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# OpenFOAM&reg; ThirdParty

OpenFOAM depends to a certain extent on third-party libraries
(*opensource only*). It also provides some interfaces to *opensource* or
*proprietary* libraries. This third-party package contains configurations and
scripts for building third-party packages. It should normally only be used in
conjunction with the corresponding OpenFOAM version.

## Configuration of Third-Party Versions

For most of the build scripts, the default software version
is provided by an appropriate OpenFOAM `etc/config.sh/...` entry.
This approach avoids duplicate entries for the default versions and
ensures the best overall consistency between the OpenFOAM installation
and its corresponding third-party installation.

Nonethess, the distributed make scripts can generally be used for a
variety of versions of the third-party libraries, with the software
version specified on the command-line.

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## Before Starting

0. Review the [system requirements](http://www.openfoam.com/documentation/system-requirements.php)
   and decide on the following:
   * compiler type/version (you may need a third-party compiler installation).
   * MPI type/version.
   * ParaView type/version.
   * CMake type/version, ...
1. Adjust the OpenFOAM `etc/bashrc`, `etc/config.sh/...` or equivalent
   `prefs.sh` files to reflect your preferred configuration.
2. Source the updated OpenFOAM environment

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## Building

Many components of ThirdParty are *optional* or are invoked
automatically as part of the top-level OpenFOAM `Allwmake`.
Nonetheless it may be necessary or useful to build particular
ThirdParty components prior to building OpenFOAM itself.

### Build Sequence

1. `makeGcc` _or_ `makeLLVM` *(optional)*
2. `makeCmake`  *(optional)*
3. `Allwmake`
   - This will be automatically invoked by the top-level OpenFOAM `Allwmake`.
4. `makeParaView`  *(optional but highly recommended)*
5. Any other additional optional components


### Build Details

More details can be found the ThirdParty ./BUILD.md information.


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## Additional OpenFOAM Links

- [Download](http://www.openfoam.com/releases) and
  [installation instructions](http://www.openfoam.com/download/installation.php)
- [Documentation](http://www.openfoam.com/documentation)
- [Reporting bugs/issues (including bugs/suggestions/feature requests) in OpenFOAM+](http://www.openfoam.com/code/bug-reporting.php)
- [Collaborative and Community-based Developments](http://www.openfoam.com/services/community-projects.php)
- [Contacting OpenCFD](http://www.openfoam.com/contact)

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Copyright 2016 OpenCFD Ltd