heuristics regarding optimization. */
#define DECL_ESTIMATED_INSNS(NODE) \
(FUNCTION_DECL_CHECK (NODE)->decl.u1.i)
-
-/* Nonzero if we can read a PCH file now. */
-
-extern int allow_pch;
\f
/* Switches common to the C front ends. */
extern int flag_use_cxa_atexit;
-/* Nonzero means output .vtable_{entry,inherit} for use in doing vtable gc. */
-
-extern int flag_vtable_gc;
-
/* Nonzero means make the default pedwarns warnings instead of errors.
The value of this flag is ignored if -pedantic is specified. */
extern void c_common_read_pch (cpp_reader *pfile, const char *name, int fd,
const char *orig);
extern void c_common_write_pch (void);
+extern void c_common_no_more_pch (void);
extern void builtin_define_with_value (const char *, const char *, int);
extern void c_stddef_cpp_builtins (void);
extern void fe_file_change (const struct line_map *);