If you want to limit the mcs compiler to be a strict 2.0 compiler, use the -langversion:ISO-2 flag, further options are available for each language version, inlcuding minor version starting with version 7.1.Įxperimental features that are being brainstormed for future versions of C# when using -langversion: experimental are also available Specification

Pattern matching (limited to simple usage).Expression-bodied constructors, finalizers and accessors.The ( mcs) compiler defaults to the latest language specification available.Īll C# 2.0 features are supported including:Īll C# 3.0 features are supported including:Īll C# 4.0 features are supported including:Īll C# 5.0 feature are supported including:Īll C# 6.0 features are supported including: The compiler can be used as a service by using the class in the assembly.īoth a console and GUI read-eval-print shells are distributed as part of Mono 2.2 and are both built on top of the above service. Starting with Mono 2.2 it supports a Compiler Service that applications can consume. On a IBM ThinkPad t40 it compiles 18,000 lines of C# code per second. The compiler is routinely used to compile Mono, roughly four million lines of C# code and a few other projects. The compiler is able to compile itself and many more C# programs (there is a test suite included that you can use). They still exist (as scripts only) to ease the migration path to mcs but we strongly recommend to use mcs.īug reports or any compiler issue can be filed on our bug tracking system. It replaces all previous runtime specific compilers (gmcs, dmcs, smcs). Starting with Mono version 2.11 a new unified compiler mcs is available. dmcs: compiler to target the 4.0 mscorlib.smcs: compiler to target the 2.1 mscorlib, to build Moonlight applications.gmcs: compiler to target the 2.0 mscorlib.Historically, various version of same compiler existed. The Mono C# compiler is considered feature complete for C# 1.0, C# 2.0, C# 3.0, C# 4.0, C# 5.0 and C# 6.0 ( ECMA) and it has partial support for C# 7.

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