It does not work at all, also start.txt is completely empty, nothing is written in it


Also your appimage does not start GIMP >> it's the same PPA as you, PPA ubuntuhandbook (Panda Jim)


I did tried to extract as well (--appimage-extract) then went to the squashfs-root/AppRun = same error as screenshot above

Yes I run the ppa too for Gimp 2.10.30. Your last one did show mathmap in the menu, but it errors out on all filters and doesn't show any preview.

After reading Patrice's results I got an old (dual core) notebook and installed Xubuntu 20.04 dated April 2021. I installed the ubuntuhandbook ppa Gimp 2.10.30. My last appimage worked fine.

Here are some quick tests I did:
gcc --version = 9.4.0
ldd --version = 2.31
locate stdlib.h = /usr/include/stdlib.h

I've never seen an error message like that one racer-x Maybe stdlib.h is somewhere else?

I have pretty much moved to Ubuntu 22.04 because developing for an OS that is about to become obsolete is a waste of time IMHO.
Also bundling Gimp in the appimage would be better than figuring out every possible Gimp configuration. Or just do this for myself. I like animating and ways of achieving it.

I don't have "stdlib.h" in: "/usr/include". My system is running Linux Mint XFCE 20.3 LTS which is based off ubunto 20-04, but I'm sure there are differences in file system.

No worries, I was just curious and in the mood to experiment. I don't really need mathmap anyway.

Thanks for testing Patrice and racer-x Once the ubuntu distros were similar under the hood but not anymore it seems. I will do my own testing from now on, I think app testing like Travis Cl charge$. I can make some Ubuntu and Mint Vms - I'll do that.