# Duplicate TIFF symbols when building VTK 8.2.0 with Clang 19

**URL:** https://discourse.vtk.org/t/duplicate-tiff-symbols-when-building-vtk-8-2-0-with-clang-19/13862
**Category:** Development
**Created:** [May 9, 2024, 3:45pm UTC](https://discourse.vtk.org/t/duplicate-tiff-symbols-when-building-vtk-8-2-0-with-clang-19/13862 "2024-05-09T15:45:03Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![spenshel](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/s/b9bd4f/32.png) [@spenshel](https://discourse.vtk.org/u/spenshel)
#### Post date: [May 9, 2024, 3:45pm UTC](https://discourse.vtk.org/t/duplicate-tiff-symbols-when-building-vtk-8-2-0-with-clang-19/13862/1 "2024-05-09T15:45:03Z")

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Perhaps the version of Clang I’m using is too new (19.0.0, the latest from the LLVM repository), but when I try to build the VTK 8.2.0 code I get a variety of duplicate symbol error messages, e.g., “vtktiff\_\_TIFFerrorHandler”, “vtktiff\_\_TIFFwarningHandler” when it tries to build the TIFF library. Any suggestions?

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### Author: ![ben.boeckel](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/b/ea5d25/32.png) [@ben.boeckel](https://discourse.vtk.org/u/ben.boeckel)
#### Post date: [May 9, 2024, 7:42pm UTC](https://discourse.vtk.org/t/duplicate-tiff-symbols-when-building-vtk-8-2-0-with-clang-19/13862/2 "2024-05-09T19:42:44Z")

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Since 8.2.x is out of support, I’d:

- try using an external `libtiff`
- updating to 9.3.0.

But it showing up with Clang 19 feels odd to me…