Equivalent of CPack for cross-platform packaging?

[matty0ung]

I help maintain an open-source cross-platform (using Qt) desktop application. Currently we build it with CMake and CPack. I have been looking at using Meson instead. Compilation etc seems to work fine but I can't see much advice about packaging. I found advice for Mac and Linux Binaries. But I don't see any how-to for creating a Windows installer (or for creating RPM or deb packages for Linux).

For the avoidance of doubt, I'm looking to create on each platform (Windows / Mac / Linux) a free-standing download that a non-technical user can install. In other words, on Windows and Mac, I can't assume that the user will already have a particular package management system installed.

What's the best approach?

[jpakkane]

One simple way is to do the same "install into a prefix dir and package that" thing with Msicreator, which uses WiX behind the scenes.