Index: llvm/cmake/modules/AddLLVM.cmake
===================================================================
--- llvm/cmake/modules/AddLLVM.cmake
+++ llvm/cmake/modules/AddLLVM.cmake
@@ -811,6 +811,7 @@
           get_target_property(lib_type ${lib} TYPE)
           if("${lib_type}" STREQUAL "STATIC_LIBRARY")
             list(APPEND static_libs ${lib})
+            list(APPEND static_lib_files $<TARGET_LINKER_FILE:${lib}>)
           else()
             list(APPEND other_libs ${lib})
           endif()
@@ -833,7 +834,7 @@
       set(mangling itanium)
     endif()
     add_custom_command(OUTPUT ${exported_symbol_file}
-                       COMMAND ${PYTHON_EXECUTABLE} ${LLVM_MAIN_SRC_DIR}/utils/extract_symbols.py --mangling=${mangling} ${static_libs} -o ${exported_symbol_file}
+                       COMMAND ${PYTHON_EXECUTABLE} ${LLVM_MAIN_SRC_DIR}/utils/extract_symbols.py --mangling=${mangling} ${static_lib_files} -o ${exported_symbol_file}
                        WORKING_DIRECTORY ${LLVM_LIBRARY_OUTPUT_INTDIR}
                        DEPENDS ${LLVM_MAIN_SRC_DIR}/utils/extract_symbols.py ${static_libs}
                        VERBATIM
Index: llvm/utils/extract_symbols.py
===================================================================
--- llvm/utils/extract_symbols.py
+++ llvm/utils/extract_symbols.py
@@ -393,19 +393,7 @@
     # Get the list of libraries to extract symbols from
     libs = list()
     for lib in args.libs:
-        # When invoked by cmake the arguments are the cmake target names of the
-        # libraries, so we need to add .lib/.a to the end and maybe lib to the
-        # start to get the filename. Also allow objects.
-        suffixes = ['.lib','.a','.obj','.o']
-        if not any([lib.endswith(s) for s in suffixes]):
-            for s in suffixes:
-                if os.path.exists(lib+s):
-                    lib = lib+s
-                    break
-                if os.path.exists('lib'+lib+s):
-                    lib = 'lib'+lib+s
-                    break
-        if not any([lib.endswith(s) for s in suffixes]):
+        if not os.path.exists(lib):
             print("Don't know what to do with argument "+lib, file=sys.stderr)
             exit(1)
         libs.append(lib)