Callback Framework for C++
The source packages are available from the GNOME download site.
Whenever possible, you should use the official binary packages approved by the supplier of your operating system, such as your Linux distribution. For instance, Ubuntu Linux, Debian Linux and Fedora Linux have official libsigc++ packages.
pkg-config should be used to build software that depends on libsigc++.
libsigc++ is built and tested for a standards-compliant C++ compiler. Luckily, the recent versions of all major C++ compilers are now sufficiently standards-compliant.
libsigc++ version 2.5.1 and later require a C++11-compliant compiler.