On 13/03/18 20:04, Ythogtha wrote:
> Hi everybody !
>       it seems that ffmpeg can't compile with opencv version 3.4.1, here is
> the message, it happens straight after the un-tar-ing of the source :
> ####
> [...]
> ffmpeg-3.4/COPYING.LGPLv2.1
> ffmpeg-3.4/README.md
> ffmpeg-3.4/CONTRIBUTING.md
> ERROR: opencv not found
> If you think configure made a mistake, make sure you are using the latest
> version from Git.  If the latest version fails, report the problem to the
> ffmpeg-u...@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
> Include the log file "ffbuild/config.log" produced by configure as this will 
> help
> solve the problem.
> ####
> Opencv 3.4.1 does seem to work on its own.
> ffmpeg compiles fine with OpenCV 3.4.0.
> ffmpeg does not work when compiled against OpenCV 3.4.0, if OpenCV is updated 
> to
> 3.4.1 - but that was to be expected, ffmpeg is pretty touchy with specific
> versions of the libraries it uses.
> The error is the same if I try with ffmpeg 3.4.2 (the latest).
> I don't have a solution, and I just wanted to point that out, since I don't
> really use OpenCV, so I can compile my ffmpeg without it (or with the previous
> version). I just like my ffmpeg bloated with options ^^

An interesting problem - opencv is optional for ffmpeg and ffmpeg is
optional for opencv i.e. an optional circular dependency.


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