From 7391363302d36da3ed8c421210c15dbaa69ad896 Mon Sep 17 00:00:00 2001
From: Ben Boeckel <ben.boeckel@kitware.com>
Date: Thu, 29 Jul 2021 20:45:01 -0400
Subject: VTKCompatibility: ignore for "modern" VTK

Modern versions which use the module system really don't need any of the
hacks needed here.
---
 Modules/VTKCompatibility.cmake | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Modules/VTKCompatibility.cmake b/Modules/VTKCompatibility.cmake
index 1b0815e..4ee7643 100644
--- a/Modules/VTKCompatibility.cmake
+++ b/Modules/VTKCompatibility.cmake
@@ -1,6 +1,10 @@
 # Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
 # file Copyright.txt or https://cmake.org/licensing for details.
 
+# Not needed for "modern" VTK.
+if (EXISTS "${VTK_SOURCE_DIR}/CMake/vtkModule.cmake")
+  return ()
+endif ()
 
 if(APPLE)
   set(CMAKE_CXX_CREATE_SHARED_LIBRARY "${CMAKE_C_CREATE_SHARED_LIBRARY}")
-- 
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