[QGIS-Developer] [qgis-server] Build gdal with external libraries for qgis-server

René-Luc Dhont rldhont at gmail.com
Fri May 24 03:10:24 PDT 2019


Hi Benjamin,

To use *ECW* in *server*-based products requires additional licensing 
permissions.

If you have the licence agreement, you can build GDAL with ECW, but you 
also need to build QGIS Server with ECW support.

Regards,
René-Luc

Le 24/05/2019 à 11:38, Benjamin Deregnaucourt a écrit :
> Hello,
>
> I'm currently a student at the University of Lille, I recently gained 
> access to some mapfiles so I'm not accustomed to qgis yet. I would 
> like to use a map server to share these files inside of my local network.
>
> I want my server to be as complete as possible so I did some research 
> and I found some libraries such as kea, Mr.Sid or ecw which can be 
> built with gdal in order to read different files' types.
>
> I built gdal with kea and Mr.Sid which work on my server, however, 
> when I used ecw with the free version of SDK and I completed the 
> installation, I got a warning saying that ecw had been skipped in the 
> server and when I added an ecw file to a qgis project, my project 
> wasn't working anymore (request timed-out).
>
> I made a mistake during the installation, ecw has a server supported 
> version while I used the free desktop version. Does the skipping issue 
> come from the difference between licenses?
>
> Is it possible to build gdal with ecw and use it in qgis-server 
> legally for free?
>
> If it's not possible and in the hypothesis that I managed to get a 
> license, will it be working properly once gdal is built with the 
> correct version of ecw?
>
> Thanks a lot for your time
>
> Benjamin Deregnaucourt
>
>
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