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July 2007
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2007.07.16 09:04 "Re: [ANNOUNCE]: Libtiff 4.0.0alpha released", by Andy Cave
So what happens if someone builds a standalone piece of s/w (tiffjbigdecomp) that reads (compressed) data from stdin and writes (uncompressed) data to stdout. They can then write s/w that execs a sub-process, redirecting stdin/stdout to be a file on disk and a pipe, and then just read the decompressed data from the pipe. Does that infringe GPL? I think not (as otherwise no commercial s/w could run on Linux), in which case I think the claim that dynamic loading / linking does (infringe GPL) is not necessarily solid, as the difference between that and dynamic linking to a library is pretty thin. Andy. ----- Original Message ----- From: "Bob Friesenhahn" <bfriesen@simple.dallas.tx.us> To: "Jay Berkenbilt" <ejb@ql.org> Cc: <tiff@lists.maptools.org> Sent: Sunday, July 15, 2007 1:27 AM Subject: Re: [Tiff] [ANNOUNCE]: Libtiff 4.0.0alpha released > On Sat, 14 Jul 2007, Jay Berkenbilt wrote: >> >> On the JBIG issue, I think it's pretty safe to say that the debian >> version of libtiff will not include JBIG support. I wonder whether >> there would be a way to make JBIG support available at runtime on >> platforms that support dynamic loading. In any case, I think the > > A number of years ago I engaged in a discussion with Richard Stallman and > the JBIG-KIT author to discuss if using dynamic loading to use JBIG-KIT > was acceptable (in order to avoid GPL by providing separability) and the > opinion of RMS and the JBIG-KIT author was a solid 'no'. However, it > seems to me that it does allow users who are using GPL compliant > distribution methods to extend the package later or remove the component. > > There is yet another issue that JBIG-KIT itself is not distributable under > the GPL (even though it uses the GPL license) since it violates patents > recognized in many countries. > > Bob > ====================================== > Bob Friesenhahn > bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ > GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ > > _______________________________________________ > Tiff mailing list: Tiff@lists.maptools.org > http://lists.maptools.org/mailman/listinfo/tiff > http://www.remotesensing.org/libtiff/