Hi, I'm currently working on packaging IFRIT (a piece of data visualization software which uses VTK and QT). I've been auditing all of the source files to check their licenses before I finish off the packaging and apart from a couple of small issues (small files not having licenses) which I'm going to contact upstream about, it all looks reasonably good. I just want to check one thing. The license for the majority of the IFRIT code is this: /*========================================================================= Copyright (c) 2002-2003 Nick Gnedin All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither name of Nick Gnedin nor the names of any contributors may be used to endorse or promote products derived from this software without specific prior written permission. * Modified source versions must be plainly marked as such, and must not be misrepresented as being the original software. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. =========================================================================*/ A wdiff between this and the VTK license shows that just the names of the contributors have been changed (as you'd expect). It appears to be a modified BSD license (i.e. without advertising clause) with one extra clause: * Modified source versions must be plainly marked as such, and must not be misrepresented as being the original software. My question is about linking this against GPL code (in this case, QT). I think this is probably ok but my only point of reference for this is that the zlib license (which the FSF describe as being GPL compatible - http://www.gnu.org/licenses/license-list.html) contains the following clause: 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. Basically, I just want to check before sorting out the remaining small issues with upstream and continuing with the package that the consensus of opinion here is that this is all ok and correct. Many thanks, Mark -- Mark Hymers, University of Newcastle Medical School Intercalating Medical Student (MBBS / PhD)
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