vcpkg/ports/vtk/vtkm.patch

diff --git a/Accelerators/Vtkm/Core/CMakeLists.txt b/Accelerators/Vtkm/Core/CMakeLists.txt
index b889a771f..317d83f75 100644
--- a/Accelerators/Vtkm/Core/CMakeLists.txt
+++ b/Accelerators/Vtkm/Core/CMakeLists.txt
@@ -14,8 +14,9 @@
 ##
 ##=============================================================================
 
-list(INSERT 0 CMAKE_MODULE_PATH
-  "${VTK_SOURCE_DIR}/ThirdParty/vtkm/vtkvtkm/vtk-m/CMake")
+find_package(VTKm CONFIG REQUIRED)
+#list(INSERT 0 CMAKE_MODULE_PATH
+#  "${VTK_SOURCE_DIR}/ThirdParty/vtkm/vtkvtkm/vtk-m/CMake")
 
 set(private_headers
   vtkmlib/DataArrayConverters.hxx
@@ -77,9 +78,9 @@ vtkm_add_target_information(${vtkm_accel_target}
                             MODIFY_CUDA_FLAGS
                             DEVICE_SOURCES ${sources})
 
-vtk_module_set_property(VTK::AcceleratorsVTKmCore
-  PROPERTY  JOB_POOL_COMPILE
-  VALUE     vtkm_pool)
+#vtk_module_set_property(VTK::AcceleratorsVTKmCore
+#  PROPERTY  JOB_POOL_COMPILE
+#  VALUE     vtkm_pool)
 
 if (TARGET vtkm::cuda)
   vtk_module_set_property(VTK::AcceleratorsVTKmCore
diff --git a/Accelerators/Vtkm/DataModel/CMakeLists.txt b/Accelerators/Vtkm/DataModel/CMakeLists.txt
index 56307be8d..30fff98e8 100644
--- a/Accelerators/Vtkm/DataModel/CMakeLists.txt
+++ b/Accelerators/Vtkm/DataModel/CMakeLists.txt
@@ -14,8 +14,9 @@
 ##
 ##=============================================================================
 
-list(INSERT 0 CMAKE_MODULE_PATH
-  "${VTK_SOURCE_DIR}/ThirdParty/vtkm/vtkvtkm/vtk-m/CMake")
+find_package(VTKm CONFIG REQUIRED)
+#list(INSERT 0 CMAKE_MODULE_PATH
+#  "${VTK_SOURCE_DIR}/ThirdParty/vtkm/vtkvtkm/vtk-m/CMake")
 
 set(sources
   vtkmlib/ArrayConvertersReal.cxx
@@ -85,9 +86,9 @@ vtkm_add_target_information(${vtkm_accel_target}
                             MODIFY_CUDA_FLAGS
                             DEVICE_SOURCES ${sources})
 
-vtk_module_set_property(VTK::AcceleratorsVTKmDataModel
-  PROPERTY  JOB_POOL_COMPILE
-  VALUE     vtkm_pool)
+#vtk_module_set_property(VTK::AcceleratorsVTKmDataModel
+#  PROPERTY  JOB_POOL_COMPILE
+#  VALUE     vtkm_pool)
 
 if (TARGET vtkm::cuda)
   vtk_module_set_property(VTK::AcceleratorsVTKmDataModel
diff --git a/Accelerators/Vtkm/Filters/CMakeLists.txt b/Accelerators/Vtkm/Filters/CMakeLists.txt
index 14e84f1dd..0a931285d 100644
--- a/Accelerators/Vtkm/Filters/CMakeLists.txt
+++ b/Accelerators/Vtkm/Filters/CMakeLists.txt
@@ -14,8 +14,9 @@
 ##
 ##=============================================================================
 
-list(INSERT 0 CMAKE_MODULE_PATH
-  "${VTK_SOURCE_DIR}/ThirdParty/vtkm/vtkvtkm/vtk-m/CMake")
+find_package(VTKm CONFIG REQUIRED)
+#list(INSERT 0 CMAKE_MODULE_PATH
+#  "${VTK_SOURCE_DIR}/ThirdParty/vtkm/vtkvtkm/vtk-m/CMake")
 
 set(impl_classes
   vtkmAverageToCells
@@ -80,9 +81,9 @@ vtkm_add_target_information(${vtkm_accel_target}
                             MODIFY_CUDA_FLAGS
                             DEVICE_SOURCES ${sources})
 
-vtk_module_set_property(VTK::AcceleratorsVTKmFilters
-  PROPERTY  JOB_POOL_COMPILE
-  VALUE     vtkm_pool)
+#vtk_module_set_property(VTK::AcceleratorsVTKmFilters
+#  PROPERTY  JOB_POOL_COMPILE
+#  VALUE     vtkm_pool)
 vtk_module_link(VTK::AcceleratorsVTKmFilters
   PRIVATE
     vtkm_worklet
diff --git a/CMake/vtk-config.cmake.in b/CMake/vtk-config.cmake.in
index 5a5e8b8df..96413875f 100644
--- a/CMake/vtk-config.cmake.in
+++ b/CMake/vtk-config.cmake.in
@@ -121,9 +121,7 @@ set("${CMAKE_FIND_PACKAGE_NAME}_AVAILABLE_COMPONENTS" "@vtk_all_components@")
 unset("${CMAKE_FIND_PACKAGE_NAME}_FOUND")
 set("${CMAKE_FIND_PACKAGE_NAME}_HAS_VTKm" "@vtk_has_vtkm@")
 if (${CMAKE_FIND_PACKAGE_NAME}_HAS_VTKm)
-  find_package(VTKm
-    PATHS "${CMAKE_CURRENT_LIST_DIR}/vtkm"
-    NO_DEFAULT_PATH)
+  find_package(VTKm CONFIG REQUIRED)
   if (NOT VTKm_FOUND)
     set("${CMAKE_FIND_PACKAGE_NAME}_FOUND" 0)
   endif ()
diff --git a/ThirdParty/vtkm/CMakeLists.txt b/ThirdParty/vtkm/CMakeLists.txt
index 5817d42f8..f21d17da8 100644
--- a/ThirdParty/vtkm/CMakeLists.txt
+++ b/ThirdParty/vtkm/CMakeLists.txt
@@ -1,6 +1,41 @@
-vtk_module_third_party_internal(
-  LICENSE_FILES "vtkvtkm/vtk-m/LICENSE.txt"
-  VERSION       "master"
-  SUBDIRECTORY  vtkvtkm
-  STANDARD_INCLUDE_DIRS
-  INTERFACE)
+#vtk_module_third_party_internal(
+#  LICENSE_FILES "vtkvtkm/vtk-m/LICENSE.txt"
+#  VERSION       "master"
+#  SUBDIRECTORY  vtkvtkm
+#  STANDARD_INCLUDE_DIRS
+#  INTERFACE)
+
+message(STATUS "VTK_MODULE_USE_EXTERNAL_VTK_vtkm: ${VTK_MODULE_USE_EXTERNAL_VTK_vtkm}")
+if(TRUE)
+    message(STATUS "Searching for external VTKm")
+    find_package(VTKm CONFIG REQUIRED)
+    if(TARGET vtkm_compiler_flags)
+        get_target_property(VTKm_INCLUDE_DIRS vtkm_compiler_flags INTERFACE_INCLUDE_DIRECTORIES)
+        message(STATUS "INCLUDE: ${VTKm_INCLUDE_DIRS}")
+        get_target_property(VTKm_DIY_INCLUDE_DIRS vtkm_diy INTERFACE_INCLUDE_DIRECTORIES)
+        get_target_property(VTKm_OPTION_INCLUDE_DIRS vtkm_optionparser INTERFACE_INCLUDE_DIRECTORIES)
+        if(MSVC)
+            set(VTKm_DEFINITIONS /bigobj)
+        endif()
+    else()
+        message(FATAL_ERROR "VTKM target missing")
+    endif()
+    if(VTKM_FOUND)
+        message(STATUS "Found VTKm")
+    endif()
+endif()
+
+vtk_module_third_party(
+  INTERNAL
+    HEADER_ONLY
+    LICENSE_FILES "vtkvtkm/vtk-m/LICENSE.txt"
+    VERSION       "master"
+    SUBDIRECTORY  vtkvtkm
+    STANDARD_INCLUDE_DIRS
+    INTERFACE
+  EXTERNAL
+    PACKAGE VTKm
+    TARGETS vtkm_cont vtkm_filter vtkm_diy vtkm_optionparser vtkm_taotuple
+    #LIBRARIES vtkm_cont vtkm_filter vtkm_diy vtkm_optionparser vtkm_taotuple
+    INCLUDE_DIRS VTKm_INCLUDE_DIRS VTKm_DIY_INCLUDE_DIRS VTKm_OPTION_INCLUDE_DIRS
+)
\ No newline at end of file
diff --git a/ThirdParty/vtkm/vtk.module b/ThirdParty/vtkm/vtk.module
index a8e4dad0f..c7bbbf0e8 100644
--- a/ThirdParty/vtkm/vtk.module
+++ b/ThirdParty/vtkm/vtk.module
@@ -3,5 +3,7 @@ NAME
 PRIVATE_DEPENDS
   # While not needed to satisfy symbols, this is necessary to guarantee that
   # VTK_SMP_IMPLEMENTATION_TYPE is available when configuring vtk-m.
-  VTK::CommonCore
+  # VTK::CommonCore
+LIBRARY_NAME
+  VTKm
 THIRD_PARTY