[gcc] Make command line for static linking similar to what native gcc does

gcc/config/i386/nacl.h

 /* Target definitions for GCC for NativeClient using ELF
    Copyright (C) 1988, 1991, 1995, 2000, 2001, 2002
    Free Software Foundation, Inc.
 
    Derived from sysv4.h written by Ron Guilmette (rfg@netcom.com).
 
 This file is part of GCC.
 
 GCC is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ skipping 151 matching lines @@
 #undef  LINK_SPEC
 #define LINK_SPEC "%{" SPEC_64 ":-m elf64_nacl} %{" SPEC_32 ":-m elf_nacl} \
   %{shared:-shared} \
   %{!shared: \
     %{!static: \
       %{rdynamic:-export-dynamic} \
       %{" SPEC_32 ":%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "}} \
       %{" SPEC_64 ":%{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}} \
     %{static:-static}}"
 
+#undef LINK_GCC_C_SEQUENCE_SPEC
+#define LINK_GCC_C_SEQUENCE_SPEC \
+  "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
+
 #if TARGET_64BIT_DEFAULT
 #define MULTILIB_DEFAULTS { "m64" }
 #else
 #define MULTILIB_DEFAULTS { "m32" }
 #endif
 
 #undef NEED_INDICATE_EXEC_STACK
 #define NEED_INDICATE_EXEC_STACK 1
 
 #define MD_UNWIND_SUPPORT "config/i386/linux-unwind.h"
@@ skipping 103 matching lines @@
 #undef TARGET_USE_BT
 #define TARGET_USE_BT           (ix86_tune_features[X86_TUNE_USE_BT] && !TARGET_NACL)
 
 #undef DBX_REGISTER_NUMBER
 #define DBX_REGISTER_NUMBER(n) \
   (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
 
 #define DWARF2_ADDR_SIZE \
     (TARGET_NACL ? (TARGET_64BIT ? 8 : 4) : \
                    (POINTER_SIZE / BITS_PER_UNIT))