Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/opensubdiv-source/cmake/FindCLEW.cmake

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+#
+#   Copyright 2013 Pixar
+#
+#   Licensed under the terms set forth in the LICENSE.txt file available at
+#   https://opensubdiv.org/license.
+#
+
+# Try to find CLEW library and include path.
+# Once done this will define
+#
+# CLEW_FOUND
+# CLEW_INCLUDE_DIR
+# CLEW_LIBRARY
+#
+
+include (FindPackageHandleStandardArgs)
+
+if(WIN32)
+  set(_clew_SEARCH_DIRS
+    "${CLEW_LOCATION}/include"
+    "$ENV{CLEW_LOCATION}/include"
+    "$ENV{PROGRAMFILES}/CLEW/include"
+    "${PROJECT_SOURCE_DIR}/extern/clew/include"
+  )
+else()
+  set(_clew_SEARCH_DIRS
+      "${CLEW_LOCATION}"
+      "$ENV{CLEW_LOCATION}"
+      /usr
+      /usr/local
+      /sw
+      /opt/local
+      /opt/lib/clew
+  )
+endif()
+
+find_path(CLEW_INCLUDE_DIR
+  NAMES
+    clew.h
+  HINTS
+    ${_clew_SEARCH_DIRS}
+  PATH_SUFFIXES
+    include
+  NO_DEFAULT_PATH
+  DOC "The directory where clew.h resides")
+
+find_library(CLEW_LIBRARY
+  NAMES
+    CLEW clew
+  PATHS
+    ${_clew_SEARCH_DIRS}
+  PATH_SUFFIXES
+    lib lib64
+  NO_DEFAULT_PATH
+  DOC "The CLEW library")
+
+find_package_handle_standard_args(CLEW
+    REQUIRED_VARS
+        CLEW_INCLUDE_DIR
+        CLEW_LIBRARY
+)