kicad-developers team mailing list archive

[Cirilo Bernardo <cirilo.bernardo@xxxxxxxxx>]

OCCT is usually quite a few commits ahead of OCE; in fact OCE is
usually based on the earlier release of OCCT. In addition to that,
since we build in MSYS on MSWin, a patch (which is an ugly hack) is
required to support non-ASCII characters in file names.

- Cirilo

On Mon, Jan 29, 2018 at 8:08 PM, Simon Wells <swel024@xxxxxxxxx> wrote:
> please see https://lists.launchpad.net/kicad-developers/msg31544.html
>
> There are different minimum versions required of OCCT and nick also had
> issues with occt working iirc
>
> i think i would still prefer being able to set whether to allow occ in place
> of oce as was my initial thoughts but i have not worked on this due to the
> issues experienced by nick
>
>
> btw as oce is just a fork of occt would that not have the same issues?
>
> On 30/01/2018, at 9:04 AM, Wayne Stambaugh <stambaughw@xxxxxxxxx> wrote:
>
> Hey Seth,
>
> One of us missed something.  Here is my interpretation:
>
> The opencascade website license states:
>
> "Open CASCADE Technology version 6.7.0 and later are governed by GNU
> Lesser General Public License (LGPL) version 2.1 with additional exception."
>
> It makes no mention of later versions of the LGPL (including the
> exception) so I am interpreting this as v2.1 only.  I do not have a copy
> (and I'm not going to sign up to get a copy so please check the
> copyright in the source to see if it matches the website) of the
> opencascade source archive to see if the license in the source
> specifically states "v2.1 or (at your option) any later version" which
> is typically how the GPL and LGPL are used.  If it does, than I can
> safely add this patch because I can make the claim that I am using
> opencascade under at later version of the LGPL which is compatible with
> the GPL 3 used by kicad.
>
> According to the folks at the FSF:
>
> "Please note that GPLv2 is, by itself, not compatible with GPLv3.
> However, most software released under GPLv2 allows you to use the terms
> of later versions of the GPL as well. When this is the case, you can use
> the code under GPLv3 to make the desired combination. To learn more
> about compatibility between GNU licenses, please see our FAQ."
>
> I hope this clarifies why I am hesitant to merge this patch and what
> needs to clarified.  Isn't licensing fun! ;)
>
> Thanks,
>
> Wayne
>
> On 1/29/2018 2:47 PM, Seth Hillbrand wrote:
>
> Hi Wayne-
>
> My reading of your links is different.  Here's the relevant quote:
>
> "GNU Lesser General Public License (LGPL) version 2.1 (#LGPLv2.1) This
> is the previous version of the LGPL: a free software license, but not a
> strong copyleft license, because it permits linking with nonfree
> modules. It is compatible with GPLv2 and GPLv3."
>
> Did I miss something?
>
> -Seth
>
> 2018-01-29 11:18 GMT-08:00 Wayne Stambaugh <stambaughw@xxxxxxxxx
> <mailto:stambaughw@xxxxxxxxx>>:
>
>    Seth,
>
>    There maybe licensing issues involved with this.  OpenCascade is
>    licensed using LGPL v2.1 not v2.1[1] or later.  LGPL v2.1 is not
>    compatible with GPL 3[2].  If OpenCascade is willing to change their
>    license LPGL 2.1 or later or if this is just an oversight on their part,
>    than I can include this patch.  Please verify the OpenCascade license
>    with something that I can verify to ensure we are not violating and
>    licensing terms.
>
>    Cheers,
>
>    Wayne
>
>    [1]: https://www.opencascade.com/content/licensing
>    <https://www.opencascade.com/content/licensing>
>    [2]:
>    https://www.gnu.org/licenses/license-list.en.html#GPLCompatibleLicenses
>    <https://www.gnu.org/licenses/license-list.en.html#GPLCompatibleLicenses>
>
>    On 1/29/2018 1:54 PM, Seth Hillbrand wrote:
>
> Hi All-
>
> Currently, the build requires the opencascade community edition.  For
> various reasons, I need to have the current non-community edition of
> OpenCASCADE installed on my work machine.
>
> The attached patch allows compiling KiCad with either the OpenCASCADE
> community edition or standard edition.
>
> I've tested on a homebrew-based Mac install as well as Linux but
>
>    haven't
>
> verified MSW, if someone would be willing to test it there, that would
> be great!  The basic search routines are lightly modified from
>
>    FreeCAD's
>
> logic and keep their LGPL copyright on the CMake file.
>
> -Seth
>
>
>
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