cppfiles.c (stack_include_file): Don't handle -H here.

* cppfiles.c (stack_include_file): Don't handle -H here.
	* cppinit.c (cpp_start_read): Set include tracing after
	cpp_post_options and after stacking the main file.
	* line-map.c (trace_include): New.
	(init_line_maps, add_line_map): Update.
	* line-map.h (struct line_maps): New member trace_includes.

From-SVN: r45084

gcc/ChangeLog

@@ -1,3 +1,12 @@
+2001-08-21  Neil Booth  <neil@daikokuya.demon.co.uk>
+
+	* cppfiles.c (stack_include_file): Don't handle -H here.
+	* cppinit.c (cpp_start_read): Set include tracing after
+	cpp_post_options and after stacking the main file.
+	* line-map.c (trace_include): New.
+	(init_line_maps, add_line_map): Update.
+	* line-map.h (struct line_maps): New member trace_includes.
+
 2001-08-21  Neil Booth  <neil@daikokuya.demon.co.uk>
 
 	* cppfiles.c (stack_include_file): Harmonize system headerness tests.

gcc/cppfiles.c

@@ -313,18 +313,8 @@ stack_include_file (pfile, inc)
     }
 
   if (pfile->buffer)
-    {
-      /* We don't want MI guard advice for the main file.  */
-      inc->include_count++;
-
-      /* Handle -H option.  */
-      if (CPP_OPTION (pfile, print_include_names))
-	{
-	  for (fp = pfile->buffer; fp; fp = fp->prev)
-	    putc ('.', stderr);
-	  fprintf (stderr, " %s\n", inc->name);
-	}
-    }
+    /* We don't want MI guard advice for the main file.  */
+    inc->include_count++;
 
   /* Push a buffer.  */
   fp = cpp_push_buffer (pfile, inc->buffer, inc->st.st_size, BUF_FILE, 0);

gcc/cppinit.c

@@ -939,6 +939,11 @@ cpp_start_read (pfile, fname)
   if (!_cpp_read_file (pfile, fname))
     return 0;
 
+  /* Set this after cpp_post_options so the client can change the
+     option if it wishes, and after stacking the main file so we don't
+     trace the main file.  */
+  pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names);
+
   /* Install builtins and process command line macros etc. in the order
      they appeared, but only if not already preprocessed.  */
   if (! CPP_OPTION (pfile, preprocessed))

gcc/line-map.c

@@ -25,6 +25,9 @@ Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 #include "line-map.h"
 #include "intl.h"
 
+static void trace_include
+  PARAMS ((const struct line_maps *, const struct line_map *));
+
 /* Initialize a line map set.  */
 
 void
@@ -35,6 +38,7 @@ init_line_maps (set)
   set->allocated = 0;
   set->used = 0;
   set->last_listed = -1;
+  set->trace_includes = false;
 }
 
 /* Free a line map set.  */
@@ -136,8 +140,11 @@ add_line_map (set, reason, sysp, from_line, to_file, to_line)
     map->included_from = map[-1].included_from;
   else if (reason == LC_LEAVE)
     map->included_from = INCLUDED_FROM (set, map - 1)->included_from;
-
   set->used++;
+
+  if (reason == LC_ENTER && set->trace_includes)
+    trace_include (set, map);
+
   return map;
 }
 
@@ -207,3 +214,17 @@ print_containing_files (set, map)
 
   fputs (":\n", stderr);
 }
+
+/* Print an include trace, for e.g. the -H option of the preprocessor.  */
+
+static void
+trace_include (set, map)
+     const struct line_maps *set;
+     const struct line_map *map;
+{
+  const struct line_map *m;
+
+  for (m = map; !MAIN_FILE_P (m); m = INCLUDED_FROM (set, m))
+    putc ('.', stderr);
+  fprintf (stderr, " %s\n", map->to_file);
+}

gcc/line-map.h

@@ -59,6 +59,9 @@ struct line_maps
      LAST_LISTED as the topmost including file.  -1 indicates nothing
      has been listed yet.  */
   int last_listed;
+
+  /* If true, prints an include trace a la -H.  */
+  bool trace_includes;
 };
 
 /* Initialize a line map set.  */