strigi: build failure with ffmpeg 4

[jwhowse4]

I am running an Intel Mac Pro with Sierra 10.12.6 and XCode 9.2. After upgrading ffmpeg from 3.4.2 to 4.0.0, the macports check for linking errors identifies strigi as needing to be rebuilt. The rebuild fails with errors as listed in the attached log file. Any idea what is wrong here?

[jwhowse4]

strigi rebuild log file

[ryandesign (Ryan Carsten Schmidt)]

This version of strigi is probably simply not compatible with this version of ffmpeg. Someone will have to update strigi.

[jwhowse4]

As far as I can tell, strigi is a legacy component of KDE4 and development has ceased. Unfortunately the package kdelibs4 and hence all macports KDE packages depend on strigi. So it seems to me the options here are 1) hack strigi to work with the newer ffmpeg, 2) update all the macports KDE packages to a more recent version of KDE, 3) create an ffmpeg3 port which strigi depends upon. Number 3 sounds like the easiest option to me. What is your opinion?

[jwhowse4]

I should add that version 0.7.8 is the most recent and probably final version of strigi.

[pmetzger (Perry E. Metzger)]

At some point a newer KDE will need to be brought in, but (3) may be expedient temporarily.

[mf2k (Frank Schima)]

Cc'ing ffmpeg maintainers for possible comment.

[mf2k (Frank Schima)]

This also affects kde ports.

[kencu (Ken)]

for right now, you can turn off ffmpeg support in strigi by putting this in the Portfile

configure.args-append  -DENABLE_FFMPEG:BOOL=OFF

or activate the older version of ffmpeg assuming you still have it installed.

presumably someone somewhere will update strigi for the deprecated (and now apparently deleted) ffmpeg API that it is using.

Maybe there is some other way to turn on the older ffmpeg behaviour with a cpp define -- haven't looked into that.

[NicosPavlov]

The API used by strigi is mostly still present, it seems to be just one variable that is problematic. I patched the code to have it compile.

[NicosPavlov]

In fddc54476e4f27c908cdf6d0316653be2f87c0d9/macports-ports (master):

strigi: update ffmpeg variables to use more recent API, remove deprecated variable (fixes #56390)