The Lua library is used to add scripting support to Wireshark. Wireshark 4.2.x and earlier support Lua versions 5.1 and 5.2. Recent versions of Wireshark have added support for Lua 5.3 and 5.4 as well.
If this library isn’t already installed or available as a package for your platform, you can get it at https://www.lua.org/download.html.
We provide packages for Windows, patched for UTF-8 support, at https://dev-libs.wireshark.org/windows/packages/.