It’s worth reading the mac ports guide here, but here is my cut down cheat sheet of commands I actually use.
To install a port, e.g opencv
sudo port install opencv
To update ports definition list
sudo port selfupdate
Once, that’s finished you can update the outdated ports (this might take sometime depending on the number of updates)
sudo port upgrade outdated
or you can get a list of the outdated ports
and upgraded them manually
sudo port upgrade opencv
This should also upgrade dependencies.
To get a list of installed ports
To search for a port, eg, PHP you could try
port search php
This will give you hundreds of port that mention PHP in their description. You can filter this, for example
port search --name --glob 'php*'
will return only the ports that start with php.
port info opencv
returns information about the opencv port (the lastest version, so watch out if your ports are out of date). A list of variants can be obtained with
port variants opencv
A port variant can be installed using the syntax:
sudo port install opencv +java
This installs the variant of opencv with java bindings. To see which variant is installed type:
port installed opencv
this lists the variant installed, plus the inactive versions of the library.
If a port fails to build it might be worth cleaning up first by running
sudo port clean opencv
and trying again.
To find out what and where port has installed files run
port contents opencv
To remove a port you use either of
sudo port uninstall opencv sudo port uninstall --follow-dependents opencv
The second option removes the installed dependents as long as no other port is using them. If you don’t use the latter there will be a number of ports left on your system that you didn’t manually install. These are known as leaves and you can list or remove them with
port echo leaves sudo port uninstall leaves
You might need to repeat the process since uninstalling leaves may create new leaves!
Port will also leave the outdated ports on your system. To remove them use
sudo port uninstall inactive