[NaCl SDK] Compile for naclio for Bionic

native_client_sdk/src/libraries/nacl_io/syscalls/tcdrain.c

Index: native_client_sdk/src/libraries/nacl_io/syscalls/tcdrain.c
diff --git a/native_client_sdk/src/libraries/nacl_io/syscalls/tcdrain.c b/native_client_sdk/src/libraries/nacl_io/syscalls/tcdrain.c
index 49c078bb0c09fbe59774eb3500ef6ccd15989753..866dfb40306b167c4e135d738e8edc08c7831ee8 100644
--- a/native_client_sdk/src/libraries/nacl_io/syscalls/tcdrain.c
+++ b/native_client_sdk/src/libraries/nacl_io/syscalls/tcdrain.c
@@ -2,6 +2,14 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
+#include <sys/types.h>
+/*
+ * Include something that will define __BIONIC__, then wrap the entire file
+ * in this #if, so this file will be compiled on a non-bionic build.
+ */
+
+#if !defined(__BIONIC__)
+
 #include <errno.h>
 
 #include "nacl_io/kernel_intercept.h"
@@ -11,3 +19,5 @@ int tcdrain(int fd) {
   errno = ENOSYS;
   return -1;
 }
+
+#endif /* #if !defined(__BIONIC_) */