ENH: Add "Autoscoper-CUDA" external project and build it if CUDA Tool…

…kit is found

If SlicerAutoscoperM_CUDA_PATH env. variable is set, it is used to set the
CUDA_PATH env. variable itself used by "find_package(CUDA)" to initialize
the variable CUDA_TOOLKIT_ROOT_DIR passed to the "Autoscoper-CUDA" project.

List of Autoscoper changes:

$ git shortlog d476e2cbb..644473784 --no-merges
Jean-Christophe Fillion-Robin (2):
      COMP: Update cutil headers to fix build against SDK without cufft library
      COMP: Ensure Autoscoper inner-build is built with expected CUDA toolkit

SuperBuild.cmake

@@ -21,6 +21,19 @@ set(${proj}_DEPENDS
   Autoscoper-OpenCL
   )
 
+if(DEFINED ENV{SlicerAutoscoperM_CUDA_PATH})
+  set(ENV{CUDA_PATH} $ENV{SlicerAutoscoperM_CUDA_PATH})
+endif()
+
+find_package(CUDA)
+if(CUDA_FOUND)
+  # Variable expected by find_package(CUDA) also used in Autoscoper
+  mark_as_superbuild(VARS CUDA_TOOLKIT_ROOT_DIR PROJECTS Autoscoper-CUDA)
+  list(APPEND ${proj}_DEPENDS
+    Autoscoper-CUDA
+    )
+endif()
+
 ExternalProject_Include_Dependencies(${proj}
   PROJECT_VAR proj
   SUPERBUILD_VAR ${EXTENSION_NAME}_SUPERBUILD

SuperBuild/External_Autoscoper-CUDA.cmake

@@ -0,0 +1,3 @@
+set(proj Autoscoper-CUDA)
+set(${proj}_RENDERING_BACKEND CUDA)
+include(${CMAKE_CURRENT_LIST_DIR}/External_Autoscoper.cmake)

SuperBuild/External_Autoscoper.cmake

@@ -35,7 +35,7 @@ if(NOT DEFINED ${proj}_DIR AND NOT ${SUPERBUILD_TOPLEVEL_PROJECT}_USE_SYSTEM_${p
 
   ExternalProject_SetIfNotDefined(
     Slicer_${proj}_GIT_TAG
-    "d476e2cbb4fc72a4dea5f4d467676bf9b978d8ce"
+    "644473784dd0018f5bf8518c5e5322092e4da07d"
     QUIET
   )