* cref.cc: New file.

	* cref.h: New file.
	* options.h (class General_options): Add --print-symbol-counts.
	* main.cc (main): Issue defined symbol report if requested.
	* archive.cc (Archive::interpret_header): Make into a const member
	function.
	(Archive::add_symbols): Call Input_objects::archive_start and
	archive_stop.
	(Archive::const_iterator): Define new class.
	(Archive::begin, Archive::end): New functions.
	(Archive::include_all_members): Rewrite to use iterator.
	(Archive::count_members): New function.
	* archive.h (class Archive): Update declarations.
	(Archive::filename): New function.
	* object.cc: Include "cref.h".
	(Sized_relobj::Sized_relobj): Initialize defined_count_.
	(Sized_relobj::do_get_global_symbol_counts): New function.
	(Input_objects::add_object): Add object to cross-referencer.
	(Input_objects::archive_start): New function.
	(Input_objects::archive_stop): New function.
	(Input_objects::print_symbol_counts): New function.
	* object.h: Declare Cref and Archive.
	(Object::get_global_symbol_counts): New function.
	(Object::do_get_global_symbol_counts): New pure virtual function.
	(class Sized_relobj): Add defined_count_ field.  Update
	declarations.
	(class Input_objects): Add cref_ field.  Update constructor.
	Update declarations.
	* dynobj.cc (Sized_dynobj::Sized_dynobj): Initialize symbols_ and
	defined_count_.
	(Sized_dynobj::do_add_symbols): Allocate symbols_ if printing
	symbol counts.
	(Sized_dynobj::do_get_global_symbol_counts): New function.
	* dynobj.h (class Sized_dynobj): Add fields symbols_ and
	defined_count_.  Update declarations.  Define Symbols typedef.
	* symtab.cc (Symbol_table::add_from_relobj): Add defined
	parameter.  Change all callers.
	(Symbol_table::add_from_dynobj): Add sympointers and defined
	parameters.  Change all callers.
	* symtab.h (class Symbol_table): Update declarations.
	* Makefile.am (CCFILES): Add cref.cc.
	(HFILES): Add cref.h.
	* Makefile.in: Rebuild.

1 files changed, 29 insertions, 2 deletions

diff --git a/gold/archive.h b/gold/archive.h
index c8b05e442d..53b8452d81 100644
--- a/gold/archive.h
+++ b/gold/archive.h
@@ -62,11 +62,18 @@ class Archive
   // The string expected at the end of an archive member header.
   static const char arfmag[2];
 
-  // The name of the object.
+  // The name of the object.  This is the name used on the command
+  // line; e.g., if "-lgcc" is on the command line, this will be
+  // "gcc".
   const std::string&
   name() const
   { return this->name_; }
 
+  // The file name.
+  const std::string&
+  filename() const
+  { return this->input_file_->filename(); }
+
   // Set up the archive: read the symbol map.
   void
   setup();
@@ -110,6 +117,11 @@ class Archive
   clear_uncached_views()
   { this->input_file_->file().clear_uncached_views(); }
 
+  // Whether this is a thin archive.
+  bool
+  is_thin_archive() const
+  { return this->is_thin_archive_; }
+
   // Unlock any nested archives.
   void
   unlock_nested_archives();
@@ -119,6 +131,10 @@ class Archive
   void
   add_symbols(Symbol_table*, Layout*, Input_objects*, Mapfile*);
 
+  // Return the number of members in the archive.
+  size_t
+  count_members() const;
+
  private:
   Archive(const Archive&);
   Archive& operator=(const Archive&);
@@ -144,7 +160,7 @@ class Archive
   // member, and set *PNAME to the name.
   off_t
   interpret_header(const Archive_header* hdr, off_t off, std::string* pname,
-                   off_t* nested_off);
+                   off_t* nested_off) const;
 
   // Include all the archive members in the link.
   void
@@ -155,6 +171,17 @@ class Archive
   include_member(Symbol_table*, Layout*, Input_objects*, off_t off,
 		 Mapfile*, Symbol*, const char* why);
 
+  // Iterate over archive members.
+  class const_iterator;
+
+  const_iterator
+  begin() const;
+
+  const_iterator
+  end() const;
+
+  friend class const_iterator;
+
   // An entry in the archive map of symbols to object files.
   struct Armap_entry
   {