# Linker error when using Poco (with cmake on linux)

**URL:** <https://discourse.libcinder.org/t/linker-error-when-using-poco-with-cmake-on-linux/752>\
**Category:** Using Cinder\
**Created:** [June 28, 2017, 8:47pm UTC](https://discourse.libcinder.org/t/linker-error-when-using-poco-with-cmake-on-linux/752 "2017-06-28T20:47:34Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![petros](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.libcinder.org/petros/32/26_2.png) [@petros](https://discourse.libcinder.org/u/petros)\
**Post date:** [July 1, 2017, 9:03am UTC](https://discourse.libcinder.org/t/linker-error-when-using-poco-with-cmake-on-linux/752/2 "2017-07-01T09:03:05Z")

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Hi,

it would be very helpful to have some more info in order to debug this. Can you post the output of CMake during the configuration step? Is `${Poco_LIBRARIES}` actually defined and if yes can you post the output of this variable ? Also how do you try to find Poco ? i.e are you using some form of `FindPoco.cmake` ? Do the other libraries that you are using link properly and its just Poco that has this issue ?

Maybe we can be more of help if we have those additional infos!

Cheers,  
Petros

EDIT: Just a suggestion from the top of my head is to try this also  
[Linker errors: MongoDB CXX Driver on Linux](http://discourse.libcinder.org/t/linker-errors-mongodb-cxx-driver-on-linux/504/9?u=petros)

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