cpphash.h (struct cpp_reader): Add print_version field.

	* cpphash.h (struct cpp_reader): Add print_version field.
	* cppinit.c (cpp_handle_option): For -v, -version, and --version,
	just set print_version and other flags as appropriate.
	(cpp_post_options): Print version here if print_version is set.

	* toplev.c (exit_after_options): New flag.
	(independent_decode_option): Don't exit here; just set
	exit_after_options.
	(main): Exit after calling lang_hooks.post_options if
	exit_after_options is true.

	* cppinit.c (append_include_chain): Drop never-used case QUOTE.
	(merge_include_chains): Adjust comment to match code.

From-SVN: r40171

gcc/ChangeLog

 2001-03-01  Zack Weinberg  <zackw@stanford.edu>
 
+	* cpphash.h (struct cpp_reader): Add print_version field.
+	* cppinit.c (cpp_handle_option): For -v, -version, and --version,
+	just set print_version and other flags as appropriate.
+	(cpp_post_options): Print version here if print_version is set.
+
+	* toplev.c (exit_after_options): New flag.
+	(independent_decode_option): Don't exit here; just set
+	exit_after_options.
+	(main): Exit after calling lang_hooks.post_options if
+	exit_after_options is true.
+
+	* cppinit.c (append_include_chain): Drop never-used case QUOTE.
+	(merge_include_chains): Adjust comment to match code.
+
+2001-03-01  Zack Weinberg  <zackw@stanford.edu>
+
 	* stringpool.c (set_identifier): New function.
 	* tree.h: Prototype it.
 

gcc/cpphash.h

@@ -343,6 +343,10 @@ struct cpp_reader
 
   /* True if we are skipping a failed conditional group.  */
   unsigned char skipping;
+
+  /* Whether to print our version number.  Done this way so
+     we don't get it twice for -v -version.  */
+  unsigned char print_version;
 };
 
 /* Character classes.  Based on the more primitive macros in safe-ctype.h.

gcc/cppinit.c

@@ -117,8 +117,9 @@ static void new_pending_directive	PARAMS ((struct cpp_pending *,
 static void output_deps			PARAMS ((cpp_reader *));
 static int parse_option			PARAMS ((const char *));
 
-/* Fourth argument to append_include_chain: chain to use.  */
-enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };
+/* Fourth argument to append_include_chain: chain to use.
+   Note it's never asked to append to the quote chain.  */
+enum { BRACKET = 0, SYSTEM, AFTER };
 
 /* If we have designated initializers (GCC >2.7) these tables can be
    initialized, constant data.  Otherwise, they have to be filled in at
@@ -250,7 +251,6 @@ append_include_chain (pfile, dir, path, cxx_aware)
 
   switch (path)
     {
-    case QUOTE:		APPEND (pend, quote, new); break;
     case BRACKET:	APPEND (pend, brack, new); break;
     case SYSTEM:	APPEND (pend, systm, new); break;
     case AFTER:		APPEND (pend, after, new); break;
@@ -338,7 +338,7 @@ merge_include_chains (pfile)
   /* This is a bit tricky.  First we drop dupes from the quote-include
      list.  Then we drop dupes from the bracket-include list.
      Finally, if qtail and brack are the same directory, we cut out
-     brack.
+     brack and move brack up to point to qtail.
 
      We can't just merge the lists and then uniquify them because
      then we may lose directories from the <> search path that should
@@ -1316,18 +1316,14 @@ cpp_handle_option (pfile, argc, argv)
 	     verbose and -version.  Historical reasons, don't ask.  */
 	case OPT__version:
 	  CPP_OPTION (pfile, help_only) = 1;
-	  goto version;
+	  pfile->print_version = 1;
+	  break;
 	case OPT_v:
 	  CPP_OPTION (pfile, verbose) = 1;
-	  goto version;
-
+	  pfile->print_version = 1;
+	  break;
 	case OPT_version:
-	version:
-	  fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
-#ifdef TARGET_VERSION
-	  TARGET_VERSION;
-#endif
-	  fputc ('\n', stderr);
+	  pfile->print_version = 1;
 	  break;
 
 	case OPT_C:
@@ -1684,6 +1680,15 @@ void
 cpp_post_options (pfile)
      cpp_reader *pfile;
 {
+  if (pfile->print_version)
+    {
+      fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
+#ifdef TARGET_VERSION
+      TARGET_VERSION;
+#endif
+      fputc ('\n', stderr);
+    }
+
   /* Canonicalize in_fname and out_fname.  We guarantee they are not
      NULL, and that the empty string represents stdin / stdout.  */
   if (CPP_OPTION (pfile, in_fname) == NULL

gcc/toplev.c

@@ -391,6 +391,9 @@ int errorcount = 0;
 int warningcount = 0;
 int sorrycount = 0;
 
+/* Nonzero if we should exit after parsing options.  */
+static int exit_after_options = 0;
+
 /* The FUNCTION_DECL for the function currently being compiled,
    or 0 if between functions.  */
 tree current_function_decl;
@@ -4368,19 +4371,19 @@ independent_decode_option (argc, argv)
   if (!strcmp (arg, "-help"))
     {
       display_help ();
-      exit (0);
+      exit_after_options = 1;
     }
 
   if (!strcmp (arg, "-target-help"))
     {
       display_target_options ();
-      exit (0);
+      exit_after_options = 1;
     }
 
   if (!strcmp (arg, "-version"))
     {
       print_version (stderr, "");
-      exit (0);
+      exit_after_options = 1;
     }
 
   /* Handle '--param <name>=<value>'.  */
@@ -4830,6 +4833,9 @@ main (argc, argv)
   if (lang_hooks.post_options)
     (*lang_hooks.post_options) ();
 
+  if (exit_after_options)
+    exit (0);
+
   /* Reflect any language-specific diagnostic option setting.  */
   reshape_diagnostic_buffer ();