Maybe is there a way to provide our own cppcheck config file where we define what we need?
What a great idea, it's green! https://github.com/geany/geany-plugins/pull/1197/checks
Thanks for the input, replacing the GTK library configuration with a custom one with only a few macros, worked fine. I'm not sure if the Autotools part is correct or can be improved but cppcheck runs again.
I removed all the previous suppression hints.
@techee thanks for the suggestion and the great analysis above!