLv2, \section{Evaluate License Applicability} \label{derivative-works} -Political discussion about the GPL often centers around the ``copyleft'' -requirements of the license. Indeed, the license was designed primarily -to embody this licensing feature. Most companies adding non-trivial -features (beyond mere porting and bug-fixing) to GPL'd software (and -thereby invoking these requirements) are already well aware of their -more complex obligations under the license.\footnote{There has been much legal - discussion regarding copyleft and derivative works. In practical - reality, this issue is not relevant to the vast majority of companies - distributing GPL'd software. Those interested in this issue should study - \tutorialpartsplit{\textit{Detailed Analysis of the GNU GPL and Related - Licenses}'s Section on derivative works}{\S~\ref{derivative-works} of - this tutorial}.} +Political discussion about the GPL often centers around determining the +``work'' that must be licensed under GPL, or in other words, ``what is the +derivative and/or combined work that was created''. Nearly ever esoteric +question asked by lawyers seek to consider that question +\footnote{\tutorialpartsplit{In fact, a companion work, \textit{Detailed Analysis of the GNU GPL and Related + Licenses} contains an entire section discussing derivative works}{This tutorial in fact + also addresses the issue at length in~\S~\ref{derivative-works}}.} (perhaps because +that question explores exciting legal issues while the majority of the GPL +deals with much more mundane ones). +Of course, GPL was designed +primarily to embody the licensing feature of copyleft. -However, experienced GPL enforcers find that few redistributors' +However, most companies who add +complex features to and make combinations with GPL'd software +are already well aware of their +more complex obligations under the license that require complex legal +analysis. And, there are few companies overall that engage in such +activities. Thus, in practical reality, this issue is not relevant to the vast +majority of companies distributing GPL'd software. + +Thus, experienced GPL enforcers find that few redistributors' compliance challenges relate directly to combined work issues in copyleft. Instead, the distributions of GPL'd systems most often encountered typically consist of a full operating system