link with validator_ragel only in standalone binaries

src/trusted/service_runtime/sel_validate_image.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.
  */
 
 #include "native_client/src/shared/platform/nacl_log.h"
 #include "native_client/src/trusted/service_runtime/sel_ldr.h"
 #include "native_client/src/trusted/validator/ncvalidate.h"
 
@@ skipping 16 matching lines @@
   }
 }
 
 typedef NaClValidationStatus (*ValidateFunc) (
     uintptr_t, uint8_t*, size_t, int, int,
     const NaClCPUFeatures*, struct NaClValidationCache*);
 
 static ValidateFunc NaClSelectValidator(struct NaClApp *nap) {
   ValidateFunc ret = NACL_SUBARCH_NAME(ApplyValidator,
                                        NACL_TARGET_ARCH, NACL_TARGET_SUBARCH);
-#ifdef __arm__
+  /* Avoid linking two validators into Chromium to keep download size small. */
+#if defined(__arm__) || !defined(NACL_STANDALONE)
   UNREFERENCED_PARAMETER(nap);
 #else
   if (nap->enable_dfa_validator) {
     ret = NACL_SUBARCH_NAME(ApplyDfaValidator,
                             NACL_TARGET_ARCH, NACL_TARGET_SUBARCH);
   }
 #endif
   return ret;
 }
 
@@ skipping 116 matching lines @@
         NaClLog(LOG_ERROR,
                 "Run sel_ldr in debug mode to ignore validation failure.\n");
         NaClLog(LOG_ERROR,
                 "Run ncval <module-name> for validation error details.\n");
         rcode = LOAD_VALIDATION_FAILED;
       }
     }
   }
   return rcode;
 }