The installation uses MacPorts.
You can use the binary release (only x86_64 version available, tested on OSX 10.7, installs into /Applications/MacPorts/ /opt/openmodelica/bin/ and /opt/openmodelica/share/doc/omc/). Note that there is no uninstaller (see MacPorts guide for some hints on what is safe to remove). Also note that make is not included in this package so you will also need to install XCode3, which is available for free with a registration, or XCode4 (which is available for free to 10.7 users).
For fewer potential issues at the cost of a longer time to install, you can use the source package in our MacPorts repository. After setting up a MacPorts installation, run (as root):
echo rsync://build.openmodelica.org/macports/ >> /opt/local/etc/macports/sources.conf # assuming you installed into /opt/local
port selfupdate
port install openmodelica-devel # Status of nightly builds port install openmodelica-devel -qt # If you only want the OpenModelica core
You can also install openmodelica-release for the latest point-release or openmodelica for the latest release marked stable.
To start using the OpenModelica, launch one of the executables or start reading documentation. The following command should give a hint on where to start looking.
port contents openmodelica-devel | egrep "/bin|app$|pdf$|txt$" | grep -v omlibrary
To update OpenModelica once it has been installed:
port selfupdate
port upgrade openmodelica-devel
If you have any questions about the installation, feel free to ask either Martin or the forums.