# Unit 6 - Fatal error: rrbot\_hardware\_interface/rrbot\_hardware\_interface.hpp: No such file or directory

**URL:** <https://get-help.theconstruct.ai/t/unit-6-fatal-error-rrbot-hardware-interface-rrbot-hardware-interface-hpp-no-such-file-or-directory/19349>\
**Category:** Uncategorized\
**Created:** [September 20, 2022, 1:20pm UTC](https://get-help.theconstruct.ai/t/unit-6-fatal-error-rrbot-hardware-interface-rrbot-hardware-interface-hpp-no-such-file-or-directory/19349 "2022-09-20T13:20:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![asgerdl](https://get-help.theconstruct.ai/user_avatar/get-help.theconstruct.ai/asgerdl/32/5287_2.png) [@asgerdl](https://get-help.theconstruct.ai/u/asgerdl)\
**Post date:** [September 20, 2022, 1:20pm UTC](https://get-help.theconstruct.ai/t/unit-6-fatal-error-rrbot-hardware-interface-rrbot-hardware-interface-hpp-no-such-file-or-directory/19349/1 "2022-09-20T13:20:51Z")

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I am doing the ROS Control course and am at the unit: 6 - Hardware Abstraction Layer  
I have issues compiling my package using catkin\_make:

 ![Screenshot from 2022-09-20 15-17-43](https://get-help.robotigniteacademy.com/uploads/default/original/2X/7/745dc24c52dbc3ee0304afc7b077a49b5123a995.jpeg)

It states that the directory for the header file, cannot be found in on the first line in the .cpp file, but I cannot see how this is the case.

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<div class="post-metadata">

**Author:** ![rzegers](https://get-help.theconstruct.ai/user_avatar/get-help.theconstruct.ai/rzegers/32/7010_2.png) [@rzegers](https://get-help.theconstruct.ai/u/rzegers)\
**Post date:** [September 20, 2022, 1:57pm UTC](https://get-help.theconstruct.ai/t/unit-6-fatal-error-rrbot-hardware-interface-rrbot-hardware-interface-hpp-no-such-file-or-directory/19349/2 "2022-09-20T13:57:06Z")

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Hello @asgerdl, let’s first have a look at the **CMakeLists.txt** file. Could you please post it here?

Thanks,

Roberto

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<div class="post-metadata">

**Author:** ![asgerdl](https://get-help.theconstruct.ai/user_avatar/get-help.theconstruct.ai/asgerdl/32/5287_2.png) [@asgerdl](https://get-help.theconstruct.ai/u/asgerdl)\
**Post date:** [September 20, 2022, 2:05pm UTC](https://get-help.theconstruct.ai/t/unit-6-fatal-error-rrbot-hardware-interface-rrbot-hardware-interface-hpp-no-such-file-or-directory/19349/3 "2022-09-20T14:05:14Z")

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Hallo, Yes I finally found the mistake, which was in CMakeLists.txt.  
I had written:  
include\_directories(  
[SPACE]include  
${catkin\_INCLUDE\_DIRS}  
)  
but it should have been:  
include\_directories(  
[TAB]include  
${catkin\_INCLUDE\_DIRS}  
)

Very easy to miss, for the naked eye! 🙂