Build using CMake GUI with gtk2 backend fails

Build System Used

I build wxWidgets and/or my application using:

• CMake
• configure
• mingw32-make with makefile.gcc
• MSBuild (Microsoft Visual Studio solution file)
• nmake with makefile.vc
• Xcode

Description

gtk2 doesn't work with the wayland protocol but wxHAVE_WAYLAND_SESSION_MANAGEMENT is defined unconditionally if the wayland development files exist. i think it should be undefined when building with the GTK2 backend. with the attached patch i was able to compile wxWidgets and then run an application which uses it (hugin in particular)

wxwidgets.patch

Platform and version information

• wxWidgets version you are building: latest head from git
• wxWidgets port you are building: wxGTK2
• OS and its version: Debian unstable
• Compiler being used: gcc 16.2.0
• Non-default compiler options, if any : -std=c++26