common.opt (flag_stack_check): New Variable entry.

	* common.opt (flag_stack_check): New Variable entry.
	(fcompare-debug-second): Use Var.
	* flags.h (flag_compare_debug, flag_stack_check): Remove.
	* opts.c (flag_compare_debug): Remove.
	(common_handle_option): Don't handle OPT_fcompare_debug_second.
	Set opts->x_flag_stack_check for OPT_fstack_check_.
	* toplev.c (flag_stack_check): Remove.

ada:
	* gcc-interface/misc.c (flag_compare_debug, flag_stack_check):
	Undefine as macros then define as variables.
	(gnat_post_options): Set variables from global_options.

From-SVN: r167331

gcc/ChangeLog

 2010-12-01  Joseph Myers  <joseph@codesourcery.com>
 
+	* common.opt (flag_stack_check): New Variable entry.
+	(fcompare-debug-second): Use Var.
+	* flags.h (flag_compare_debug, flag_stack_check): Remove.
+	* opts.c (flag_compare_debug): Remove.
+	(common_handle_option): Don't handle OPT_fcompare_debug_second.
+	Set opts->x_flag_stack_check for OPT_fstack_check_.
+	* toplev.c (flag_stack_check): Remove.
+
+2010-12-01  Joseph Myers  <joseph@codesourcery.com>
+
 	* common.opt (main_input_filename, main_input_basename,
 	main_input_baselength): New Variable entries.  From toplev.c.
 	* final.c (output_quoted_string): Move from toplev.c.

gcc/ada/ChangeLog

+2010-12-01  Joseph Myers  <joseph@codesourcery.com>
+
+	* gcc-interface/misc.c (flag_compare_debug, flag_stack_check):
+	Undefine as macros then define as variables.
+	(gnat_post_options): Set variables from global_options.
+
 2010-11-27  Eric Botcazou  <ebotcazou@adacore.com>
 
 	PR ada/46574

gcc/ada/gcc-interface/misc.c

@@ -221,8 +221,12 @@ gnat_init_options (unsigned int decoded_options_count,
    of the global_options structure.  */
 #undef optimize
 #undef optimize_size
+#undef flag_compare_debug
+#undef flag_stack_check
 int optimize;
 int optimize_size;
+int flag_compare_debug;
+enum stack_check_type flag_stack_check = NO_STACK_CHECK;
 
 /* Post-switch processing.  */
 
@@ -252,6 +256,8 @@ gnat_post_options (const char **pfilename ATTRIBUTE_UNUSED)
 
   optimize = global_options.x_optimize;
   optimize_size = global_options.x_optimize_size;
+  flag_compare_debug = global_options.x_flag_compare_debug;
+  flag_stack_check = global_options.x_flag_stack_check;
 
   return false;
 }

gcc/common.opt

@@ -129,6 +129,10 @@ unsigned int initial_max_fld_align = TARGET_DEFAULT_PACK_STRUCT
 Variable
 enum vect_verbosity_levels user_vect_verbosity_level = MAX_VERBOSITY_LEVEL
 
+; Type of stack check.
+Variable
+enum stack_check_type flag_stack_check = NO_STACK_CHECK
+
 ; -dA causes debug commentary information to be produced in
 ; the generated assembly code (to make it more readable).  This option
 ; is generally only of use to those who actually need to read the
@@ -831,7 +835,7 @@ Common Driver JoinedOrMissing RejectNegative Var(flag_compare_debug_opt)
 -fcompare-debug[=<opts>]	Compile with and without e.g. -gtoggle, and compare the final-insns dump
 
 fcompare-debug-second
-Common Driver RejectNegative
+Common Driver RejectNegative Var(flag_compare_debug)
 Run only the second compilation of -fcompare-debug
 
 fconserve-stack

gcc/flags.h

@@ -34,11 +34,6 @@ extern const char *const debug_type_names[];
 extern void strip_off_ending (char *, int);
 extern int base_of_path (const char *path, const char **base_out);
 
-/* Run the second compilation of -fcompare-debug.  Not defined using
-   Var in common.opt because this is used in Ada code and so must be
-   an actual variable not a macro.  */
-extern int flag_compare_debug;
-
 /* True if this is the LTO front end (lto1).  This is used to disable
    gimple generation and lowering passes that are normally run on the
    output of a front end.  These passes must be bypassed for lto since
@@ -120,8 +115,6 @@ extern struct target_flag_state *this_target_flag_state;
 /* Nonzero if we dump in VCG format, not plain text.  */
 extern int dump_for_graph;
 
-extern enum stack_check_type flag_stack_check;
-
 /* Returns TRUE if generated code should match ABI version N or
    greater is in use.  */
 

gcc/opts.c

@@ -35,11 +35,6 @@ along with GCC; see the file COPYING3.  If not see
 #include "insn-attr.h"		/* For INSN_SCHEDULING and DELAY_SLOTS.  */
 #include "target.h"
 
-/* Run the second compilation of -fcompare-debug.  Not defined using
-   Var in common.opt because this is used in Ada code and so must be
-   an actual variable not a macro.  */
-int flag_compare_debug;
-
 /* Parse the -femit-struct-debug-detailed option value
    and set the flag variables. */
 
@@ -1447,10 +1442,6 @@ common_handle_option (struct gcc_options *opts,
       /* Deferred.  */
       break;
 
-    case OPT_fcompare_debug_second:
-      flag_compare_debug = value;
-      break;
-
     case OPT_fdbg_cnt_:
     case OPT_fdbg_cnt_list:
       /* Deferred.  */
@@ -1602,15 +1593,15 @@ common_handle_option (struct gcc_options *opts,
 
     case OPT_fstack_check_:
       if (!strcmp (arg, "no"))
-	flag_stack_check = NO_STACK_CHECK;
+	opts->x_flag_stack_check = NO_STACK_CHECK;
       else if (!strcmp (arg, "generic"))
 	/* This is the old stack checking method.  */
-	flag_stack_check = STACK_CHECK_BUILTIN
+	opts->x_flag_stack_check = STACK_CHECK_BUILTIN
 			   ? FULL_BUILTIN_STACK_CHECK
 			   : GENERIC_STACK_CHECK;
       else if (!strcmp (arg, "specific"))
 	/* This is the new stack checking method.  */
-	flag_stack_check = STACK_CHECK_BUILTIN
+	opts->x_flag_stack_check = STACK_CHECK_BUILTIN
 			   ? FULL_BUILTIN_STACK_CHECK
 			   : STACK_CHECK_STATIC_BUILTIN
 			     ? STATIC_BUILTIN_STACK_CHECK

gcc/toplev.c

@@ -170,9 +170,6 @@ int flag_permissive = 0;
    the support provided depends on the backend.  */
 rtx stack_limit_rtx;
 
-/* Type of stack check.  */
-enum stack_check_type flag_stack_check = NO_STACK_CHECK;
-
 /* True if the user has tagged the function with the 'section'
    attribute.  */