--- a/gcc/config/sol2-protos.h	Sun Aug 21 07:07:55 2011 +0900
+++ b/gcc/config/sol2-protos.h	Fri Oct 27 22:46:09 2017 +0900
@@ -1,6 +1,6 @@
 /* Operating system specific prototypes to be used when targeting GCC for any
    Solaris 2 system.
-   Copyright 2004, 2007, 2010 Free Software Foundation, Inc.
+   Copyright (C) 2004-2017 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -18,7 +18,16 @@
 along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
 
+/* In sol2.c.  */
+extern void solaris_assemble_visibility (tree, int);
+extern void solaris_elf_asm_comdat_section (const char *, unsigned int, tree);
+extern void solaris_file_end (void);
 extern void solaris_insert_attributes (tree, tree *);
+extern void solaris_output_init_fini (FILE *, tree);
+extern void solaris_override_options (void);
+
+/* In sol2-c.c.  */
 extern void solaris_register_pragmas (void);
-extern void solaris_output_init_fini (FILE *, tree);
-extern void solaris_assemble_visibility (tree, int);
+
+/* In sol2-cxx.c.  */
+extern tree solaris_cxx_decl_mangling_context (const_tree);