OpenTTD sources are still written in a way to work down to OSX 10.4 or so, as long as you can obtain a C++11 capable compiler. 10.9 is the minimal useful C++11 target using only Apple stuff out-of-the-box.
This release pipeline creates all the official release binaries,
and publishes them as artifacts. Currently it can only produce
nightlies and custom builds; stable/testing release binaries are
untested.
This commit also splits up the pipeline in small bits, to both
improve readability, and to share code with the CI pipeline where
possible.
Michael Lutz
Patric Stout
glx