java.lang.UnsatisfiedLinkError: no jniopencv_videoio in java.library.path due to java.lang.UnsatisfiedLinkError: ... (libgtk-x11-2.0.so.0)

[bytedeco]

java.lang.UnsatisfiedLinkError: no jniopencv_videoio in java.library.path due to java.lang.UnsatisfiedLinkError: ... (libgtk-x11-2.0.so.0)

[LtHummus]

For anyone that stumbles upon this later looking for answers:

If you are on Amazon Linux 2, sudo yum install gtk2-devel

[lloydmeta]

That's strange, I have not seen that error before. In the interest of being thorough, can you make sure you're using the latest JavaCPP by setting the following?

javaCppVersion := "1.3.1"

Also, ffmpeg's latest version is "3.2.1" I believe.

It might be possible that on that platform (linux-x86_64) the shared library object wasn't packaged with the presest jar. @saudet any idea?

[RoiViber]

@lloydmeta thanks for the quick reply. I tried adding the version argument, same result here.
I'm using Amazon's AWS machines, and they have their own linux distribution so I also don't seem to find any way of installing this specific gtk version manually.

[RoiViber]

btw, looking at /myjar.jar/org/bytedeco/javacpp/linux-x86_64/ i have a a lot of libjni*.so files, none of them contain "gtk", so apparently it isn't packaged.

[saudet]

GTK comes preinstalled with pretty much any Linux distribution... except the one from Amazon that is? So it looks like we might have to do something about that. As usual, contributions are welcome!

[lloydmeta]

I'm closing this issue for now because it doesn't seem to be related to the SBT plugin.

The discussion should probably continue on the javacpp-presets project, or this PR.

[saudet]

Duplicate of bytedeco/javacpp-presets#593