Nuanti C++ Compiler For More .NET On Linux
Written by Michael Larabel in Compiler on 13 April 2012 at 09:25 AM EDT. 6 Comments
While Mono is widely known for bringing Microsoft's .NET to Linux, there also exists a separate compiler that's about supporting the Microsoft C++/CLI ECMA-372 language specification under Linux.

The Nuanti compiler is described as a portable C++/CLI compiler built atop LLVM/Clang. While it's not too widely known, the compiler itself is a few years old and has evolved into a self-hosting toolchain for porting applications to run on Mono, SilverLight, Mac OS X, and Linux.

From the blog post of one of the Nuanti developers describing this work, "There are two codegen modes: (1) fully managed .NET bytecode, and (2) native optimized machine code with hooks into the Mono runtime for invocations. There’s some flexibility to mix and match the two. Sometimes it’s handy to call into an existing managed library from your C++ application and this use case is simple as adding an import header and calling the methods you need. No bindings or wrappers, and if using a runtime like Mono the stack is garbage collected behind the scenes."

The developer, Alp Toker, mentions there's a CIL back-end using the LLVM code generation infrastructure to "generate native-looking SDK-quality assemblies out of all kinds of unmanaged code." The compiler also goes beyond the ECMA-372 specification with support for dynamic types from C# 4.0, LINQ from C++, express trees, and DLR syntax trees. The Nuanti compiler is also self-hosting.

Using this compiler the developers even ported User Mode Linux and WebKit to Microsoft's Silverlight platform. "Our main focus has been in-game ‘scripting’ and IOS applications. Going forward we’re concentrating more on open web standards and JavaScript for the platform but this continues to be a fun R&D project with often surprising uses, and it’ll be a fun story to tell."

The Nuanti C++/CLI compiler was presented yesterday at the European LLVM Developers' Conference so hopefully soon we will get the slides on the presentation and/or a video.

Meanwhile, at the end of March the big Mono 2.11 was released.

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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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