Add dlwrap.c to binutils to simulate dlopen/dlsym for gold plugin

binutils-2.20/ld/Makefile.in

 # Makefile.in generated by automake 1.11.1 from Makefile.am.
 # @configure_input@
 
 # Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
 # 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
 # Inc.
 # This Makefile.in is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
 
@@ skipping 66 matching lines @@
 @ENABLE_PLUGINS_TRUE@am_libldtestplug_la_OBJECTS =  \
 @ENABLE_PLUGINS_TRUE@   libldtestplug_la-testplug.lo
 libldtestplug_la_OBJECTS = $(am_libldtestplug_la_OBJECTS)
 libldtestplug_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
         $(LIBTOOLFLAGS) --mode=link $(CCLD) $(libldtestplug_la_CFLAGS) \
         $(CFLAGS) $(libldtestplug_la_LDFLAGS) $(LDFLAGS) -o $@
 @ENABLE_PLUGINS_TRUE@am_libldtestplug_la_rpath =
 am__installdirs = "$(DESTDIR)$(bindir)" "$(DESTDIR)$(infodir)" \
         "$(DESTDIR)$(man1dir)"
 PROGRAMS = $(bin_PROGRAMS)
-@ENABLE_PLUGINS_TRUE@am__objects_1 = plugin.$(OBJEXT)
+@ENABLE_PLUGINS_TRUE@am__objects_1 = plugin.$(OBJEXT) dlwrap.$(OBJEXT)
 am_ld_new_OBJECTS = ldgram.$(OBJEXT) ldlex-wrapper.$(OBJEXT) \
         lexsup.$(OBJEXT) ldlang.$(OBJEXT) mri.$(OBJEXT) \
         ldctor.$(OBJEXT) ldmain.$(OBJEXT) ldwrite.$(OBJEXT) \
         ldexp.$(OBJEXT) ldemul.$(OBJEXT) ldver.$(OBJEXT) \
         ldmisc.$(OBJEXT) ldfile.$(OBJEXT) ldcref.$(OBJEXT) \
         $(am__objects_1)
 ifeq ($(NACL_SRPC),1)
 ld_new_OBJECTS = $(am_ld_new_OBJECTS) nacl_file.$(OBJEXT)
 else
 ld_new_OBJECTS = $(am_ld_new_OBJECTS)
@@ skipping 262 matching lines @@
 tooldir = $(exec_prefix)/$(target_alias)
 
 # Automake 1.10+ disables lex and yacc output file regeneration if
 # maintainer mode is disabled.  Avoid this.
 am__skiplex = 
 am__skipyacc = 
 AM_CFLAGS = $(WARN_CFLAGS)
 @ENABLE_PLUGINS_FALSE@PLUGIN_C = 
 
 # Conditionally enable the plugin interface.
-@ENABLE_PLUGINS_TRUE@PLUGIN_C = plugin.c
+@ENABLE_PLUGINS_TRUE@PLUGIN_C = plugin.c dlwrap.c
 @ENABLE_PLUGINS_FALSE@PLUGIN_H = 
-@ENABLE_PLUGINS_TRUE@PLUGIN_H = plugin.h
+@ENABLE_PLUGINS_TRUE@PLUGIN_H = plugin.h dlwrap.h
 @ENABLE_PLUGINS_FALSE@PLUGIN_OBJECT = 
-@ENABLE_PLUGINS_TRUE@PLUGIN_OBJECT = plugin.@OBJEXT@
+@ENABLE_PLUGINS_TRUE@PLUGIN_OBJECT = plugin.@OBJEXT@ dlwrap.@OBJEXT@
 @ENABLE_PLUGINS_FALSE@PLUGIN_CFLAGS = 
 @ENABLE_PLUGINS_TRUE@PLUGIN_CFLAGS = -DENABLE_PLUGINS
 
 # We put the scripts in the directory $(scriptdir)/ldscripts.
 # We can't put the scripts in $(datadir) because the SEARCH_DIR
 # directives need to be different for native and cross linkers.
 scriptdir = $(tooldir)/lib
 BASEDIR = $(srcdir)/..
 BFDDIR = $(BASEDIR)/bfd
 INCDIR = $(BASEDIR)/include
@@ skipping 3187 matching lines @@
 # Both info (ld.info) and ld.1 depend on configdoc.texi.
 # But info isn't a direct target. Make info-recursive to depend on
 # ld.1 to support parallel build.
 info-recursive: ld.1
 distclean-local:
         rm -rf ldscripts
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
 .NOEXPORT: