Create a build_config header file.

src/trusted/service_runtime/linux/x86/nacl_ldt.c

 /*
  * Copyright (c) 2012 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /*
  * NaCl local descriptor table manipulation support.
  */
 
 #include <asm/ldt.h>
 #include <stdio.h>
+
+#include "native_client/src/include/nacl_defines.h"
+
 #if NACL_ANDROID
 #include <sys/syscall.h>
 #endif
 
 #include "native_client/src/shared/platform/nacl_sync.h"
 #include "native_client/src/shared/platform/nacl_sync_checked.h"
 #include "native_client/src/trusted/service_runtime/arch/x86/nacl_ldt_x86.h"
 #include "native_client/src/trusted/service_runtime/arch/x86/sel_ldr_x86.h"
 
 #if NACL_ANDROID
@@ skipping 271 matching lines @@
   ud.limit = 0;
   ud.limit_in_pages = 0;
   ud.read_exec_only = 0;
   ud.seg_32bit = 0;
   ud.useable = 0;
   ud.contents = MODIFY_LDT_CONTENTS_DATA;
   NaClXMutexLock(&nacl_ldt_mutex);
   modify_ldt(1, &ud, sizeof ud);
   NaClXMutexUnlock(&nacl_ldt_mutex);
 }