[Interest] OpenCV + Qt iOS: Wrong JPEG library version: library is 62, caller expects 80

Mike Krus mike.krus at kdab.com
Wed Jan 22 15:06:46 CET 2020

mine, for similar issues using GDAL, was to build everything from source, zlib, png, jpeg, tiff, gdal, qt
(making sure you select external jpeg/png for the later).
It’s a pain (and super time consuming) but all due to static linking.


> On 22 Jan 2020, at 13:19, Pierre-Yves Siret <py.siret at gmail.com> wrote:
> Le mer. 22 janv. 2020 à 01:29, Jason H <jhihn at gmx.com> a écrit :
> Does anyone know how to handle this? I'm not sure who is using which version.
> What I did: linked OpenCV into an iOS Qt app. Tape a picture and onImageSaved handler, set an Image element source property to "file://"+path, then it crashes immediately.
> Works fine in Android.
> My workaround a few years ago was to compile OpenCV without jpeg support. 
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Mike Krus | mike.krus at kdab.com | Senior Software Engineer
KDAB (UK) Ltd., a KDAB Group company
Tel: UK Office +44 1625 809908   Mobile +44 7833 491941
KDAB - The Qt Experts, C++, OpenGL Experts

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