"/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.30' not found" when trying .vst3 in Ardour about guitarix.vst HOT 7 CLOSED

Latest build (the link on the project page) used now as max glibcxx version 3.4.21, which is the default libstdc++6 version from Ubuntu 20.04

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The readelf gives me no reference to 3.4.30, just 3.4.26 as you said.

I've now also compiled from the source code, with no error message about GLIBCXX, deleted the precompiled binary, did make install, and as of now, Carla can run the VST3. Yay!

But Ardour plugin scan STILL gives me that error message. Maybe it's Ardour that's the problem? But how?

Edit Colour me embarrassed: Ardour was actually not rescanning the plugin, it had it ignore flagged even for scanning, so the result was always the old scan result. After manually doing "rescan selected" it correctly scanned and of course showed no more error. Order is restored to the world!

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You could add this ppa https://launchpad.net/~ubuntu-toolchain-r and install libstdc++6 from there
(That's what happen on the github service and I didn't find a way to avoid that)
or, you could run
sudo apt-get install libcurl4-gnutls-dev libfreetype6-dev libglibmm-2.4-dev libglib2.0-dev libsigc++-2.0-dev libfftw3-dev libsndfile1-dev liblilv-dev liblrdf0-dev libboost-iostreams-dev libstdc++6 libc6-dev libgcc-s1 libasound2-dev libgtk-3-dev libavahi-gobject-dev libavahi-glib-dev libavahi-client-dev libeigen3-dev libboost-system-dev

to install the dependencies and build it yourself.
There is no deep dependency to a more recent libstdc++6 version then yours.
But note, there is currently a unresolved issue with the official Ardour releases, leads to crash on session reload.
#17

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Great stuff! Thanks!! I'll give it a spin then!
(And Ardour issue hopefully won't be a problem as I'm still on 8.2...)

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Hmm, I downloaded the latest 0.2 binary and it still gives me the GLIBCXX error :/

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Are you sure you've removed the older one and installed (copied) the new one?
I've just checked it again and pretty sure it used the stock standard libstdc++ version from ubuntu 20.4
https://github.com/brummer10/guitarix.vst/actions/runs/8022387728/job/21916590721#step:5:42

I also checked the binary with
readelf -Ws '/path/to/Guitarix.vst3/Contents/x86_64-linux/Guitarix.so' | grep GLIBCXX

the highest version linked in is GLIBCXX_3.4.26

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Nice to hear.
Hope you enjoy guitarix.vst.

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