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Re: [MANTA] Trolltech Qt Open Source Edition


Chronological Thread 
  • From: Solomon Boulos <boulos@cs.utah.edu>
  • To: Steven Parker <sparker@cs.utah.edu>
  • Cc: Rocky Rhodes <rhodes@sgi.com>, manta@sci.utah.edu
  • Subject: Re: [MANTA] Trolltech Qt Open Source Edition
  • Date: Mon, 16 May 2005 21:25:48 -0400
I've recently added a Fox Toolkit (www.fox-toolkit.org frontend to galileo, and it went very smoothly. Fox is LGPL, which would put no constrains on the Manta licensing (as I understand it). As a caveat, the dynamic library of Fox does not build out of the box on any of the SGI systems we've tested (nor even linux systems if I remember correctly) but the static version builds just fine. I've got the latest stable version (1.4.12) for both SGI (built on muse) and Linux (built on fisher) already compiled in /home/sci/boulos/fox and /home/ sci/boulos/fox-linux respectively if anyone is interested in using them ( the include/fox-1.4/ and lib/ subdirectories are the ones of interest ).

One advantage of Fox over Qt that I appreciate is that Fox works entirely within the compiler (Qt requires an XML preprocessor to go through your code), although I haven't used Qt much at all
(just played around with it for a minute really to see the differences).

Solomon

On May 16, 2005, at 9:13 PM, Steven Parker wrote:

I've used it a little bit. It is quite nice. The downside is the license. The last we looked at it, you could either pay them a license fee for every developer or make your code GPL. We don't mind buying license fees for our developers, but we don't want to force anyone that ever develops something for SCIRun (or Manta) to also buy a license, especially since they may just want to write a few lines.

Greg Jones went several rounds with their legal department and they didn't want to work with us, even if we were willing to buy licenses. We finally gave up.

From their FAQ: "You can use Qt for free only if you are writing Open Source software following the obligations of the GPL license. You will then need to publish the source code of your software for free, unlimited re-use and re-distribution by anyone for any purpose."

This isn't compatible with the MIT license, and would place odd constraints on Manta.

Steve


On May 16, 2005, at 7:03 PM, Rocky Rhodes wrote:


Is anyone familiar with Trolltech's Qt GUI framework? There's a group here at SGI that is using it for an open source project and seem pretty happy with it.

www.trolltech.com

            Rocky









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