# Documentation install for Utilities/Doxygen problem wiht 9.1.0
**URL:** https://discourse.vtk.org/t/documentation-install-for-utilities-doxygen-problem-wiht-9-1-0/7955
**Category:** Support
**Tags:** doxygen
**Created:** [March 1, 2022, 10:14pm UTC](https://discourse.vtk.org/t/documentation-install-for-utilities-doxygen-problem-wiht-9-1-0/7955 "2022-03-01T22:14:20Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@BlueKnight7](https://discourse.vtk.org/u/BlueKnight7)
#### Post date: [March 1, 2022, 10:14pm UTC](https://discourse.vtk.org/t/documentation-install-for-utilities-doxygen-problem-wiht-9-1-0/7955/1 "2022-03-01T22:14:21Z")
I built Vtk version 9.1.0 with Docs on. When I try to do the “make install” everything up to the following point installs, then the install breaks:
CMake Error at Utilities/Doxygen/cmake\_install.cmake:80 (file):
file INSTALL cannot find
“/home/r/Downloads/Vtk/VTK-9.1.0/Build1/Utilities/Doxygen/doc/html”:
No such file or directory.
Call Stack (most recent call first):
cmake\_install.cmake:1119 (include)
There is no doc directory under Utilities/Doxygen
I’m guessing that either the CMake build is messed up or I missed a configuration option.
Can one of the developers shed some light on this issue?
---
### Author:  [@Christos\_Tsolakis](https://discourse.vtk.org/u/Christos_Tsolakis)
#### Post date: [March 2, 2022, 1:24pm UTC](https://discourse.vtk.org/t/documentation-install-for-utilities-doxygen-problem-wiht-9-1-0/7955/2 "2022-03-02T13:24:18Z")
Not sure if the omission of Doxygen target from `all` is intended but you can compile the Documentation by running
```auto
make DoxygenDoc
```
`make install` should then work as expected.
---
### Author:  [@ben.boeckel](https://discourse.vtk.org/u/ben.boeckel)
#### Post date: [March 2, 2022, 7:15pm UTC](https://discourse.vtk.org/t/documentation-install-for-utilities-doxygen-problem-wiht-9-1-0/7955/3 "2022-03-02T19:15:55Z")
It is intended because it is never “clean” and runs on every build.
---
### Author:  [@BlueKnight7](https://discourse.vtk.org/u/BlueKnight7)
#### Post date: [March 2, 2022, 10:03pm UTC](https://discourse.vtk.org/t/documentation-install-for-utilities-doxygen-problem-wiht-9-1-0/7955/4 "2022-03-02T22:03:17Z")
This started to work and then it appears to have put itself into an infinite loop. After 20 minutes I did a control-C to reach the following:
QGDict::hashAsciiKey: Invalid null key
QGDict::hashAsciiKey: Invalid null key^Cmake[3]: \*\*\* [Utilities/Doxygen/CMakeFiles/DoxygenDoc] Interrupt
make[2]: \*\*\* [Utilities/Doxygen/CMakeFiles/DoxygenDoc.dir/all] Interrupt
make[1]: \*\*\* [Utilities/Doxygen/CMakeFiles/DoxygenDoc.dir/rule] Interrupt
make: \*\*\* [DoxygenDoc] Interrupt
---
### Author:  [@Christos\_Tsolakis](https://discourse.vtk.org/u/Christos_Tsolakis)
#### Post date: [March 3, 2022, 1:42am UTC](https://discourse.vtk.org/t/documentation-install-for-utilities-doxygen-problem-wiht-9-1-0/7955/5 "2022-03-03T01:42:01Z")
> QGDict::hashAsciiKey: Invalid null key
Possible doxygen [bug](https://github.com/doxygen/doxygen/issues/7068) ?
I tried with doxygen versions 1.8.17 and 1.9.1 and worked as expected.
---
### Author:  [@BlueKnight7](https://discourse.vtk.org/u/BlueKnight7)
#### Post date: [March 3, 2022, 10:16pm UTC](https://discourse.vtk.org/t/documentation-install-for-utilities-doxygen-problem-wiht-9-1-0/7955/6 "2022-03-03T22:16:49Z")
I’m using version 1.8.5. Will see about updating to something newer. May take a few days.
---
### Author:  [@Christos\_Tsolakis](https://discourse.vtk.org/u/Christos_Tsolakis)
#### Post date: [March 3, 2022, 10:20pm UTC](https://discourse.vtk.org/t/documentation-install-for-utilities-doxygen-problem-wiht-9-1-0/7955/7 "2022-03-03T22:20:09Z")
Ok let me know if you have any further problems. By the way, official (binary) releases for doxygen can be found [here](https://sourceforge.net/projects/doxygen/files/)