XQurtz on Mojave Crashing On Startup

[Chris Jones]

On 08/02/2019 12:52 am, jackcf via macports-users wrote:
> 
> That seems to have fix it.
> Don't understand why it was sill working with Yosemite though.

Blind luck, nothing more.

Your where forcing the use of some application specific libc++ version, 
of known origin and age (but based on the name came from as far back as 
OSX10.6) onto applications it was never intended for. To be honest its 
quite surprising it worked at all.

DYLD_LIBRARY_PATH is a sledge hammer. Use with extreme care....