This article by Jerry Epplin sheds some light on the issues associated with using GPL software in embedded applications, and attempts to dispel the “FUD” (“Fear, Uncertainty, and Doubt”) being propagated by some competitors to Linux. Epplin explains what is required to strictly comply with the GPL, defines and discusses the distinctions between static and dynamic drivers and modules, and points out a gray… area that does exist relative to the Linux GPL copyright. Epplin writes . . .

“In a recent article in Integrated Communications Design, Mike Downing interviews Curt Schacker, vice president of corporate marketing for Wind River Systems. In the interview, Schacker expresses his 'fear' that legal ambiguity surrounding the GPL 'is impeding development in the embedded open-source arena.' “

“In Schacker's hypothetical scenario, a company making Ethernet switches uses Linux for the platform and chooses not to release their code under the GPL, because it represents the bulk of their product's core technology. Shacker fears that because the GPL has not been tested in court, this company's project may be in jeopardy. He says, 'Can you imagine a court case some day that determines that all of the software you've developed falls under the GPL, and is now in the public domain?' “

“While some have jumped to the conclusion that Schacker is cynically spreading FUD ('Fear, Uncertainty, and Doubt') about a technology (Linux) and development model (open source) that poses a threat to his company, I prefer to think that he is genuinely concerned about the welfare of users of Linux in embedded applications.”

“Thus, I will do my best to allay his fears.”

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