text: #define STRINGIFY2(arg) #arg
  #define STRINGIFY(arg) STRINGIFY2(arg)
  
  extern const char *buildstring;
  const char *buildstring = __TIME__ " " __DATE__
  #ifdef SVNREVISION
  " " STRINGIFY(SVNREVISION)
  #endif
  #ifdef BUILDTYPE
  " " STRINGIFY(BUILDTYPE)
  #endif
  ;
  