Index: cmake/modules/AddLLVM.cmake
===================================================================
--- cmake/modules/AddLLVM.cmake
+++ cmake/modules/AddLLVM.cmake
@@ -88,11 +88,14 @@
     set(CAT "type")
     if(CYGWIN)
       set(CAT "cat")
+    else()
+      # Convert ${export_file} to native format (backslashes) for "type"
+      # Does not use file(TO_NATIVE_PATH) as it doesn't create a native
+      # path but a build-system specific format (see CMake bug
+      # http://public.kitware.com/Bug/print_bug_page.php?bug_id=5939 )
+      string(REPLACE / \\ export_file_backslashes ${export_file})
     endif()
 
-    # Using ${export_file} in add_custom_command directly confuses cmd.exe.
-    file(TO_NATIVE_PATH ${export_file} export_file_backslashes)
-
     add_custom_command(OUTPUT ${native_export_file}
       COMMAND ${CMAKE_COMMAND} -E echo "EXPORTS" > ${native_export_file}
       COMMAND ${CAT} ${export_file_backslashes} >> ${native_export_file}