# Imported Third Party Projects

This page provides an overview of the imported third-party projects that VTK depends
on, grouped by import method.

The lists below references project directory name found in either the `ThirdParty`
or `Utilities` source sub-directory available in the [VTK GitLab][] repository where additional
details may be found.

[VTK GitLab]: https://gitlab.kitware.com/vtk/vtk

## Using the `update.sh` framework

The following list shows third-party projects that were imported using the `update.sh`
framework described in the [](thirdparty.md) document:

  * cgns
  * cli11
  * diy2
  * doubleconversion
  * eigen
  * exodusII
  * expat
  * exprtk
  * fast_float
  * fides
  * fmt
  * freetype
  * gl2ps
  * glew
  * h5part
  * hdf5
  * ioss
  * jpeg
  * jsoncpp
  * kissfft
  * KWIML
  * KWSys
  * libharu
  * libproj
  * libxml2
  * loguru
  * lz4
  * lzma
  * MetaIO
  * mpi4py
  * netcdf
  * nlohmannjson
  * ogg
  * pegtl
  * png
  * pugixml
  * sqlite
  * theora
  * tiff
  * utf8
  * verdict
  * xdmf3
  * zfp
  * zlib

<!--
The list above was generated using the following script:

```
cd VTK/ThirdParty
for path in $(ls -d -1 */) $(ls -d -1 ../Utilities/*/); do
  path=${path%/*}  # "dir1/dir2/Dir3/" -> "dir1/dir2/Dir3"
  project=${path##*/}  # "dir1/dir2/Dir3" -> "Dir3"
  if [[ -f "$path/update.sh" ]]; then
    echo "  * [$project]($path/update.sh)"
  fi
done | sort --ignore-case
```
-->

## Using `git submodule`

The following third-party project were imported as git submodules:

  * vtkm

<!--
The list above was generated using the following script:

```
cd VTK/ThirdParty

root_src_dir=$(git rev-parse --show-toplevel)

for submodule in $(git config --file ${root_src_dir}/.gitmodules --get-regexp path | awk '{ print $2 }'); do
  # Ignore submodules not associated with the "ThirdParty" directory
  if ! [[ "$submodule" =~ ^ThirdParty* ]]; then
    continue
  fi
  project=$(echo $submodule | cut -d/ -f2) # "ThirdParty/vtkm/vtkvtkm/vtk-m" -> "vtkm"
  echo "  * $project"
done
```
-->

## Using `copy`

The following third-party projects were imported by copying the files:

  * vpic
  * xdmf2

<!--
The list above was generated using the following script:

```
root_src_dir=$(git rev-parse --show-toplevel)
submodule_paths=$(git config --file ${root_src_dir}/.gitmodules --get-regexp path | awk '{ print $2 }')

for path in $(ls -d -1 */); do
  path=${path%/*}  # "dir1/dir2/Dir3/" -> "dir1/dir2/Dir3"
  project=${path##*/}  # "dir1/dir2/Dir3" -> "Dir3"

  # List project that are neither imported through "update.sh" or git submodule
  if [ ! -f "$path/update.sh" ] && [[ "$submodule_paths" != *"ThirdParty/$project"* ]]; then
    echo "  * $project"
  fi
done | sort --ignore-case
```
-->