OpenSim Core

NOTE: This repository cannot be used to build OpenSim 3.x or earlier. For OpenSim 3.x, see here.

OpenSim is software that lets users develop models of musculoskeletal structures and create dynamic simulations of movement, such as this one:

More information can be found at our websites:

OpenSim website; in particular, the support page.
SimTK project website

This repository contains the source code for OpenSim's C++ libraries, C++ examples, command-line applications (inverse kinematics, computed muscle control, etc.), and Java and Python wrapping. This repository does not include source code for the OpenSim GUI.

Simple example

Let's simulate a simple arm whose elbow is actuated by a muscle, using the C++ interface

C++

#include <OpenSim/OpenSim.h>
using namespace SimTK;
using namespace OpenSim;

int main() {
    Model model;
    model.setName("bicep_curl");
    model.setUseVisualizer(true);

    // Create two links, each with a mass of 1 kg, center of mass at the body's
    // origin, and moments and products of inertia of zero.
    OpenSim::Body* humerus = new OpenSim::Body("humerus", 1, Vec3(0), Inertia(0));
    OpenSim::Body* radius  = new OpenSim::Body("radius",  1, Vec3(0), Inertia(0));

    // Connect the bodies with pin joints. Assume each body is 1 m long.
    PinJoint* shoulder = new PinJoint("shoulder",
            // Parent body, location in parent, orientation in parent.
            model.getGround(), Vec3(0), Vec3(0),
            // Child body, location in child, orientation in child.
            *humerus, Vec3(0, 1, 0), Vec3(0));
    PinJoint* elbow = new PinJoint("elbow",
            *humerus, Vec3(0), Vec3(0), *radius, Vec3(0, 1, 0), Vec3(0));

    // Add a muscle that flexes the elbow.
    Millard2012EquilibriumMuscle* biceps = new
        Millard2012EquilibriumMuscle("biceps", 200, 0.6, 0.55, 0);
    biceps->addNewPathPoint("origin",    *humerus, Vec3(0, 0.8, 0));
    biceps->addNewPathPoint("insertion", *radius,  Vec3(0, 0.7, 0));

    // Add a controller that specifies the excitation of the muscle.
    PrescribedController* brain = new PrescribedController();
    brain->addActuator(*biceps);
    // Muscle excitation is 0.3 for the first 0.5 seconds, then increases to 1.
    brain->prescribeControlForActuator("biceps",
            new StepFunction(0.5, 3, 0.3, 1));

    // Add components to the model.
    model.addBody(humerus);    model.addBody(radius);
    model.addJoint(shoulder);  model.addJoint(elbow);
    model.addForce(biceps);
    model.addController(brain);

    // Add a console reporter to print the muscle fiber force and elbow angle.
    ConsoleReporter* reporter = new ConsoleReporter();
    reporter->set_report_time_interval(1.0);
    reporter->addToReport(biceps->getOutput("fiber_force"));
    reporter->addToReport(
        elbow->getCoordinate(PinJoint::Coord::RotationZ).getOutput("value"),
        "elbow_angle");
    model.addComponent(reporter);

    // Add display geometry.
    Ellipsoid bodyGeometry(0.1, 0.5, 0.1);
    bodyGeometry.setColor(Gray);
    // Attach an ellipsoid to a frame located at the center of each body.
    PhysicalOffsetFrame* humerusCenter = new PhysicalOffsetFrame(
        "humerusCenter", *humerus, Transform(Vec3(0, 0.5, 0)));
    humerus->addComponent(humerusCenter);
    humerusCenter->attachGeometry(bodyGeometry.clone());
    PhysicalOffsetFrame* radiusCenter = new PhysicalOffsetFrame(
        "radiusCenter", *radius, Transform(Vec3(0, 0.5, 0)));
    radius->addComponent(radiusCenter);
    radiusCenter->attachGeometry(bodyGeometry.clone());

    // Configure the model.
    State& state = model.initSystem();
    // Fix the shoulder at its default angle and begin with the elbow flexed.
    shoulder->getCoordinate().setLocked(state, true);
    elbow->getCoordinate().setValue(state, 0.5 * Pi);
    model.equilibrateMuscles(state);

    // Configure the visualizer.
    model.updMatterSubsystem().setShowDefaultGeometry(true);
    Visualizer& viz = model.updVisualizer().updSimbodyVisualizer();
    viz.setBackgroundType(viz.SolidColor);
    viz.setBackgroundColor(White);

    // Simulate.
    simulate(model, state, 10.0);

    return 0;
};

This code produces the following animation:

and prints the following information to the console:

[reporter]
              |   /model_/bice|               |
          time| ps|fiber_force|    elbow_angle|
--------------| --------------| --------------|
  0.000000e+00| 1.18096897e+00| 1.57079633e+00|
1.00000000e+00| 5.72750904e+01| 7.70664118e-01|
2.00000000e+00| 1.97284113e+01| 1.56804557e+00|
3.00000000e+00| 5.60904315e+01| 1.44198608e+00|
4.00000000e+00| 3.45483498e+01| 1.50834805e+00|
5.00000000e+00| 3.26037208e+01| 1.51802366e+00|
6.00000000e+00| 3.71360518e+01| 1.50212351e+00|
7.00000000e+00| 3.56985024e+01| 1.50718884e+00|
8.00000000e+00| 3.41860103e+01| 1.50791862e+00|
9.00000000e+00| 3.43416494e+01| 1.50672695e+00|
1.00000000e+01| 3.57847134e+01| 1.50716396e+00|

Expand to see Python and Matlab versions of the above example example:

Python

import opensim as osim 

arm = osim.Model()
arm.setName("bicep_curl")
arm.setUseVisualizer(True)

# ---------------------------------------------------------------------------
# Create two links, each with a mass of 1 kg, centre of mass at the body's
# origin, and moments and products of inertia of zero.
# ---------------------------------------------------------------------------

humerus = osim.Body("humerus",
                    1.0,
                    osim.Vec3(0),
                    osim.Inertia(0, 0, 0))
radius = osim.Body("radius",
                   1.0,
                   osim.Vec3(0),
                   osim.Inertia(0, 0, 0))

# ---------------------------------------------------------------------------
# Connect the bodies with pin joints. Assume each body is 1m long.
# ---------------------------------------------------------------------------

shoulder = osim.PinJoint("shoulder",
                         arm.getGround(), # PhysicalFrame
                         osim.Vec3(0),
                         osim.Vec3(0),
                         humerus, # PhysicalFrame
                         osim.Vec3(0, 1, 0),
                         osim.Vec3(0))

elbow = osim.PinJoint("elbow",
                      humerus, # PhysicalFrame
                      osim.Vec3(0),
                      osim.Vec3(0),
                      radius, # PhysicalFrame
                      osim.Vec3(0, 1, 0),
                      osim.Vec3(0))

# ---------------------------------------------------------------------------
# Add a muscle that flexes the elbow (actuator for robotics people).
# ---------------------------------------------------------------------------

biceps = osim.Millard2012EquilibriumMuscle("biceps",  # Muscle name
                                           200.0,  # Max isometric force
                                           0.6,  # Optimal fibre length
                                           0.55,  # Tendon slack length
                                           0.0)  # Pennation angle
biceps.addNewPathPoint("origin",
                       humerus,
                       osim.Vec3(0, 0.8, 0))

biceps.addNewPathPoint("insertion",
                       radius,
                       osim.Vec3(0, 0.7, 0))

# ---------------------------------------------------------------------------
# Add a controller that specifies the excitation of the muscle.
# ---------------------------------------------------------------------------

brain = osim.PrescribedController()
brain.addActuator(biceps)
brain.prescribeControlForActuator("biceps",
                                  osim.StepFunction(0.5, 3.0, 0.3, 1.0))

# ---------------------------------------------------------------------------
# Build model with components created above.
# ---------------------------------------------------------------------------

arm.addBody(humerus)
arm.addBody(radius)
arm.addJoint(shoulder) # Now required in OpenSim4.0
arm.addJoint(elbow)
arm.addForce(biceps)
arm.addController(brain)

# ---------------------------------------------------------------------------
# Add a console reporter to print the muscle fibre force and elbow angle.
# ---------------------------------------------------------------------------

# We want to write our simulation results to the console.
reporter = osim.ConsoleReporter()
reporter.set_report_time_interval(1.0)
reporter.addToReport(biceps.getOutput("fiber_force"))
elbow_coord = elbow.getCoordinate().getOutput("value")
reporter.addToReport(elbow_coord, "elbow_angle")
arm.addComponent(reporter)

# ---------------------------------------------------------------------------
# Add display geometry. 
# ---------------------------------------------------------------------------

bodyGeometry = osim.Ellipsoid(0.1, 0.5, 0.1)
bodyGeometry.setColor(osim.Vec3(0.5)) # Gray
humerusCenter = osim.PhysicalOffsetFrame()
humerusCenter.setName("humerusCenter")
humerusCenter.setParentFrame(humerus)
humerusCenter.setOffsetTransform(osim.Transform(osim.Vec3(0, 0.5, 0)))
humerus.addComponent(humerusCenter)
humerusCenter.attachGeometry(bodyGeometry.clone())

radiusCenter = osim.PhysicalOffsetFrame()
radiusCenter.setName("radiusCenter")
radiusCenter.setParentFrame(radius)
radiusCenter.setOffsetTransform(osim.Transform(osim.Vec3(0, 0.5, 0)))
radius.addComponent(radiusCenter)
radiusCenter.attachGeometry(bodyGeometry.clone())

# ---------------------------------------------------------------------------
# Configure the model.
# ---------------------------------------------------------------------------

state = arm.initSystem()
# Fix the shoulder at its default angle and begin with the elbow flexed.
shoulder.getCoordinate().setLocked(state, True)
elbow.getCoordinate().setValue(state, 0.5 * osim.SimTK_PI)
arm.equilibrateMuscles(state)

# ---------------------------------------------------------------------------
# Configure the visualizer.
# ---------------------------------------------------------------------------

viz = arm.updVisualizer().updSimbodyVisualizer()
viz.setBackgroundColor(osim.Vec3(0)) # white
viz.setGroundHeight(-2)

# ---------------------------------------------------------------------------
# Simulate.
# ---------------------------------------------------------------------------

manager = osim.Manager(arm)
state.setTime(0)
manager.initialize(state)
state = manager.integrate(10.0)

Matlab

%% Import Java libraries
import org.opensim.modeling.*

arm = Model();
arm.setName('bicep_curl');
arm.setUseVisualizer(true);

% ---------------------------------------------------------------------------
% Create two links, each with a mass of 1 kg, centre of mass at the body's
% origin, and moments and products of inertia of zero.
% ---------------------------------------------------------------------------

humerus = Body('humerus',...
                    1.0,...
                    Vec3(0),...
                    Inertia(0, 0, 0));
radius = Body('radius',...
                   1.0,...
                   Vec3(0),...
                   Inertia(0, 0, 0));

% ---------------------------------------------------------------------------
% Connect the bodies with pin joints. Assume each body is 1m long.
% ---------------------------------------------------------------------------

shoulder = PinJoint('shoulder',...
                         arm.getGround(),... % PhysicalFrame
                         Vec3(0),...
                         Vec3(0),...
                         humerus,... % PhysicalFrame
                         Vec3(0, 1, 0),...
                         Vec3(0));

elbow = PinJoint('elbow',...
                      humerus,... % PhysicalFrame
                      Vec3(0),...
                      Vec3(0),...
                      radius,... % PhysicalFrame
                      Vec3(0, 1, 0),...
                      Vec3(0));

% ---------------------------------------------------------------------------
% Add a muscle that flexes the elbow (actuator for robotics people).
% ---------------------------------------------------------------------------

biceps = Millard2012EquilibriumMuscle('biceps',...  % Muscle name
                                           200.0,...  % Max isometric force
                                           0.6,...  % Optimal fibre length
                                           0.55,...  % Tendon slack length
                                           0.0);  % Pennation angle
biceps.addNewPathPoint('origin',...
                       humerus,...
                       Vec3(0, 0.8, 0));

biceps.addNewPathPoint('insertion',...
                       radius,...
                       Vec3(0, 0.7, 0));

% ---------------------------------------------------------------------------
% Add a controller that specifies the excitation of the muscle.
% ---------------------------------------------------------------------------

brain = PrescribedController();
brain.addActuator(biceps);
brain.prescribeControlForActuator('biceps',...
                                  StepFunction(0.5, 3.0, 0.3, 1.0));

% ---------------------------------------------------------------------------
% Build model with components created above.
% ---------------------------------------------------------------------------

arm.addBody(humerus);
arm.addBody(radius);
arm.addJoint(shoulder); % Now required in OpenSim4.0
arm.addJoint(elbow);
arm.addForce(biceps);
arm.addController(brain);

% ---------------------------------------------------------------------------
% Add a console reporter to print the muscle fibre force and elbow angle.
% ---------------------------------------------------------------------------

% We want to write our simulation results to the console.
reporter = ConsoleReporter();
reporter.set_report_time_interval(1.0);
reporter.addToReport(biceps.getOutput('fiber_force'));
elbow_coord = elbow.getCoordinate().getOutput('value');
reporter.addToReport(elbow_coord, 'elbow_angle');
arm.addComponent(reporter);

% ---------------------------------------------------------------------------
% Add display geometry. 
% ---------------------------------------------------------------------------

bodyGeometry = Ellipsoid(0.1, 0.5, 0.1);
bodyGeometry.setColor(Vec3(0.5)); % Gray
humerusCenter = PhysicalOffsetFrame();
humerusCenter.setName('humerusCenter');
humerusCenter.setParentFrame(humerus);
humerusCenter.setOffsetTransform(Transform(Vec3(0, 0.5, 0)));
humerus.addComponent(humerusCenter);
humerusCenter.attachGeometry(bodyGeometry.clone());

radiusCenter = PhysicalOffsetFrame();
radiusCenter.setName('radiusCenter');
radiusCenter.setParentFrame(radius);
radiusCenter.setOffsetTransform(Transform(Vec3(0, 0.5, 0)));
radius.addComponent(radiusCenter);
radiusCenter.attachGeometry(bodyGeometry.clone());

% ---------------------------------------------------------------------------
% Configure the model.
% ---------------------------------------------------------------------------

state = arm.initSystem();
% Fix the shoulder at its default angle and begin with the elbow flexed.
shoulder.getCoordinate().setLocked(state, true);
elbow.getCoordinate().setValue(state, 0.5 * pi);
arm.equilibrateMuscles(state);

% ---------------------------------------------------------------------------
% Configure the visualizer
% ---------------------------------------------------------------------------

viz = arm.updVisualizer().updSimbodyVisualizer();
viz.setBackgroundColor(Vec3(0)); % white
viz.setGroundHeight(-2)

% ---------------------------------------------------------------------------
% Simulate.
% ---------------------------------------------------------------------------

manager = Manager(arm);
state.setTime(0);
manager.initialize(state);
state = manager.integrate(10.0);

---

Building from the source code

NOTE: On all platforms (Windows, OSX, Linux), you should build all OpenSim dependencies (Simbody, BTK, etc) with the same CMAKE_BUILD_TYPE (Linux) / CONFIGURATION (MSVC/Xcode) (e.g., Release, Debug) as OpenSim. Failing to do so may result in mysterious runtime errors like segfaults.

We support a few ways of building OpenSim:

On Windows using Microsoft Visual Studio. In a rush? Use these instructions.
On Mac OSX using Xcode. Need extended instructions? Use these instructions.
On Ubuntu using Unix Makefiles. In a rush? Use these instructions.

On Windows using Visual Studio

Get the dependencies

operating system: Windows 7, 8, or 10.
cross-platform build system: CMake >= 3.2
compiler / IDE: Visual Studio 2015 or 2017 (2017 requires CMake >= 3.9).
- The Community variant is sufficient and is free for everyone.
- Visual Studio 2015 and 2017 do not install C++ support by default.
  - 2015: During the installation you must select Custom, and check Programming Languages > Visual C++ > Common Tools for Visual C++ 2015. You can uncheck all other boxes. If you have already installed Visual Studio without C++ support, simply re-run the installer and select Modify. Alternatively, go to File > New > Project... in Visual Studio, select Visual C++, and click Install Visual C++ 2015 Tools for Windows Desktop.
  - 2017: During the installation, select the workload Desktop Development with C++.
  - If Visual Studio is installed without C++ support, CMake will report the following errors:
```
The C compiler identification is unknown
The CXX compiler identification is unknown
```
physics engine: Simbody >= 3.6. Two options:
- Let OpenSim get this for you using superbuild (see below).
- Build on your own.
C3D file support: Biomechanical-ToolKit Core. Two options:
- Let OpenSim get this for you using superbuild (see below).
- Build on your own.
command-line argument parsing: docopt.cpp. Two options:
- Let OpenSim get this for you using superbuild (see below); much easier!
- Build on your own (no instructions).
API documentation (optional): Doxygen >= 1.8.6
version control (optional): git. There are many options:
- Git for Windows, most advanced;
- TortoiseGit, intermediate; good for TortoiseSVN users;
- GitHub for Windows, easiest.
Bindings (optional): SWIG 3.0.8
- MATLAB scripting (optional): Java development kit >= 1.7.
  - Note: Older versions of MATLAB may use an older version of JVM. Run 'ver' in MATLAB to check MATLAB's JVM version (must be >= 1.7).
  - Note: Java development kit >= 9 requires CMake >= 3.10.
- Python scripting (optional): Python 2 >= 2.7 or Python 3 >= 3.5
  - Anaconda
- The choice between 32-bit/64-bit must be the same between Java, Python, and OpenSim.

Download the OpenSim-Core source code

Method 1: If you want to get going quickly, download the source code from https://github.com/opensim-org/opensim-core/releases, for the version of OpenSim you want. We'll assume you unzipped the source code into C:/opensim-core-source.
Method 2: If you plan on updating your OpenSim installation or you want to contribute back to the project, clone the opensim-core git repository into C:/opensim-core-source. If using TortoiseGit, open Windows Explorer, right-click in the window, select Git Clone..., and provide the following:
- URL: https://github.com/opensim-org/opensim-core.git.
- Directory: C:/opensim-core-source.
If using a Git Bash or Git Shell, run the following:
```
  $ git clone https://github.com/opensim-org/opensim-core.git C:/opensim-core-source
```
This will give you a bleeding-edge version of OpenSim-Core.

[Optional] Superbuild: download and build OpenSim dependencies

Open the CMake GUI.
In the field Where is the source code, specify C:/opensim-core-source/dependencies.
In the field Where to build the binaries, specify a directory under which to build dependencies. Let's say this is C:/opensim-core-dependencies-build.
Click the Configure button.
1. Visual Studio 2015: Choose the Visual Studio 14 2015 generator (may appear as Visual Studio 14).
2. Visual Studio 2017: Choose the Visual Studio 15 2017 generator.
3. To build as 64-bit, select the generator with Win64 in the name.
4. Click Finish.
Where do you want to install OpenSim dependencies on your computer? Set this by changing the CMAKE_INSTALL_PREFIX variable. Let's say this is C:/opensim-core-dependencies-install.
Variables named SUPERBUILD_<dependency-name> allow you to selectively download dependencies. By default, all dependencies are downloaded, configured and built.
Click the Configure button again. Then, click Generate to make Visual Studio project files in the build directory.
Go to the build directory you specified in step 3 using the command:
```
 cd C:/opensim-core-dependencies-build
```
Use CMake to download, compile and install the dependencies:
```
 cmake --build . --config RelWithDebInfo
```
Alternative values for --config in this command are:
- Debug: debugger symbols; no optimizations (more than 10x slower). Library names end with _d.
- Release: no debugger symbols; optimized.
- RelWithDebInfo: debugger symbols; optimized. Bigger but not slower than Release; choose this if unsure.
- MinSizeRel: minimum size; optimized.
You must run this command for each of the configurations you plan to use with OpenSim (see below). You should run this command for the release configuration last to ensure that you use the release version of the command-line applications instead of the slow debug versions.
- Note: Superbuild attempts to determine when dependencies are out of date but is not always successful. It is therefore recommended to build all dependencies from scratch when updating your installation.
If you like, you can now remove the directory used for building dependencies (c:/opensim-core-dependencies-build).

Configure and generate project files

Open the CMake GUI.
In the field Where is the source code, specify C:/opensim-core-source.
In the field Where to build the binaries, specify something like C:/opensim-core-build, or some other path that is not inside your source directory. This is not where we are installing OpenSim-Core; see below.
Click the Configure button.
1. Visual Studio 2015: Choose the Visual Studio 14 or Visual Studio 14 2015 generator.
2. Visual Studio 2017: Choose the Visual Studio 15 2017 generator.
3. To build as 64-bit, select the generator with Win64 in the name. The choice between 32-bit/64-bit must be the same across all dependencies.
4. Click Finish.
Where do you want to install OpenSim-Core on your computer? Set this by changing the CMAKE_INSTALL_PREFIX variable. We'll assume you set it to C:/opensim-core. If you choose a different installation location, make sure to use yours where we use C:/opensim-core below.
Tell CMake where to find dependencies. This depends on how you got them.
- Superbuild: Set the variable OPENSIM_DEPENDENCIES_DIR to the root directory you specified with superbuild for installation of dependencies. In our example, it would be c:/opensim-core-dependencies-install.
- Obtained on your own:
  1. Simbody: Set the SIMBODY_HOME variable to where you installed Simbody (e.g., C:/Simbody).
  2. BTK: Set the variable BTK_DIR to the directory containing BTKConfig.cmake. If the root directory of your BTK installation is C:/BTKCore-install, then set this variable to C:/BTKCore-install/share/btk-0.4dev.
  3. docopt.cpp. Set the variable docopt_DIR to the directory containing docopt-config.cmake. If the root directory of your docopt.cpp installation is C:/docopt.cpp-install, then set this variable to C:/docopt.cpp-install/lib/cmake.
Set the remaining configuration options.
- BUILD_API_EXAMPLES to compile C++ API examples.
- BUILD_TESTING to ensure that OpenSim works correctly. The tests take a while to build; if you want to build OpenSim quickly, you can turn this off.
- BUILD_JAVA_WRAPPING if you want to access OpenSim through MATLAB or Java; see dependencies above.
- BUILD_PYTHON_WRAPPING if you want to access OpenSim through Python; see dependencies above. CMake sets PYTHON_* variables to tell you the Python version used when building the wrappers.
- OPENSIM_PYTHON_VERSION to choose if the Python wrapping is built for Python 2 or Python 3.
- BUILD_API_ONLY if you don't want to build the command-line applications.
Click the Configure button again. Then, click Generate to make Visual Studio project files in the build directory.

Build and install

Open C:/opensim-core-build/OpenSim.sln in Visual Studio.
Select your desired Solution configuration from the drop-down at the top.
- Debug: debugger symbols; no optimizations (more than 10x slower). Library names end with _d.
- Release: no debugger symbols; optimized.
- RelWithDebInfo: debugger symbols; optimized. Bigger but not slower than Release; choose this if unsure.
- MinSizeRel: minimum size; optimized.
You at least want release libraries (the last 3 count as release), but you can have debug libraries coexist with them. To do this, go through the installation process twice, once for each of the two configurations. You should install the release configuration last to ensure that you use the release version of the command-line applications instead of the slow debug versions.
Build the API documentation. This is optional, and you can only do this if you have Doxygen. Build the documentation by right-clicking doxygen and selecting Build.
Build the libraries, etc. by right-clicking ALL_BUILD and selecting Build.
Run the tests by right-clicking RUN_TESTS_PARALLEL and selecting Build.
Install OpenSim-Core by right-clicking INSTALL and selecting Build.

Set environment variables

In order to use the OpenSim-Core command-line applications or use OpenSim-Core libraries in your own application, you must add the OpenSim-Core bin/ directory to your PATH environment variable.

In the Windows toolbar (Windows 10), Start screen (Windows 8) or Start menu (Windows 7), search environment.
Select Edit the system environment variables.
Click Environment Variables....
Under System variables, click Path, then click Edit.
Add C:/opensim-core/bin; to the front of of the text field. Don't forget the semicolon!

For the impatient (Windows)

Get Visual Studio Community 2015 or 2017.
- 2015: Choose Custom installation, then choose Programming Languages -> Visual C++.
- 2017: Choose the workload Desktop Development with C++.
Get git from here.
- Choose Use Git from the Windows Command Prompt.
Get CMake from here.
- Choose Add CMake to the system PATH for all users.
Get Chocolatey from here.
In PowerShell, run as Administrator:
```
choco install python2 jdk8 swig
```

In PowerShell (if using Visual Studio 2017, replace 14 2015 with 15 2017):

git clone https://github.com/opensim-org/opensim-core.git
mkdir opensim_dependencies_build
cd .\opensim_dependencies_build
cmake ..\opensim-core\dependencies                             `
      -G"Visual Studio 14 2015 Win64"                          `
      -DCMAKE_INSTALL_PREFIX="..\opensim_dependencies_install"
cmake --build . --config RelWithDebInfo -- /maxcpucount:8
cd ..
mkdir opensim_build
cd .\opensim_build
cmake ..\opensim-core                                              `
      -G"Visual Studio 14 2015 Win64"                              `
      -DCMAKE_INSTALL_PREFIX="..\opensim_install"                  `
      -DOPENSIM_DEPENDENCIES_DIR="..\opensim_dependencies_install" `
      -DBUILD_JAVA_WRAPPING=ON                                     `
      -DBUILD_PYTHON_WRAPPING=ON                                   `
      -DWITH_BTK=ON                                  
cmake --build . --config RelWithDebInfo -- /maxcpucount:8
ctest --build-config RelWithDebInfo --parallel 8
cmake --build . --config RelWithDebInfo --target install -- /maxcpucount:8

Note: Please add <FULL-DIR>\opensim_install\bin to your PATH variable as per these instructions.
Example: If opensim_install is in C:, add C:\opensim_install\bin to your PATH.

On Mac OSX using Xcode

For Mac OSX 10.11 El Capitan

Get Xcode from the App store. Open Xcode and Agree to license agreement. To Agree to to the license agreement, you may need to type in Terminal:

sudo xcodebuild -license

If you already have Xcode, update it to 7.3, or the latest version.

Then, in Terminal, copy and paste commands below, line by line, one at a time. The first line installs the Homebrew package manager; omit this line if you already have Homebrew. Be sure the output doesn't contain errors.

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
brew install cmake swig
brew cask install java
git clone https://github.com/opensim-org/opensim-core.git
mkdir opensim_dependencies_build
cd opensim_dependencies_build
cmake ../opensim-core/dependencies \
      -DCMAKE_INSTALL_PREFIX="~/opensim_dependencies_install" \
      -DCMAKE_BUILD_TYPE=RelWithDebInfo
make -j8
cd ..
mkdir opensim_build
cd opensim_build
cmake ../opensim-core \
      -DCMAKE_INSTALL_PREFIX="~/opensim_install" \
      -DCMAKE_BUILD_TYPE=RelWithDebInfo \
      -DBUILD_PYTHON_WRAPPING=ON \
      -DBUILD_JAVA_WRAPPING=ON \
      -DOPENSIM_DEPENDENCIES_DIR="~/opensim_dependencies_install" \
      -DWITH_BTK=ON
make -j8
ctest -j8

Extended Instructions for OSX

Get the dependencies

operating system: Mac OSX 10.11 El Capitan or newer.
cross-platform build system: CMake >= 3.2
compiler / IDE: Xcode >= 7.3 (the latest version), through the Mac App Store.
physics engine: Simbody >= 3.6. Two options:
- Let OpenSim get this for you using superbuild (see below).
- Build on your own.
C3D file support: Biomechanical-ToolKit Core. Two options:
- Let OpenSim get this for you using superbuild (see below).
- Build on your own.
command-line argument parsing: docopt.cpp. Two options:
- Let OpenSim get this for you using superbuild (see below); much easier!
- Build on your own (no instructions).
API documentation (optional): Doxygen >= 1.8.6
version control (optional): git.
- Xcode Command Line Tools gives you git on the command line.
- GitHub for Mac, for a simple-to-use GUI.
Bindings (optional): SWIG 3.0.8
- MATLAB scripting (optional): Java development kit >= 1.7.
  - Note: Older versions of MATLAB may use an older version of JVM. Run 'ver' in MATLAB to check MATLAB's JVM version (must be >= 1.7).
  - Note: Java development kit >= 9 requires CMake >= 3.10.
- Python scripting (optional): Python 2 >= 2.7 or Python 3 >= 3.5
  - Mac OSX comes with Python, but you could also use:
  - brew install python,
  - Anaconda

You can get most of these dependencies using Homebrew:

$ brew install cmake doxygen swig

Download the OpenSim-Core source code

Method 1; If you want to get going quickly, download the source code from https://github.com/opensim-org/opensim-core/releases, for the version of OpenSim you want. We'll assume you unzipped the source code into ~/opensim-core-source.
Method 2: If you plan on updating your OpenSim installation or you want to contribute back to the project, clone the opensim-core git repository into ~/opensim-core-source. Run the following in a terminal, or find a way to run the equivalent commands in a GUI client:
```
  $ git clone https://github.com/opensim-org/opensim-core.git ~/opensim-core-source
```
This will give you a bleeding-edge version of OpenSim-Core.

[Optional] Superbuild: download and build OpenSim dependencies

Open the CMake GUI.
In the field Where is the source code, specify ~/opensim-core-source/dependencies.
In the field Where to build the binaries, specify a directory under which to build dependencies. Let's say this is ~/opensim-core-dependencies-build.
Click the Configure button. Choose Xcode. Click Finish.
Where do you want to install OpenSim dependencies on your computer? Set this by changing the CMAKE_INSTALL_PREFIX variable. Let's say this is ~/opensim-core-dependencies-install.
Variables named SUPERBUILD_<dependency-name> allow you to selectively download dependencies. By default, all dependencies are downloaded, configured and built.
Click the Configure button again. Then, click Generate to make Xcode files in the build directory.
Open ~/opensim-core-dependencies/build/OpenSimDependencies.xcodeproj in Xcode.
Choose your Build Configuration for the ALL_BUILD Scheme by pressing Command-Shift , (or, Command-LessThan), or navigating to Product -> Scheme -> Edit Scheme...; and changing the Build Configuration field.
- Debug: debugger symbols; no optimizations (more than 10x slower). Library names end with _d.
- Release: no debugger symbols; optimized.
- RelWithDebInfo: debugger symbols; optimized. Bigger but not slower than Release; choose this if unsure.
- MinSizeRel: minimum size; optimized.
You must build each of the configurations you plan to use with OpenSim (see below). You should install the release configuration last to ensure that you use the release version of the command-line applications instead of the slow debug versions.
Compile. Run the Scheme ALL_BUILD by clicking the play button in the upper left. If necessary, change the build configuration (previous step) and run ALL_BUILD again.
- Note: Superbuild attempts to determine when dependencies are out of date but is not always successful. It is therefore recommended to build all dependencies from scratch when updating your installation.

Configure and generate project files

Open the CMake GUI.
In the field Where is the source code, specify ~/opensim-core-source.
In the field Where to build the binaries, specify something like ~/opensim-core-build, or some other path that is not inside your source directory. This is not where we are installing OpenSim-Core; see below.
Click the Configure button. Choose Xcode. Click Finish.
Where do you want to install OpenSim-Core on your computer? Set this by changing the CMAKE_INSTALL_PREFIX variable. We'll assume you set it to ~/opensim-core. If you choose a different installation location, make sure to use yours where we use ~/opensim-core below. You should not use /usr/, /usr/local/, etc. (because our installation does not yet conform to the FHS).
Tell CMake where to find dependencies. This depends on how you got them.
- Superbuild: Set the variable OPENSIM_DEPENDENCIES_DIR to the root directory you specified with superbuild for installation of dependencies. In our example, it would be ~/opensim-core-dependencies-install.
- Obtained on your own:
  1. Simbody: Set the SIMBODY_HOME variable to where you installed Simbody (e.g., ~/simbody). If you installed Simbody using brew, then CMake will find Simbody automatically.
  2. BTK: Set the BTK_DIR variable to the directory containing BTKConfig.cmake. If you installed BTK in ~/BTKCore-install, then set BTK_DIR to ~/BTKCore-install/share/btk-0.4dev
  3. docopt.cpp. Set the variable docopt_DIR to the directory containing docopt-config.cmake. If the root directory of your docopt.cpp installation is ~/docopt.cpp-install, then set this variable to ~/docopt.cpp-install/lib/cmake.
Set the remaining configuration options.
- BUILD_API_EXAMPLES to compile C++ API examples.
- BUILD_TESTING to ensure that OpenSim works correctly. The tests take a while to build; if you want to build OpenSim quickly, you can turn this off.
- BUILD_JAVA_WRAPPING if you want to access OpenSim through MATLAB or Java; see dependencies above.
- BUILD_PYTHON_WRAPPING if you want to access OpenSim through Python; see dependencies above. CMake sets PYTHON_* variables to tell you the Python version used when building the wrappers.
- OPENSIM_PYTHON_VERSION to choose if the Python wrapping is built for Python 2 or Python 3.
- BUILD_API_ONLY if you don't want to build the command-line applications.
Click the Configure button again. Then, click Generate to create Xcode project files in the build directory.

Build and install

Open ~/opensim-core-build/OpenSim.xcodeproj in Xcode.
Choose your Build Configuration for the ALL_BUILD Scheme by pressing Command-Shift , (or, Command-LessThan), or navigating to Product -> Scheme -> Edit Scheme...; and changing the Build Configuration field.
- Debug: debugger symbols; no optimizations (more than 10x slower). Library names end with _d.
- Release: no debugger symbols; optimized.
- RelWithDebInfo: debugger symbols; optimized. Bigger but not slower than Release; choose this if unsure.
- MinSizeRel: minimum size; optimized.
You at least want release libraries (the last 3 count as release), but you can have debug libraries coexist with them. To do this, go through the installation process twice, once for each of the two configurations. You should install the release configuration last to ensure that you use the release version of the command-line applications instead of the slow debug versions.
Compile. Run the Scheme ALL_BUILD by clicking the play button in the upper left.
Test. Click on ALL_BUILD in the upper left, and select RUN_TESTS_PARALLEL. Change the Build Configuration of this Scheme to the same as you used for ALL_BUILD (using the same instructions as above). Click the play button.
Build the API documentation. This is optional, and you can only do this if you have Doxygen. Click on the current Scheme (RUN_TESTS_PARALLEL) and select doxygen. Click the play button.
Install. Click on the current Scheme (RUN_TESTS_PARALLEL or doxygen), and select install. Click the play button.

Set environment variables

Executables. If you want to run OpenSim-Core's executables from anywhere on your computer, you must update your PATH. Open a terminal and type:
```
 $ echo 'export PATH=~/opensim-core/bin:$PATH' >> ~/.bash_profile
```

Your changes will only take effect in new terminal windows.

On Ubuntu using Unix Makefiles

Get the dependencies

Most dependencies can be obtained via the Ubuntu software repositories; especially if you are using Ubuntu 16.04 or later. On each line below, we show the Ubuntu package names for the dependencies. You can find instructions for specific Ubuntu versions under 'For the impatient' below.

cross-platform build system: CMake >= 3.2; cmake-gui.
compiler: gcc >= 4.9; g++-4.9, or Clang >= 3.4; clang-3.4.
physics engine: Simbody >= 3.6. Two options:
- Let OpenSim get this for you using superbuild (see below).
- Build on your own.
C3D file support: Biomechanical-ToolKit Core. Two options:
- Let OpenSim get this for you using superbuild (see below).
- Build on your own.
command-line argument parsing: docopt.cpp. Two options:
- Let OpenSim get this for you using superbuild (see below); much easier!
- Build on your own (no instructions).
API documentation (optional): Doxygen >= 1.8.6; doxygen.
version control (optional): git; git.
Bindings (optional): SWIG 3.0.8; swig.
- MATLAB scripting (optional): Java development kit >= 1.7; openjdk-7-jdk.
  - Note: Older versions of MATLAB may use an older version of JVM. Run 'ver' in MATLAB to check MATLAB's JVM version (must be >= 1.7).
  - Note: Java development kit >= 9 requires CMake >= 3.10.
- Python scripting (optional): Python 2 >= 2.7 or Python 3 >= 3.5; python-dev.

For example, you could get the required dependencies (except Simbody) via:

$ sudo apt-get install cmake-gui g++-4.9

And you could get all the optional dependencies via:

$ sudo apt-get install doxygen git swig openjdk-7-jdk python-dev

Download the OpenSim-Core source code

Method 1; If you want to get going quickly, download the source code from https://github.com/opensim-org/opensim-core/releases, for the version of OpenSim you want. We'll assume you unzipped the source code into ~/opensim-core-source.
Method 2: If you plan on updating your OpenSim installation or you want to contribute back to the project, clone the opensim-core git repository into C:/opensim-core-source. Run the following in a terminal:
```
  $ git clone https://github.com/opensim-org/opensim-core.git ~/opensim-core-source
```
This will give you a bleeding-edge version of OpenSim-Core.

[Optional] Superbuild: download and build OpenSim dependencies

Open the CMake GUI.
In the field Where is the source code, specify ~/opensim-core-source/dependencies.
In the field Where to build the binaries, specify a directory under which to build dependencies. Let's say this is ~/opensim-core-dependencies-build.
Click the Configure button. Choose Unix Makefiles. Click Finish.
Where do you want to install OpenSim dependencies on your computer? Set this by changing the CMAKE_INSTALL_PREFIX variable. Let's say this is ~/opensim-core-dependencies-install.
Variables named SUPERBUILD_<dependency-name> allow you to selectively download dependencies. By default, all dependencies are downloaded, configured and built.
Choose your build type by setting CMAKE_BUILD_TYPE to one of the following:
- Debug: debugger symbols; no optimizations (more than 10x slower). Library names end with _d.
- Release: no debugger symbols; optimized.
- RelWithDebInfo: debugger symbols; optimized. Bigger but not slower than Release; choose this if unsure.
- MinSizeRel: minimum size; optimized.
You must perform the superbuild procedure for each of the build types you plan to use with OpenSim (see below). You might want to use different build directories for each build type, though you can use the same install directory for all build types. You should install the release build type last to ensure that you use the release version of the command-line applications instead of the slow debug versions.
Click the Configure button again. Then, click Generate to make Unix Makefiles in the build directory.
Open a terminal and navigate to the build directory.
```
 $ cd ~/opensim-core-dependencies-build
```
Compile. Use the -jn flag to build using n concurrent jobs (potentially in parallel); this will greatly speed up your build. For example:
```
 $ make -j8
```
- Note: Superbuild attempts to determine when dependencies are out of date but is not always successful. It is therefore recommended to build all dependencies from scratch when updating your installation.
If necessary, repeat this whole procedure for other build types.

Configure and generate project files

Open the CMake GUI.
In the field Where is the source code, specify ~/opensim-core-source.
In the field Where to build the binaries, specify something like ~/opensim-core-build, or some other path that is not inside your source directory. This is not where we are installing OpenSim-Core; see below.
Click the Configure button. Choose Unix Makefiles. Click Finish.
Where do you want to install OpenSim-Core on your computer? Set this by changing the CMAKE_INSTALL_PREFIX variable. We'll assume you set it to ~/opensim-core. If you choose a different installation location, make sure to use yours where we use ~/opensim-core below. You should not use /usr/, /usr/local/, etc. (because our installation does not yet conform to the FHS), but /opt/ is okay.
Tell CMake where to find dependencies. This depends on how you got them.
- Superbuild: Set the variable OPENSIM_DEPENDENCIES_DIR to the root directory you specified with superbuild for installation of dependencies. In our example, it would be ~/opensim-core-dependencies-install.
- Obatained on your own:
  1. Simbody: Set the SIMBODY_HOME variable to where you installed Simbody (e.g., ~/simbody).
  2. BTK: Set the BTK_DIR variable to the directory containing BTKConfig.cmake. If you installed BTK in ~/BTK-install, then set BTK-DIR to ~/BTK-install/share/btk-0.4dev.
  3. docopt.cpp. Set the variable docopt_DIR to the directory containing docopt-config.cmake. If the root directory of your docopt.cpp installation is ~/docopt.cpp-install, then set this variable to ~/docopt.cpp-install/lib/cmake.
Choose your build type by setting CMAKE_BUILD_TYPE to one of the following:
- Debug: debugger symbols; no optimizations (more than 10x slower). Library names end with _d.
- Release: no debugger symbols; optimized.
- RelWithDebInfo: debugger symbols; optimized. Bigger but not slower than Release; choose this if unsure.
- MinSizeRel: minimum size; optimized.
You at least want release libraries (the last 3 count as release), but you can have debug libraries coexist with them. To do this, go through the installation process twice, once for each of the two build types. It is typical to use a different build directory for each build type (e.g., ~/opensim-core-build-debug and ~/opensim-core-build-release). You should install the release build type last to ensure that you use the release version of the command-line applications instead of the slow debug versions.
Set the remaining configuration options.
- BUILD_API_EXAMPLES to compile C++ API examples.
- BUILD_TESTING to ensure that OpenSim works correctly. The tests take a while to build; if you want to build OpenSim quickly, you can turn this off.
- BUILD_JAVA_WRAPPING if you want to access OpenSim through MATLAB or Java; see dependencies above.
- BUILD_PYTHON_WRAPPING if you want to access OpenSim through Python; see dependencies above.
- OPENSIM_PYTHON_VERSION to choose if the Python wrapping is built for Python 2 or Python 3.
- BUILD_API_ONLY if you don't want to build the command-line applications.
- OPENSIM_COPY_DEPENDENCIES to decide if Simbody and BTK are copied into the OpenSim installation; you want this off if you're installing OpenSim into /usr/ or /usr/local/.
Click the Configure button again. Then, click Generate to create Makefiles in the build directory.

Build and install

Open a terminal and navigate to the build directory.
```
 $ cd ~/opensim-core-build
```
Build the API documentation. This is optional, and you can only do this if you have Doxygen.
```
 $ make doxygen
```
Compile. Use the -jn flag to build using n concurrent jobs (potentially in parallel); this will greatly speed up your build. For example:
```
 $ make -j8
```
Run the tests.
```
 $ ctest -j8
```
Install (to ~/opensim-core).
```
 $ make -j8 install
```

Set environment variables

Executables. Add OpenSim-Core's executables to the path so you can access them from any directory on your computer.
```
 $ echo 'export PATH=~/opensim-core/bin:$PATH' >> ~/.bashrc
```

Your changes will only take effect in new terminal windows.

For the impatient (Ubuntu)

Ubuntu 14.04 Trusty Tahr

In Terminal --

sudo add-apt-repository --yes ppa:george-edison55/cmake-3.x
sudo apt-add-repository --yes ppa:fenics-packages/fenics-exp
sudo apt-get update
sudo apt-get --yes install git cmake cmake-curses-gui clang-3.6 \
                           freeglut3-dev libxi-dev libxmu-dev \
                           liblapack-dev swig3.0 python-dev \
                           openjdk-7-jdk
sudo rm -f /usr/bin/cc /usr/bin/c++
sudo ln -s /usr/bin/clang-3.6 /usr/bin/cc
sudo ln -s /usr/bin/clang++-3.6 /usr/bin/c++
export JAVA_HOME=/usr/lib/jvm/java-7-openjdk-amd64
git clone https://github.com/opensim-org/opensim-core.git
mkdir opensim_dependencies_build
cd opensim_dependencies_build
cmake ../opensim-core/dependencies/ \
      -DCMAKE_INSTALL_PREFIX='~/opensim_dependencies_install' \
      -DCMAKE_BUILD_TYPE=RelWithDebInfo
make -j8
cd ..
mkdir opensim_build
cd opensim_build
cmake ../opensim-core \
      -DCMAKE_INSTALL_PREFIX="~/opensim_install" \
      -DCMAKE_BUILD_TYPE=RelWithDebInfo \
      -DOPENSIM_DEPENDENCIES_DIR="~/opensim_dependencies_install" \
      -DBUILD_PYTHON_WRAPPING=ON \
      -DBUILD_JAVA_WRAPPING=ON \
      -DWITH_BTK=ON
make -j8
ctest -j8
make -j8 install

Ubuntu 15.10 Wily Werewolf

In Terminal --

sudo apt-add-repository --yes ppa:fenics-packages/fenics
sudo apt-get update
sudo apt-get --yes install git cmake cmake-curses-gui \
                           freeglut3-dev libxi-dev libxmu-dev \
                           liblapack-dev swig3.0 python-dev \
                           openjdk-8-jdk
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
git clone https://github.com/opensim-org/opensim-core.git
mkdir opensim_dependencies_build
cd opensim_dependencies_build
cmake ../opensim-core/dependencies/ \
      -DCMAKE_INSTALL_PREFIX='~/opensim_dependencies_install' \
      -DCMAKE_BUILD_TYPE=RelWithDebInfo
make -j8
cd ..
mkdir opensim_build
cd opensim_build
cmake ../opensim-core \
      -DCMAKE_INSTALL_PREFIX="~/opensim_install" \
      -DCMAKE_BUILD_TYPE=RelWithDebInfo \
      -DOPENSIM_DEPENDENCIES_DIR="~/opensim_dependencies_install" \
      -DBUILD_PYTHON_WRAPPING=ON \
      -DBUILD_JAVA_WRAPPING=ON \
      -DWITH_BTK=ON
make -j8
ctest -j8
make -j8 install

Ubuntu 16.04 Xenial Xerus AND Ubuntu 16.10 Yakkety Yak

In Terminal --

sudo apt-get update
sudo apt-get --yes install git cmake cmake-curses-gui \
                           freeglut3-dev libxi-dev libxmu-dev \
                           liblapack-dev swig python-dev \
                           openjdk-8-jdk
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
git clone https://github.com/opensim-org/opensim-core.git
mkdir opensim_dependencies_build
cd opensim_dependencies_build
cmake ../opensim-core/dependencies/ \
      -DCMAKE_INSTALL_PREFIX='~/opensim_dependencies_install' \
      -DCMAKE_BUILD_TYPE=RelWithDebInfo
make -j8
cd ..
mkdir opensim_build
cd opensim_build
cmake ../opensim-core \
      -DCMAKE_INSTALL_PREFIX="~/opensim_install" \
      -DCMAKE_BUILD_TYPE=RelWithDebInfo \
      -DOPENSIM_DEPENDENCIES_DIR="~/opensim_dependencies_install" \
      -DBUILD_PYTHON_WRAPPING=ON \
      -DBUILD_JAVA_WRAPPING=ON \
      -DWITH_BTK=ON
make -j8
ctest -j8
make -j8 install

Note: You may need to add <FULL-DIR>/opensim_install/bin to your PATH variable as per these instructions.
Example: If opensim_install is in your home directory:

    $ echo 'export PATH=~/opensim_install/bin:$PATH' >> ~/.bashrc

Name		Name	Last commit message	Last commit date
Latest commit History 13,186 Commits
.github		.github
Applications		Applications
Bindings		Bindings
DevelopmentProposals		DevelopmentProposals
OpenSim		OpenSim
Vendors		Vendors
cmake		cmake
dependencies		dependencies
doc		doc
.gitattributes		.gitattributes
.gitignore		.gitignore
.opensim-core.nuspec		.opensim-core.nuspec
.travis.yml		.travis.yml
CHANGELOG.md		CHANGELOG.md
CMakeLists.txt		CMakeLists.txt
CONTRIBUTING.md		CONTRIBUTING.md
DEVELOPING.md		DEVELOPING.md
LICENSE.txt		LICENSE.txt
NOTICE		NOTICE
README.md		README.md
appveyor.yml		appveyor.yml

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OpenSim Core

Table of contents

Simple example

Building from the source code

On Windows using Visual Studio

Get the dependencies

Download the OpenSim-Core source code

[Optional] Superbuild: download and build OpenSim dependencies

Configure and generate project files

Build and install

Set environment variables

For the impatient (Windows)

On Mac OSX using Xcode

For Mac OSX 10.11 El Capitan

Extended Instructions for OSX

Get the dependencies

Download the OpenSim-Core source code

[Optional] Superbuild: download and build OpenSim dependencies

Configure and generate project files

Build and install

Set environment variables

On Ubuntu using Unix Makefiles

Get the dependencies

Download the OpenSim-Core source code

[Optional] Superbuild: download and build OpenSim dependencies

Configure and generate project files

Build and install

Set environment variables

For the impatient (Ubuntu)

Ubuntu 14.04 Trusty Tahr

Ubuntu 15.10 Wily Werewolf

Ubuntu 16.04 Xenial Xerus AND Ubuntu 16.10 Yakkety Yak

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dfraska/opensim-core

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OpenSim Core

Table of contents

Simple example

Building from the source code

On Windows using Visual Studio

Get the dependencies

Download the OpenSim-Core source code

[Optional] Superbuild: download and build OpenSim dependencies

Configure and generate project files

Build and install

Set environment variables

For the impatient (Windows)

On Mac OSX using Xcode

For Mac OSX 10.11 El Capitan

Extended Instructions for OSX

Get the dependencies

Download the OpenSim-Core source code

[Optional] Superbuild: download and build OpenSim dependencies

Configure and generate project files

Build and install

Set environment variables

On Ubuntu using Unix Makefiles

Get the dependencies

Download the OpenSim-Core source code

[Optional] Superbuild: download and build OpenSim dependencies

Configure and generate project files

Build and install

Set environment variables

For the impatient (Ubuntu)

Ubuntu 14.04 Trusty Tahr

Ubuntu 15.10 Wily Werewolf

Ubuntu 16.04 Xenial Xerus AND Ubuntu 16.10 Yakkety Yak

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