Stop using nacl private, and pthread private libs for gold.nexe (can use IRT).

gold/Makefile.am

 ## Process this file with automake to generate Makefile.in
 #
 #  Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
 #  Free Software Foundation, Inc.
 #
 # This file is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 3 of the License, or
 # (at your option) any later version.
 #
@@ skipping 28 matching lines @@
 
 if PLUGINS
 LIBDL = @DLOPEN_LIBS@
 endif
 
 if THREADS
 THREADSLIB = -lpthread
 endif
 
 if NACLSRPC
-# NOTE: we use --noirt to specify that private libraries should
-# be used instead of the stable IRT interface.
-NACLSRPCLIBS = -lsrpc -lplatform -limc -limc_syscalls -lgio -lpthread

[Mark Seaborn, 2014/11/07 02:36:38]

Does gold use libpthread?  I think libsrpc does, anyway.  It's probably good to
list it explicitly.  pnacl-clang++ might add libpthread automatically when
linking but that's a bit of a hack (due to libc++'s libpthread dependency).

[jvoung (off chromium), 2014/11/07 16:24:06]

Okay, no harm in keeping it here for now. Done.

-NACLLDFLAGS = -Wl,--noirt
+NACLSRPCLIBS = -lsrpc -lplatform -limc -limc_syscalls -lgio
 else
 if LINUX
 NACLLDFLAGS = -Wl,-rpath='$$ORIGIN/../lib'
 endif
 endif
 
 AM_YFLAGS = -d
 
 # Automake 1.10+ disables lex and yacc output file regeneration if
 # maintainer mode is disabled.  Avoid this.
@@ skipping 308 matching lines @@
 endif
 
 bootstrap-test-treehash-chunksize: ld1 ld4
         rm -f $@
         echo "#!/bin/sh" > $@
         echo "cmp ld1 ld4 | grep ." >> $@
         chmod +x $@
 
 endif
 endif