Add FIXME about undefined symbols when dynamically linking Emscripten shared library to the unittests main_module

Author: mcbarton

lib/Interpreter/CMakeLists.txt

@@ -115,7 +115,10 @@ endif()
   )
 
 if(EMSCRIPTEN)
-  # Read the undefined symbols from the text file
+  # FIXME: When dynamically linking the Emscripten shared library to the 
+  # unit tests main_module you get errors due to undefined symbols. The reading of the file
+  # below into a SYMBOLS_LIST variable is a temporary workaround that exports the undefined
+  #  symbols from the shared library, until it can be determined why they are not being exported already.
   file(READ "${CMAKE_SOURCE_DIR}/lib/Interpreter/exports.ld" SYMBOLS_LIST)
 
   # Replace newlines with spaces