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Nimrod is a compiled, garbage-collected systems programming language which has an excellent productivity/performance ratio. Nimrod's design focuses on efficiency, expressiveness, elegance (in the order of priority).

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Octocat-spinner-32 bin
Octocat-spinner-32 build
Octocat-spinner-32 compiler
Octocat-spinner-32 config
Octocat-spinner-32 doc
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Octocat-spinner-32 lib
Octocat-spinner-32 tests
Octocat-spinner-32 tinyc
Octocat-spinner-32 tools
Octocat-spinner-32 web
Octocat-spinner-32 .gitignore
Octocat-spinner-32 contributors.txt
Octocat-spinner-32 copying.txt
Octocat-spinner-32 install.txt
Octocat-spinner-32 koch.nim
Octocat-spinner-32 koch.nimrod.cfg
Octocat-spinner-32 readme.txt
Octocat-spinner-32 start.bat
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Nimrod Compiler

This repo contains the Nimrod compiler, Nimrod's stdlib, tools and documentation.


Compiling the Nimrod compiler is quite straightforward. Because the Nimrod compiler itself is written in the Nimrod programming language the C source of an older version of the compiler are needed to bootstrap the latest version. The C sources are available in a separate repo here.

Pre-compiled snapshots of the compiler are also available on Nimbuild. Your platform however may not currently be built for.

The compiler currently supports the following platform and architecture combinations:

  • Windows (Windows XP or greater) - x86 and x86_64
  • Linux (most, if not all, distributions) - x86, x86_64, ppc64 and armv6l
  • Mac OS X 10.04 or higher - x86, x86_64 and ppc64

In reality a lot more are supported, however they are not tested regularly.

To build from source you will need:

  • gcc 3.x or later recommended. Other alternatives which may work are: clang, Visual C++, Intel's C++ compiler
  • git or wget

If you are on a fairly modern *nix system, the following steps should work:

$ git clone git://
$ cd Nimrod
$ git clone --depth 1 git://
$ cd csources && sh
$ cd ..
$ bin/nimrod c koch
$ ./koch boot -d:release

koch install [dir] may then be used to install Nimrod, or you can simply add it to your PATH.

The above steps can be performed on Windows in a similar fashion, the build.bat and build64.bat (for x86_64 systems) are provided to be used instead of

Getting help

A forum is available if you have any questions, and you can also get help in the IRC channel on Freenode in #nimrod. If you ask questions on StackOverflow use the nimrod tag.


The compiler and the standard library are licensed under the MIT license, except for some modules where the documentation suggests otherwise. This means that you can use any license for your own programs developed with Nimrod, allowing you to create commercial applications.

Read copying.txt for more details.

Copyright (c) 2004-2014 Andreas Rumpf. All rights reserved.

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