Installation of OpenCASCADE

OpenCASCADE is a software development kit (SDK) intended for development of applications dealing with 3D CAD data, freely available in open source. It includes a set of C++ class libraries providing services for 3D surface and solid modeling, visualization, data exchange and rapid application development.

Below is a short summary of instructions on how to compile and install OpenCASCADE community edition by hand (for the case you wish to do so).

How to compile and install OpenCASCADE

Get a clone of the OCE repository:

git clone git://
It is a good practice to build in a separate directory:
mkdir build
cd build
cmake -D OCE_INSTALL_PREFIX=/path/to/where/you/want/oce \
      -D OCE_DISABLE_X11=ON \
make install
This will turn off some packages we don't need. The default package options also work, though.

Interfacing deal.II to OpenCASCADE

Support for OpenCASCADE will be enabled automatically if a system wide installation of OpenCASCADE can be found. To use a self compiled version, specify

when invoking cmake. Alternatively, you can also set an environment variable OPENCASCADE_DIR (valid alternatives are also OCC_DIR and OCE_DIR) and cmake will pick up this path.

You can override the autodetection by manually setting


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