# Legato Config Tree undefined reference to 'le\_cfg\_...'

**URL:** <https://forum.legato.io/t/legato-config-tree-undefined-reference-to-le-cfg/5937>\
**Category:** Legato Application Framework\
**Created:** [August 19, 2021, 3:25pm UTC](https://forum.legato.io/t/legato-config-tree-undefined-reference-to-le-cfg/5937 "2021-08-19T15:25:09Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\
**Post date:** [August 20, 2021, 1:31am UTC](https://forum.legato.io/t/legato-config-tree-undefined-reference-to-le-cfg/5937/4 "2021-08-20T01:31:34Z")

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You can refer to following sample to use config tree:

> <https://github.com/legatoproject/legato-af/blob/master/apps/sample/eCallDemo/eCallAppComponent/eCallApp.c>

> **[legato-af/apps/test/framework/configTree at master · legatoproject/legato-af](https://github.com/legatoproject/legato-af/tree/master/apps/test/framework/configTree)**
>
> master/apps/test/framework/configTree

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_[View the full topic](https://forum.legato.io/t/legato-config-tree-undefined-reference-to-le-cfg/5937)._