[digikam] [Bug 465381] DigiKam (and Showfoto) crashes on start on MacOS 10.13

[Matt P.]

https://bugs.kde.org/show_bug.cgi?id=465381

--- Comment #9 from Matt P. <mattp at web.de> ---
(In reply to caulier.gilles from comment #8)
> digiKam <-> macOS compatibility is explained in online documentation :
> https://docs.digikam.org/en/getting_started/installation.html#digikam-on-
> macos
> 
> Gilles Caulier

Hello Gilles, Hello Maik, 

after digging deeper into this, I found a hint in GITLAB where the same effect
was reported against GIMP two month ago.
( https://gitlab.gnome.org/GNOME/gimp/-/issues/8930 )
I have invested an hour and tried the following:

- Installed Xcode 9.0 on this Mac
- Installed Macports 2.8 (latest avail for High Sierra)
- got librav1e through MacPorts ("sudo port install rav1e" )

This gave me librav1e (Version0.6.3) in /opt/local/lib
- I reinstalled (after removing Version 7.10) DigiKam 7.09)
- As DigiKam doesn't seem to be built with version-independent symlinks
("librav1e.dylib") I did a hard copy of this file to the 
   librav1e.0.5.1.dylib in (in /digiKam.org/digikam.app/Contents/lib -> sudo cp
/opt/local/lib/librav1e.0.6.3.dylib librav1e.0.5.1.dylib)
(bad,bad,bad)

Now ShowPhoto and DigiKam both start up succesfully !
I know that this is not a clean solution, I will have to think over my usage of
this old iron anyway.
I just wanted to let you (and the community) know how it can be fixed if "in
deep despair".

You may close this, if you like - thanks for all your efforts, anyway.

Best
Matt

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