# How to include vtk dll in my self projection?
**URL:** https://discourse.vtk.org/t/how-to-include-vtk-dll-in-my-self-projection/6985
**Category:** Support
**Created:** [October 27, 2021, 9:39am UTC](https://discourse.vtk.org/t/how-to-include-vtk-dll-in-my-self-projection/6985 "2021-10-27T09:39:57Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@zhang-qiang-github](https://discourse.vtk.org/u/zhang-qiang-github)
#### Post date: [October 27, 2021, 9:39am UTC](https://discourse.vtk.org/t/how-to-include-vtk-dll-in-my-self-projection/6985/1 "2021-10-27T09:39:58Z")
I want to use vtk in my team projection. I firstly install vtk, and collect the necessary dll, and the fold is:
```auto
Thirdparty
VTK
bin
Debug
xxx.dll
...
Release
xxx.dll
...
include
xxx
...
lib
Debug
xxx
...
Release
...
```
In my CMakeLists.txt:
```auto
set(VTI_DIR "xxx/Thirdparty/VTK")
include_directories(
${VTK_DIR}/include
)
target_link_libraries(Pro
vtkCommonCore-9.0
....
)
```
For VTK 8, the CMakeLists.txt is OK, but it cause bug for vtk 9.0.
The `target_link_libraries(Pro vtkCommonCore-9.0 ....)` is OK for release, but it is wrong for debug. Because, the dll is `vtkCommonCore-9.0d` for debug. The dll of debug has a more `d` than that of release.
If I use `target_link_libraries(Pro vtkCommonCore-9.0d ....)` , the code would be ok for debug but wrong for release.
Can I remove the `d` in the dll of debug?
How can I fix this problem? Any suggestion is appreciated~~~
---
### Author:  [@codeling](https://discourse.vtk.org/u/codeling)
#### Post date: [October 28, 2021, 8:24am UTC](https://discourse.vtk.org/t/how-to-include-vtk-dll-in-my-self-projection/6985/2 "2021-10-28T08:24:51Z")
As far as I know, the way to do this “properly” is to not use “vtkCommonCore-9.0” as library name in CMake directly, instead, use:
```auto
find_package(VTK)
if (VTK_VERSION VERSION_LESS "8.90.0")
include(${VTK_USE_FILE})
target_link_libraries(Pro ${VTK_LIBRARIES})
else()
target_link_libraries(Pro ${VTK_LIBRARIES})
vtk_module_autoinit(
TARGETS Pro
MODULES ${VTK_LIBRARIES}
)
endif()
```
For more info I would recommend checking the VTK examples, especially the [Tutorial](https://kitware.github.io/vtk-examples/site/Cxx/Tutorial/Tutorial_Step1/)
---
### Author:  [@zhang-qiang-github](https://discourse.vtk.org/u/zhang-qiang-github)
#### Post date: [October 28, 2021, 8:47am UTC](https://discourse.vtk.org/t/how-to-include-vtk-dll-in-my-self-projection/6985/3 "2021-10-28T08:47:02Z")
`find_package(VTK)` is very convenient if I have compiled VTK from source code in my computer.
However, if I don’t want to compile VTK in my computer, I only want to use VTK by dll/lib/include. How can I do?
I have find one solution after reading the explanation of [cmake](https://cmake.org/cmake/help/latest/command/target_link_libraries.html).
```auto
target_link_libraries(Pro
debug vtkCommonCore-9.0d
optimized vtkCommonCore-9.0
....
)
```
The keyword of `debug` and `optimized` can distinguish debug/release.
But the above solution seem to be inconvenient.
[cmake](https://cmake.org/cmake/help/latest/command/target_link_libraries.html) provides another two methods:
1. A plain library name
I use it as: `target_link_libraries(Pro -lvtkCommonCore)`, but it failed.
2. A generator expression.
I use it as `target_link_libraries(Pro vtkCommonCore-9.0$<1:d;2:"">)`, but it also failed.
---
### Author:  [@ben.boeckel](https://discourse.vtk.org/u/ben.boeckel)
#### Post date: [November 15, 2021, 9:05pm UTC](https://discourse.vtk.org/t/how-to-include-vtk-dll-in-my-self-projection/6985/4 "2021-11-15T21:05:24Z")
You should use `VTK::CommonCore`. That is a CMake target which will end up linking to the right thing for you.