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- From: tgl+@cs.cmu.edu (Tom Lane)
- Newsgroups: comp.sys.ibm.pc.misc,comp.os.msdos.apps,comp.binaries.ibm.pc.d
- Subject: Re^2: Why do people want PD software?
- Summary: GNU copyleft is restrictive
- Message-ID: <BtvKrK.2FM.2@cs.cmu.edu>
- Date: 1 Sep 92 01:14:07 GMT
- Article-I.D.: cs.BtvKrK.2FM.2
- References: <bws.14@ccs.carleton.ca> <9LywPB1w165w@cybrspc.UUCP> <367@global.hacktic.nl> <1992Aug28.145404.17987@crd.ge.com> <3449@global.hacktic.nl> <1992Aug30.124845.23411@ccu.umanitoba.ca> <4158@global.hacktic.nl>
- Sender: news@cs.cmu.edu (Usenet News System)
- Organization: School of Computer Science, Carnegie Mellon
- Lines: 36
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-
- peter@global.hacktic.nl (Peter Busser) writes:
- > rahardj@ccu.umanitoba.ca (Budi Rahardjo) writes:
- > >peter@global.hacktic.nl (Peter Busser) writes:
- > >>Why would anyone need PD and not freeware?
- >
- > >With PD, I can distribute the program and source as part of my own program
- > >without any problems. With freeware (most of the time) I still have to get
- > >the permission from the author to distribute his/her program & source code.
- >
- > You didn't read, I was explicitly talking about GNU software and software
- > with a GNU-ish copyleft, i.e. freeware. You don't need any permission to
- > distribute GNU(-ish) software either in source or binary form. The only
- > requirement is that you provide the changed sources to anyone who wants them
- > at a nominal cost.
-
- Peter, evidently *you* didn't read the GNU copyleft very carefully.
-
- If you use some GNU code in a program you write, the GNU General Public
- License effectively requires you to distribute the ENTIRE program under
- the GNU conditions. In particular, you have to give away, for free,
- *your* source code as well as theirs. (See their definition of "complete
- source code" if you don't believe me.) And if someone else uses what
- you've done in a bigger program, they become subject to the GPL as well.
-
- Some people who object to this restriction refer to the GPL as the General
- Public Virus because of its self-replicating properties.
-
- I have personally been involved in a free software project wherein we
- refrained from using any GNU code, simply because we wanted to use our
- distribution terms and not GNU's.
-
- There is a big difference between free software and PD software.
- For some purposes the difference does not matter; but claiming that
- it never matters merely shows your ignorance.
-
- regards, tom lane
-