[CMake] generating code from compiled program

[James Bigler]

I have a program built within CMake that generates some code.  I need  
this generated code to compile some other libraries.  The problem I'm  
having is setting the dependency of the generated source file to its  
compiler.  This is what I have currently:

   # This is the helper compiler
   ADD_EXECUTABLE(ExtractSymbolsFromXML ExtractSymbolsFromXML.cc)
   TARGET_LINK_LIBRARIES(ExtractSymbolsFromXML Dataflow_Network)

   # Get the full path to the ExtractSymbolsFromXML executable
   GET_TARGET_PROPERTY(ExtractSymbolsFromXML_exe  
ExtractSymbolsFromXML ${CMAKE_BUILD_TYPE}_LOCATION)
   # Get the path to the executable, so that I can stuff the  
generated file in the same place
   GET_FILENAME_COMPONENT(binary_path ${ExtractSymbolsFromXML_exe} PATH)
   SET(Loader_cc "${binary_path}/Loader.cc")
   SET_SOURCE_FILES_PROPERTIES(
     ${Loader_cc}
     PROPERTIES GENERATED TRUE
     )
   ADD_CUSTOM_COMMAND(
     OUTPUT ${Loader_cc}
     COMMAND ${ExtractSymbolsFromXML_exe} -o ${Loader_cc}
     # This is where I get hung up.
     MAIN_DEPENDENCY ${ExtractSymbolsFromXML_exe}
     COMMENT "Generating static loader file: ${Loader_cc}"
     )

   ADD_LIBRARY(StaticHelper Loader.h ${Loader_cc})

==================================================================
I can't seem to get the dependency for ${Loader_cc} right.  Any ideas  
of what I'm doing wrong?

Thanks,
James