Linux: Crash on exit with dirty image

[Trevor D'Arcy-Evans]

git commit de3e6855074bef9f832a40e2c08ca1d34120324b

OS:
Linux Mint 21.1
dotnet 7.0.203

Steps to repro:
* start Pinta
* default/blank image displayed
* use any brush to draw a line
* close via X button in title bar
* CRASH

Callstack:
Unhandled exception. System.EntryPointNotFoundException: Unable to find an entry point named 'adw_message_dialog_new' in shared library 'Adw'.
   at Adw.Internal.MessageDialog.New(IntPtr parent, String heading, String body)
   at Adw.MessageDialog.New(Window parent, String heading, String body)
   at Pinta.Actions.CloseDocumentAction.Activated(Object sender, EventArgs e) in /home/trevorde/dev/Pinta/Pinta/Actions/File/CloseDocumentAction.cs:line 62
   at Pinta.Core.Command.<.ctor>b__33_0(SimpleAction o, ActivateSignalArgs args) in /home/trevorde/dev/Pinta/Pinta.Core/Actions/Command.cs:line 64
Aborted (core dumped)

Libs:
dpkg -l libadwaita*
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-======================-==============-============-==========================================
ii libadwaita-1-0:amd64 1.1.0-1ubuntu2 amd64 Library with GTK widgets for mobile phones
ii libadwaita-1-dev:amd64 1.1.0-1ubuntu2 amd64 Development files for libadwaita
un libadwaita-1-doc <none> <none> (no description available)

[Cameron White (cameronwhite91)]

Thanks for trying out the GTK4 port!
I think this is because libadwaita 1.2 will be the required min version - I should make sure that configure.ac performs this version check when building through the Makefiles

[Cameron White (cameronwhite91)]

The configure script now checks the libadwaita version with https://github.com/PintaProject/Pinta/commit/d115d16465ff83b65bc18527b77f34ef58d0f8bf