The glibmm package is a set of C++ bindings for Glib. It provides non-UI API that is not available in standard C++ and makes it possible for gtkmm to wrap GObject-based APIs.
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Headers for developing programs using glibmm24
The glibmm24-devel package contains the static libraries and header files needed for developing glibmm applications.
Development tools for the typesafe signal framework for C++
The libsigc++20-devel package contains the static libraries and header files needed for development with libsigc++20.