* options.h (Command_line::Pre_options): New class.

	(Command_line::pre_options): New member.
	* options.cc (gold::options::ready_to_register): New variable.
	(One_option::register_option): Do nothing if not registering options.
	Assert if same short option registered twice.
	(General_options::General_options): Turn off option registration when
	done constructing.
	(Command_line::Pre_options::Pre_options): New constructor.

1 files changed, 10 insertions, 0 deletions

diff --git a/gold/options.h b/gold/options.h
index 359866e..3f14529 100644
--- a/gold/options.h
+++ b/gold/options.h
@@ -1479,6 +1479,16 @@ class Command_line
   Command_line(const Command_line&);
   Command_line& operator=(const Command_line&);
 
+  // This is a dummy class to provide a constructor that runs before
+  // the constructor for the General_options.  The Pre_options constructor
+  // is used as a hook to set the flag enabling the options to register
+  // themselves.
+  struct Pre_options {
+    Pre_options();
+  };
+
+  // This must come before options_!
+  Pre_options pre_options_;
   General_options options_;
   Position_dependent_options position_options_;
   Script_options script_options_;