Configure Visual Studio 2012 to use Mono's C# compiler instead of the default csc.exe

_x000D_ _x000D_ I work in a game engine called Unity3D whose scripting system runs on Mono. By default Unity uses a modified version of Mono to develop/compile script. I am in the process of setting up my Visual Studio to better work with Unity projects and its various gotchas with regards to .NET. I am currently stuck trying to configure Visual Studio to handle compilation of my various assemblies. Unity uses a modified version of an old Mono compiler, and as such I cannot use the default csc.exe to build assemblies. My ideal solution would be for Visual Studios's Build Solution option to process my projects with a compiler I point it to, perhaps through configuring the MSBuild (.csproj) file? Falling short of this is there another way I can build from within Visual Studio using Mono's mcs/gmcs compiler?