# Two questions about new module system
**URL:** https://discourse.vtk.org/t/two-questions-about-new-module-system/2864
**Category:** Support
**Created:** [March 22, 2020, 9:52am UTC](https://discourse.vtk.org/t/two-questions-about-new-module-system/2864 "2020-03-22T09:52:18Z")
**Posts on this page:** 4
**Page:** 2
### Author:  [@kerim](https://discourse.vtk.org/u/kerim)
#### Post date: [April 29, 2020, 8:47pm UTC](https://discourse.vtk.org/t/two-questions-about-new-module-system/2864/21 "2020-04-29T20:47:55Z")
I’ve just rebuilt the library and with these two lines of code:
```
#define vtkRenderingCore_AUTOINIT 2(vtkRenderingOpenGL2,vtkInteractionStyle,vtkRenderingFreeType)
#define vtkRenderingContext2D_AUTOINIT 1(vtkRenderingContextOpenGL2)
```
Everything works fine
Thank you a lot 🙂
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### Author:  [@cean\_wang](https://discourse.vtk.org/u/cean_wang)
#### Post date: [November 10, 2020, 1:26am UTC](https://discourse.vtk.org/t/two-questions-about-new-module-system/2864/22 "2020-11-10T01:26:29Z")
Which file you put these two lines in? The Cmakefiles.txt or your cpp code?
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### Author:  [@kerim](https://discourse.vtk.org/u/kerim)
#### Post date: [November 10, 2020, 1:46am UTC](https://discourse.vtk.org/t/two-questions-about-new-module-system/2864/23 "2020-11-10T01:46:58Z")
Hi,
I put them in my .cpp file where my VTK code is
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### Author:  [@cean\_wang](https://discourse.vtk.org/u/cean_wang)
#### Post date: [November 10, 2020, 3:06am UTC](https://discourse.vtk.org/t/two-questions-about-new-module-system/2864/24 "2020-11-10T03:06:37Z")
> [@kerim](#):
>
> `RenderingContextOpenGL2`
Thanks.
I changed the setting of RenderingContextOpenGL2 from DEFAULT to Yes and recompiled VTK, seems working now.
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