# How to disable particular default module
**URL:** https://discourse.itk.org/t/how-to-disable-particular-default-module/1840
**Category:** Beginner Questions
**Created:** [May 6, 2019, 1:58am UTC](https://discourse.itk.org/t/how-to-disable-particular-default-module/1840 "2019-05-06T01:58:17Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@mihail.isakov](https://discourse.itk.org/u/mihail.isakov)
#### Post date: [May 6, 2019, 1:58am UTC](https://discourse.itk.org/t/how-to-disable-particular-default-module/1840/1 "2019-05-06T01:58:17Z")
Hello,
I would like disable some default modules, specially GDCM / GDCMIO, in my application i use own stuff for DICOM and also GDCM-clone library, so i don’t need the module.
Is it possible with some command line argument? Tried in _cmake-gui_, but it was somewhat complicated, many click are required, i need this for 4 builds.
Thanks.
---
### Author:  [@fbudin](https://discourse.itk.org/u/fbudin)
#### Post date: [May 6, 2019, 12:36pm UTC](https://discourse.itk.org/t/how-to-disable-particular-default-module/1840/2 "2019-05-06T12:36:45Z")
Hi Mihail,
You have to first disable `ITK_BUILD_DEFAULT_MODULES`. Then you will see the modules and groups that you can enable or disable based on your needs.
Francois
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### Author:  [@dzenanz](https://discourse.itk.org/u/dzenanz)
#### Post date: [May 6, 2019, 2:08pm UTC](https://discourse.itk.org/t/how-to-disable-particular-default-module/1840/3 "2019-05-06T14:08:33Z")
You can also enable `ITK_USE_SYSTEM_GDCM` and other `ITK_USE_SYSTEM_`\* options and provide path to your versions of those libraries.
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### Author:  [@mihail.isakov](https://discourse.itk.org/u/mihail.isakov)
#### Post date: [May 8, 2019, 11:01am UTC](https://discourse.itk.org/t/how-to-disable-particular-default-module/1840/4 "2019-05-08T11:01:52Z")
Thanks, i used ITK\_USE\_SYSTEM\_GDCM earlier, don’t want, i use another DICOM IO. I am surprised how difficult is to get rid of it. In the past, in earlier v4 versions it was possible, i remember, there were options, now there is no option, even if “default modules off” is set, now **it is not a module** , it is hard-coded as dependency, mostly for testing stuff. Could remove only with destructive editing.
---
### Author:  [@phcerdan](https://discourse.itk.org/u/phcerdan)
#### Post date: [May 8, 2019, 12:54pm UTC](https://discourse.itk.org/t/how-to-disable-particular-default-module/1840/5 "2019-05-08T12:54:38Z")
It is [a module](https://github.com/InsightSoftwareConsortium/ITK/blob/bcd84009f1bcad2dc5baeae5798ae267f4cff644/Modules/IO/GDCM/itk-module.cmake). Have you tried setting the CMake options (in the terminal):
`-DModule_ITKGDCM:BOOL=OFF`
`-DModule_ITKIOGDCM:BOOL=OFF`
or maybe you just want to get rid off the IO with the second option.
If you have your own clone/version of GDCM, you can point to that one with the `ITK_USE_SYSTEM_GDCM` and then disable the IO module if not interested.
Hope it helps
---
### Author:  [@mihail.isakov](https://discourse.itk.org/u/mihail.isakov)
#### Post date: [May 8, 2019, 1:21pm UTC](https://discourse.itk.org/t/how-to-disable-particular-default-module/1840/6 "2019-05-08T13:21:53Z")
-DModule\_ITKGDCM:BOOL=OFF -DModule\_ITKGDCMIO:BOOL=OFF
Thank you! Tried. May be it will work, not sure, shall look closer, currently GDCM was build with all dependencies i don’t want: openjpeg, socketxx, charls, jpeg
\<…\>
– Configuring done
– Generating done
CMake Warning:
Manually-specified variables were not used by the project:
```
Module_ITKGDCMIO
```
– Build files have been written to: /home/r/itk/bITK
r@deb:~/itk/bITK$ make
\<…\>
[41%] Built target gdcmsocketxx
[42%] Built target gdcmCommon
[44%] Built target gdcmDSED
[45%] Built target gdcmIOD
[46%] Built target gdcmDICT
[47%] Built target itkgdcmopenjp2
[47%] Built target gdcmcharls
[47%] Built target gdcmuuid
[50%] Built target gdcmjpeg8
[53%] Built target gdcmjpeg12
[56%] Built target gdcmjpeg16
[61%] Built target gdcmMSFF
[64%] Built target gdcmMEXD
\<…\>
[81%] Built target ITKIOGDCM
[81%] Built target ITKIOGDCM-all
---
### Author:  [@dzenanz](https://discourse.itk.org/u/dzenanz)
#### Post date: [May 8, 2019, 1:24pm UTC](https://discourse.itk.org/t/how-to-disable-particular-default-module/1840/7 "2019-05-08T13:24:29Z")
GDCM might be requested by one of its dependencies. When configuring ITK, there is a list of all enabled modules along with the explanation what module/option requires it. For example `Enabled ITKGDCM, requested by ITK_BUILD_DEFAULT_MODULES.` Look for what is requesting GDCM for you.
---
### Author:  [@phcerdan](https://discourse.itk.org/u/phcerdan)
#### Post date: [May 8, 2019, 1:35pm UTC](https://discourse.itk.org/t/how-to-disable-particular-default-module/1840/8 "2019-05-08T13:35:44Z")
Oh, the IO module name is the other way around, sorry! Try:
`-DModule_ITKIOGDCM:BOOL=OFF`
(correcting the top post too)