To compile C# source code in a Unity Project, the Unity Editor uses a C# compiler. The C# compiler that Unity uses depends on the Scripting Runtime Version option in the Player Settings (menu: Edit > Project SettingsA broad collection of settings which allow you to configure how Physics, Audio, Networking, Graphics, Input and many other areas of your Project behave. More info
See in Glossary > Player > Other Settings).
|Scripting Runtime Version||C# compiler||C# language version|
|.NET 3.5 equivalent||mcsThe Mono C# compiler file format. More info
See in Glossary
|.NET 4.6 equivalent||Roslyn||C# 7.3|
The Editor passes a default set of options to the C# compiler. To pass additional options in your project, see the documentation for Platform Dependent Compilation.
2018–11–07 Page published
Roslyn compiler exposed in 2018.3 NewIn20183
C# compiler Roslyn compiler NewIn20183