Build Instructions/de

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This page covers building OpenSimulator from source code on multiple platforms. Please help us keep this page up to date as the project progresses. If you just want to run OpenSimulator, Download and run the binary build instead. In the most cases, you should be fine with binaries.


Obtaining the Source Code

Check out the Download page for instructions on obtaining an OpenSimulator source release. If you want the current development code (i.e. the Git master branch) see Developer_Documentation#Source_Code_Repository_Access.


Although this page is long, building is generally quite simple. See the BUILDING.txt file in the distribution itself for simplified instructions.


OpenSimulator 0.9.0.x requires either

You may also need nant tool.

OpenSimulator 0.9.1 requires either

Other platforms may have own mono distributions, or may need to compile mono on them.

Other libraries used by OpenSimulator can be found at our opensim-libs git repo.

git clone git://

You may need to compile them for your platform, in particular the unmanaged ones like Bullet or ODE native code libraries

MS Windows

Supported Compilers

  • Visual Studio Community 2017
  • Or any version that does support the .Net version. VS2010 can be used for OpenSimulator versions prior to 0.9.1, for example.

Compiling in an IDE

  1. Run "runprebuild.bat"
  2. Open the resulting "OpenSim.sln" in Visual Studio IDE.
  3. Select Debug or Release configuration
  4. Menu Build -> Build Solution.

Compiling at the Command Prompt

  1. Run "runprebuild.bat".
  2. Run the resulting "compile.bat" file.

Linux and Other Mono Platforms

Prepare to compile

To create the several project files run on the folder opensim:


Compile with Nant

On some mono versions, in particular old ones may need the use of nant to proper compile OpenSimulator, in that case just run:


Compile with xbuild

On mono versions you can just use xbuild.


xbuild is no longer recommended on mono 5.x, but currently still works (5.12)

on more recent monos Release configuration may give some performance gain, but you do lose some debug capabilities. to compile Release configuration:

 xbuild /p:Configuration=Release

Compile with msbuild

For Opensim 0.9.1 you can still use xbuild but Mono recommends the use of msbuild. You might need to install the package msbuild in addition to mono-complete for that.

Use xbuild on the other cases.

Recent improvements, specially on JIT runtime, justify compiling in Release configuration, but you do lose some debug capabilities.

to compile with Debug configuration:


to compile with Release configuration:

  msbuild /p:Configuration=Release


See Configuration.

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