I tried the latter after installing MacPorts and it seems to be hanging at 'Building gtk2' after 30 minutes.

I must have done something wrong. Any advice?

Paul

[ Dozens of command lines not pasted below ]

--->  Attempting to fetch gtk2-2.24.31_0+quartz.darwin_16.x86_64.tbz2 from https://packages.macports.org/gtk2

--->  Attempting to fetch gtk2-2.24.31_0+quartz.darwin_16.x86_64.tbz2 from http://sea.us.packages.macports.org/macports/packages/gtk2

--->  Attempting to fetch gtk2-2.24.31_0+quartz.darwin_16.x86_64.tbz2 from http://lil.fr.packages.macports.org/gtk2

--->  Fetching distfiles for gtk2

--->  Attempting to fetch gtk+-2.24.31.tar.xz from https://distfiles.macports.org/gtk2

--->  Verifying checksums for gtk2                                              

--->  Extracting gtk2

--->  Applying patches to gtk2

--->  Configuring gtk2

--->  Building gtk2