# Building Slicer offline for inclusion in Fedora

**URL:** https://discourse.slicer.org/t/building-slicer-offline-for-inclusion-in-fedora/1838
**Category:** Support
**Created:** [January 14, 2018, 5:54pm UTC](https://discourse.slicer.org/t/building-slicer-offline-for-inclusion-in-fedora/1838 "2018-01-14T17:54:23Z")
**Posts on this page:** 1
**Showing post:** 2

<div class="post-metadata">

### Author: ![jcfr](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jcfr/32/17825_2.png) [@jcfr](https://discourse.slicer.org/u/jcfr)
#### Post date: [January 14, 2018, 6:01pm UTC](https://discourse.slicer.org/t/building-slicer-offline-for-inclusion-in-fedora/1838/2 "2018-01-14T18:01:04Z")

</div>

Hi @sanjayankur31

Thanks for reaching out.

> do not permit internet access during builds for security reasons

Makes sense. To support this use case, the build system supports using system version and/or passing local version of most of the dependencies.

For example, to support building against system python, you could configure with `-DSlicer_USE_SYSTEM_python:BOOL=ON`.

And for using a local build of VTK, you could pass `-DVTK_DIR:PATH=/path/to/VTK-build`.

Looking at the different `External_*` files found in [Slicer/SuperBuild](https://github.com/Slicer/Slicer/tree/master/SuperBuild) directory should give some hint.

To address and discuss remaining issues, you could also join our weekly hangout. It will be advertised in this topic: [Weekly Hangout for Slicer user and developer - #50](https://discourse.slicer.org/t/weekly-hangout-for-slicer-user-and-developer/53/50)

---

_[View the full topic](https://discourse.slicer.org/t/building-slicer-offline-for-inclusion-in-fedora/1838)._