libvpx7 dependency

[Mustrum]

I wonder why ScummVM (Daily Build/master branch) depends strictly on libvpx7 and not on a higher version.
Currently libvpx7 is only available for Debian/stable (bookworm) but not more for Debian/unstable. Debian unstable/sid currently uses libvpx8 and/or libvpx9.

With libvpx9 installed, but without libvpx7, ScummVM does not start. The console says:

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./scummvm: error while loading shared libraries: libvpx.so.7: cannot open shared object file: No such file or directory

Currently I have libvpx9 installed with manual symlink from libvpx.so.9 to libvpx.so.7

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ln -s /usr/lib/x86_64-linux-gnu/libvpx.so.9 /usr/lib/x86_64-linux-gnu/libvpx.so.7

This works, but the symlink should not be, because a working libvpx9 is already installed.

Better would be a dependency query like libvpx7 >= or so.

Edit: I found the check for VP8/VP9 Decoder here:
https://github.com/scummvm/scummvm/blob ... gure#L5397

[eriktorbjorn]

The daily build seems to be linked against libvpx7 but I've had no problems compiling ScummVM on Debian unstable, where it seems to link against libvpx9 for me.

[sev]

We do not require any specific version of libvpx. As you saw in the testing code, it does not check the version.

Our buildbot runs on a specific machine, and it just happens that libvpx7 is installed there. Some developer has to update the libraries on the buildbot.


Eugene