The Tatung Einstein is a CP/M compatible platform, so the same base library can be used, but extra functionalities are available.
zcc +cpm -lm -leinstein -oPROGRAM.COM program.c
The emulators are able to run programs loaded from disk images.
The EDIP program is able to create a new disk image inserting your own programs. Be sure to create upper case files to make them readeble by the Einstein operating system.