# What's is the different between default type extension and superbuild type extension?

**URL:** <https://discourse.slicer.org/t/whats-is-the-different-between-default-type-extension-and-superbuild-type-extension/9737>\
**Category:** Development\
**Created:** [January 8, 2020, 8:24am UTC](https://discourse.slicer.org/t/whats-is-the-different-between-default-type-extension-and-superbuild-type-extension/9737 "2020-01-08T08:24:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![leemoncn](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/leemoncn/32/5706_2.png) [@leemoncn](https://discourse.slicer.org/u/leemoncn)\
**Post date:** [January 8, 2020, 8:24am UTC](https://discourse.slicer.org/t/whats-is-the-different-between-default-type-extension-and-superbuild-type-extension/9737/1 "2020-01-08T08:24:34Z")

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I read the wiki documents,but i can’t find what’s is the different between default type extension and superbuild type extension?

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [January 8, 2020, 2:08pm UTC](https://discourse.slicer.org/t/whats-is-the-different-between-default-type-extension-and-superbuild-type-extension/9737/2 "2020-01-08T14:08:57Z")

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You use superbuild type extension if your extension depends on third-party libraries that you need to build as part of the build process (for example, SlicerRT extension builds Plastimatch library; SlicerElastix extension builds Elastix library). For all other cases, you can use the simpler default template.

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**Author:** ![Luther](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/luther/32/5602_2.png) [@Luther](https://discourse.slicer.org/u/Luther)\
**Post date:** [January 9, 2020, 10:43am UTC](https://discourse.slicer.org/t/whats-is-the-different-between-default-type-extension-and-superbuild-type-extension/9737/3 "2020-01-09T10:43:58Z")

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Thanks @lassoan for the information