Control Flow in Build System

• Generate a build description table from the sets of configurations selected.
• Dependency resolution
  • Load any explicit dependency search files given.
  • Iterate over dependency list for each project (caching results eventually) for each,
    • Check explicit dependency scripts for entries.
    • Use found script or system default search.
    • Check library can be found.
    • Get CFlags and Libs if yes, otherwise report error. ( probably best to run through all the dependencies here so we get a full list of unresolved dependencies rather than just the first one to fail.
• Call selected generator with the updated description table.
• Success?