libsigc++ implements a typesafe callback system for standard C++. It allows you to define signals and to connect those signals to any callback function, either global or a member function, regardless of whether it is static or virtual. This is the libsigc++-3.0 API, which installs in parallel with libsigc++-2.0. The API is not significantly different, but the implementation is far simpler, using variadic templates instead of generating C++ code from .m4 filessystem.
libsigc++ implements a typesafe callback system for standard C++. It allows you to define signals and to connect those signals to any callback function, either global or a member function, regardless of whether it is static or virtual. This is the libsigc++-3.0 API, which installs in parallel with libsigc++-2.0. The API is not significantly different, but the implementation is far simpler, using variadic templates instead of generating C++ code from .m4 filessystem.
To install libsigcxx3, run the following command in macOS terminal (Applications->Utilities->Terminal)
sudo port install libsigcxx3
To see what files were installed by libsigcxx3, run:
port contents libsigcxx3
To later upgrade libsigcxx3, run:
sudo port selfupdate && sudo port upgrade libsigcxx3
Reporting an issue on MacPorts Trac
The MacPorts Project uses a system called Trac to file tickets to report bugs and enhancement requests.
Though anyone may search Trac for tickets, you must have a GitHub account in order to login to Trac to create tickets.