Hello,
I’m upgrading my solution from VTK 8.2.2 to 9.5.2 and have built VTK 9.5.0 as static libraries. After updating my code, I’m encountering linker errors:
```auto
error LNK2001: unresolved external symbol vtk_glad_*
```
If I understand correclty, `vtkglew-8.2.lib` has been replaced by `vtkglad-9.5.lib` in VTK 9.x.
My VTK 8.2.0 project did not explicitly reference `vtkglew-8.2.lib` but I added `vtkglad-9.5.lib` to my additional dependencies, and the linker errors persist.
My current linker config is:
```auto
gdi32.lib;glu32.lib;opengl32.lib;User32.lib;vtkglad-9.5.lib;vtkInteractionStyle-9.5.lib;vtkCommonCore-9.5.lib;vtkCommonDataModel-9.5.lib;vtkCommonExecutionModel-9.5.lib;vtkCommonMath-9.5.lib;vtkCommonSystem-9.5.lib;vtkCommonMisc-9.5.lib;vtkCommonTransforms-9.5.lib;vtkFiltersCore-9.5.lib;vtkFiltersGeneral-9.5.lib;vtkFiltersGeneric-9.5.lib;vtkFiltersGeometry-9.5.lib;vtkFiltersImaging-9.5.lib;vtkFiltersModeling-9.5.lib;vtkFiltersParallel-9.5.lib;vtkFiltersSources-9.5.lib;vtkFiltersExtraction-9.5.lib;vtkFiltersTexture-9.5.lib;vtkImagingCore-9.5.lib;vtkInteractionImage-9.5.lib;vtkInteractionStyle-9.5.lib;vtkInteractionWidgets-9.5.lib;vtkIOCore-9.5.lib;vtkIOImage-9.5.lib;vtkIOXML-9.5.lib;vtkRenderingAnnotation-9.5.lib;vtkRenderingCore-9.5.lib;vtkRenderingFreeType-9.5.lib;vtkRenderingImage-9.5.lib;vtkRenderingLabel-9.5.lib;vtkRenderingOpenGL2-9.5.lib;vtkRenderingLOD-9.5.lib;vtkRenderingVolume-9.5.lib;vtksys-9.5.lib;log4cxx.lib
```
Am I missing any additional libraries or dependencies for VTK 9.5.0 static builds? Is there a specific linking order required for `vtkglad-9.5.lib`? Are there any other migration steps specific to the GLEW→GLAD transition?
I can provide the full build output if needed. Thank you for your help!
---
IIUC, you do not use `find_package(VTK)` from CMake to link your project against VTK?
> My current linker config is: …
That should’ve worked. I’ve not tried static builds. For dynamic libs, glad needs `GLAD_API_CALL_EXPORT` when building and linking to it, and `GLAD_API_CALL_EXPORT_BUILD` when building it.
Maybe something is preventing the vtk\_glad\_\* symbols from being visible? I will try static locally.
---
> [@jaswantp](#):
>
> IIUC, you do not use `find_package(VTK)` from CMake to link your project against VTK?
That’s correct — my project doesn’t use CMake. It’s a C++ project integrated into a larger C# solution, so I’m using Visual Studio and MSBuild for the build process. I’m manually specifying the VTK library dependencies in the `.vcxproj` file rather than using CMake’s `find_package(VTK)`.
Thank you
---
I built vtk static libs and got a test CMake project to link with it successfully. Let me run that through the Visual Studio generator and see what it creates.
---
Okay. Here is the `` section CMake generated for the VTK tests.
Note the order. opengl32.lib appears after vtkglad-9.5.lib. I do not know if this matters.
```xml
..\..\..\..\lib\MinSizeRel\vtkRenderingCore-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkCommonSystem-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersExtraction-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersGeneral-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersGeometry-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersProgrammable-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersSources-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersTexture-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkImagingSources-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkInteractionStyle-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkIOImage-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkIOLegacy-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkIOParallel-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkIOXML-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkRenderingAnnotation-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkRenderingOpenGL2-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkRenderingVRModels-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkTestingCore-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkTestingRendering-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkIOGeometry-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkjsoncpp-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersParallel-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersExtraction-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersStatistics-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkParallelDIY-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersTexture-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersModeling-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkRenderingOpenGL2-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkRenderingFreeType-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkfreetype-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkRenderingHyperTreeGrid-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersHybrid-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkImagingSources-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkRenderingUI-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkglad-9.5.lib;opengl32.lib;..\..\..\..\lib\MinSizeRel\vtkx11-9.5.lib;d3d11.lib;dxgi.lib;..\..\..\..\lib\MinSizeRel\vtkRenderingCore-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersSources-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkCommonColor-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkIOImage-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkDICOMParser-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkmetaio-9.5.lib;comctl32.lib;wsock32.lib;..\..\..\..\lib\MinSizeRel\vtkpng-9.5.lib;..\..\..\..\lib\MinSizeRel\vtktiff-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkjpeg-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkIOXML-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkIOXMLParser-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkexpat-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkTestingCore-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersHyperTree-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersGeneral-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkCommonComputationalGeometry-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersVerdict-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersGeometry-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkverdict-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkParallelCore-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkIOLegacy-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkIOCellGrid-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkIOCore-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkzlib-9.5.lib;..\..\..\..\lib\MinSizeRel\vtklz4-9.5.lib;..\..\..\..\lib\MinSizeRel\vtklzma-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersCellGrid-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersCore-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkFiltersReduction-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkImagingColor-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkImagingCore-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkCommonExecutionModel-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkCommonDataModel-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkCommonSystem-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkpugixml-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkCommonMisc-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkCommonTransforms-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkCommonMath-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkCommonCore-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkfmt-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkscn-9.5.lib;..\..\..\..\lib\MinSizeRel\vtktoken-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkloguru-9.5.lib;..\..\..\..\lib\MinSizeRel\vtkkissfft-9.5.lib;..\..\..\..\lib\MinSizeRel\vtksys-9.5.lib;ws2_32.lib;dbghelp.lib;psapi.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;comdlg32.lib;advapi32.lib%(AdditionalLibraryDirectories)%(AdditionalOptions) /machine:x64false%(IgnoreSpecificDefaultLibraries)D:/dev/vtk-static/vtk/out/build/Debug/lib/MinSizeRel/vtkRenderingCoreCxxTests.libD:/dev/vtk-static/vtk/out/build/Debug/bin/MinSizeRel/vtkRenderingCoreCxxTests.pdbConsole
```
---
> [@jaswantp](#):
>
> Note the order. opengl32.lib appears after vtkglad-9.5.lib. I do not know if this matters.
You are right, the order matters. I have re-order the libraries:
```auto
vtkInteractionStyle-9.5.lib;
vtkInteractionWidgets-9.5.lib;
vtkInteractionImage-9.5.lib;
vtkRenderingAnnotation-9.5.lib;
vtkRenderingVolume-9.5.lib;
vtkRenderingLOD-9.5.lib;
vtkRenderingLabel-9.5.lib;
vtkRenderingImage-9.5.lib;
vtkRenderingOpenGL2-9.5.lib;
vtkRenderingFreeType-9.5.lib;
vtkRenderingCore-9.5.lib;
vtkglad-9.5.lib;
vtkFiltersTexture-9.5.lib;
vtkFiltersParallel-9.5.lib;
vtkFiltersModeling-9.5.lib;
vtkFiltersImaging-9.5.lib;
vtkFiltersGeometry-9.5.lib;
vtkFiltersGeneric-9.5.lib;
vtkFiltersGeneral-9.5.lib;
vtkFiltersSources-9.5.lib;
vtkFiltersExtraction-9.5.lib;
vtkFiltersCore-9.5.lib;
vtkIOXML-9.5.lib;
vtkIOImage-9.5.lib;
vtkIOCore-9.5.lib;
vtkImagingCore-9.5.lib;
vtkCommonExecutionModel-9.5.lib;
vtkCommonDataModel-9.5.lib;
vtkCommonTransforms-9.5.lib;
vtkCommonMisc-9.5.lib;
vtkCommonMath-9.5.lib;
vtkCommonSystem-9.5.lib;
vtkCommonCore-9.5.lib;
vtksys-9.5.lib;
log4cxx.lib;
opengl32.lib;
glu32.lib;
gdi32.lib;
User32.lib;
%(AdditionalDependencies)
```
Does this order seems good to you? I still get the linker errors with this modification.
Thank you
---
No, unfortunately the linker errors persist. I’m currently working on a minimal sample application to help diagnose the issue more effectively. I’ll post an update once I have it ready.
Thank you for your help!
---
I managed to reproduce the linker errors in a sample. I am not allowed to upload attachment, how can I send it to you?
I have compiled the latest release of VTK locally and packaged it in a nuget package. I can provide you the package if needed.
---
The nuget package is quite large (130MB), I had to upload it to my Google Drive account [https://drive.google.com/file/d/1NhAxsrNyTzZlxM\_x31SHtDAPpsVB5f4J/view?usp=sharing](https://drive.google.com/file/d/1NhAxsrNyTzZlxM_x31SHtDAPpsVB5f4J/view?usp=sharing)
---
Hello,
Did you have a chance to review the sample project and/or the NuGet package?
I’ve rebuilt the latest release from scratch following the documentation ([Building - VTK documentation](https://docs.vtk.org/en/latest/build_instructions/index.html)), repackaged it, and I’m still seeing the same behavior. I’m trying to determine whether the issue comes from the sample itself or from the VTK build I produced.
Any guidance or pointers would be appreciated. Thanks!
---
Hi Charles, Yes, i downloaded your nuget package, but I have not added it to the VS solution. Apologies for the delay, i’ve been working on other things. I will try to look into it today.
---
Alright. I was able to import your nuget package into the visual studio project and reproduce the linker error that you saw.
I will now try to see what can be done to fix this. Thank you for providing the sample code and the nuget package.
---