MacPorts: port Unix applications to Mac OS/X
Seven versions for Mac OS/X 10.4 Tiger to OS/X 10.10 Yosemite
https://www.macports.org/
https://distfiles.macports.org/MacPorts ... semite.pkg
XQuartz: X Windows server for recent versions of Mac OS/X
Single version supports OS/X 10.6 Snow Leopard to OS/X 10.10 Yosemite.
http://xquartz.macosforge.org/
http://xquartz.macosforge.org/downloads ... -2.7.7.dmg
I installed both MacPorts and XQuartz on a year 2010 iMac (3.2 GHz Core i3 dual core, 16 GiB + OS/X 10.10 Yosemite), and then installed
xboard via MacPorts. Everything went smoothly.
Before using XQuartz for the first time, it's recommended to log out or reboot first so that certain XQuartz secondary information can worm its way through the system.
I note that starting XQuartz implicitly by first starting
xboard can be a bit clunky as XQuartz needs some time to itself to pull its brains together. Better is to start XQuartz explicitly first and maybe wait a few seconds before invoking
xboard.
Perhaps the above could be included in the
xboard documentation for Mac users, and particularly for Mac users who want to connect to an ICS via
xboard with their own engine.
On my 2006 Mac Pro running OS/X 10.7 Lion, I use Apple's X11.app instead of XQuartz, but I might change this as the X11.app is no longer supported.