# ITKv4Compatibility

**URL:** https://discourse.itk.org/t/itkv4compatibility/848
**Category:** Engineering
**Tags:** cmake
**Created:** [April 19, 2018, 12:48am UTC](https://discourse.itk.org/t/itkv4compatibility/848 "2018-04-19T00:48:33Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![zhuangming.shen](https://discourse.itk.org/letter_avatar_proxy/v4/letter/z/4af34b/32.png) [@zhuangming.shen](https://discourse.itk.org/u/zhuangming.shen)
#### Post date: [April 19, 2018, 12:48am UTC](https://discourse.itk.org/t/itkv4compatibility/848/1 "2018-04-19T00:48:33Z")

</div>

Hi all,  
When I configured ITK v5.0 using CMake 3.9.5, I enabled ITKV4\_COMPATIBILITY, but an error happened. Could anyone tell me what’s the problem? Thanks.

![image](https://discourse.itk.org/uploads/default/original/1X/54a54b4a9ac25ce936c54483ec0c1595e28d7611.png)

Regards,

Zhuangming Shen

---

<div class="post-metadata">

### Author: ![matt.mccormick](https://discourse.itk.org/user_avatar/discourse.itk.org/matt.mccormick/32/7_2.png) [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)
#### Post date: [April 19, 2018, 1:55pm UTC](https://discourse.itk.org/t/itkv4compatibility/848/2 "2018-04-19T13:55:23Z")

</div>

Hi Zhuangming,

Thanks for reporting the issue. It will be fixed by this patch:

[http://review.source.kitware.com/#/c/23344/](http://review.source.kitware.com/#/c/23344/)

Matt