fcitx-libs-dev binary package in Ubuntu Jammy amd64

 Fcitx is an input method framework with extension support, which provides
 an interface for entering characters of different scripts in applications
 using a variety of mapping systems.
 .
 It offers a pleasant and modern experience, with intuitive graphical
 configuration tools and customizable skins and mapping tables. It is
 highly modularized and extensible, with GTK+ 2/3 and Qt5 IM Modules, support
 for UIs based on Fbterm, pure Xlib, GTK+, or KDE, and a developer-friendly
 API.
 .
 This package provides the library development files.

Source package