I haven't had time to keep up with Timothy's changes, and he's created his own GitHub repository over here: https://github.com/Septercius/rpcemu-dev
You can download his latest releases from here: https://github.com/Septercius/rpcemu-dev/tags
This is Phillip Pearson's fork of RPCEmu. It contains the latest 0.9.1 code, plus Timothy Coltman's macOS patches, and some scripting to produce useful builds.
Binary releases in .dmg format can be found here. These are experimental, but have been verified to work by several people so far.
If these work for you -- and especially if they don't! -- please leave a note on the Stardot discussion thread or RPCEmu mailing list (see links below).
Report bugs on the GitHub issue tracker here.
If you're interested in helping out with RPCEmu, there is developer information on the main RPCEmu homepage. You're also welcome to submit pull requests directly to this repository, but unless they're just to the build tooling (buildmacos*.sh), please also start a thread on the RPCEmu mailing list.
Stardot discussion thread (VincentVega is Timothy Coltman, myelin is Phillip Pearson).