extern FILE        *fpout_inc;
  extern FILE        *fpout_main;
  extern FILE        *fpout_blk_data;
  extern FILE        *fpout;
  extern FILE        *fpin;
  extern FILE        *fperr;

  extern char        *DBG_flags;
  extern char        *OPT_flags;
  extern char        *Cflags;
  extern char        *Fflags;
  extern char        *BOUNDS_flags;
  extern char        *PROF_flags;
  extern char        *Compile_Flags;
  extern char        *shlibdir;
  extern char        *S3_Dir;
  extern char        *progname;
  extern char        *pdtfilename;
  extern char        *pctfilename;
  extern char        *emtfilename;
  extern char        *logfile;
  extern char        *pctname;

  extern Pnode       *current_pnode;
  extern Pnode       *main_pnode;

  extern int          Compile_Method;
  extern int          Link_Method;
  extern int          Static_Link;

  extern int          Global_Control_File;
  extern int          Check_Modules;
  extern int          CaseSensitive;
  extern int          MAIN_PCT;
  extern int          which_pct_exec;
  extern int          debug;
  extern int          verbose;
  extern int          bounds;
  extern int          xfree_count;
  extern int          xcalloc_count;
  extern int          xmalloc_count;
  extern int          xrealloc_count;
  
  extern ST_entry   **EO_list;
  extern ST_entry    *main_pct;
  extern ST_entry   **pct_node_list;
  extern PDT_struct  *pdt_info;  
  extern PCT_struct  *pct_info;
  extern EMT_struct  *emt_info;
  extern File_list   *PCT_files;

  extern void      *vptr;