Installing/MacOS Build w Homebrew
If you come from a previous macports installation you need to uninstall sumo and fox toolkit first:
sudo port uninstall sumo sudo port uninstall fox
If you did not already install homebrew, do so by invoking
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
make sure your homebrew db is up-to-date
Install SUMO stable via the SUMO Brew Formula:
brew tap dlr-ts/sumo brew install sumo
After the installation you need to log out/in in order to let X11 start automatically, when calling a gui-based application like "sumo-gui". (Alternatively, you may start X11 manually by pressing cmd-space and entering "XQuartz").