Compiling a C# Mono project under Mac OS

An already complete Mono C# software project, working on both Windows and Mac, just need to be compiled under Mac OS. We'd like to have a final standalone executable for Mac, containing all the Mono dependency and a single additional library (already in the project, but currently external to the executable). Additionally we'd need to have the final compilation script, to be able to compile it again, in case we need to modify the software code in the future. The software works flawlessly via command line "mono ExecutableName", so we expect it will be working even after been compiled. The software interface contains Italian language, but there is no need to understand the language to compile it.