[CMake] Generating Source Files

[Jeremy Cowgar]

Bill Hoffman wrote:
> One more option would be to run the parser every time cmake is run.  
> If you had an option to the parser that just spit out the list of 
> files you needed to compile, and it ran relatively fast, you could do 
> this:
>
> # only run if parser.e is newer than source.cmake
> if(parser.e IS_NEWER_THAN source.cmake)
>    execute_process(COMMAND myparser  parser.e --sources sources.cmake)
> endif()

I like this solution much better, but I have simplified things for my 
example. I have been stating parser.e is the only input file. While that 
is true, parser.e is known to depend on a set of other files. So, in the 
above example I would need to check IS_NEWER_THAN a list of files I have:

SET( EU_CORE_FILES common.e emit.e error.e fwdref.e global.e inline.e 
keylist.e main.e mode.e opnames.e parser.e
  pathopen.e reswords.e scanner.e scinot.e shift.e symtab.e )

Is there a simple way of doing that?

Jeremy