diff --git a/liblog/fake_log_device.c b/liblog/fake_log_device.c
index 5283619..be34f01 100644
--- a/liblog/fake_log_device.c
+++ b/liblog/fake_log_device.c
@@ -19,6 +19,8 @@
  * passed on to the underlying (fake) log device.  When not in the
  * simulator, messages are printed to stderr.
  */
+#include "fake_log_device.h"
+
 #include <log/logd.h>
 
 #include <stdlib.h>
diff --git a/liblog/fake_log_device.h b/liblog/fake_log_device.h
new file mode 100644
index 0000000..9d168cd
--- /dev/null
+++ b/liblog/fake_log_device.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBLOG_FAKE_LOG_DEVICE_H
+#define _LIBLOG_FAKE_LOG_DEVICE_H
+
+#include <sys/types.h>
+
+struct iovec;
+
+int fakeLogOpen(const char *pathName, int flags);
+int fakeLogClose(int fd);
+ssize_t fakeLogWritev(int fd, const struct iovec* vector, int count);
+
+#endif // _LIBLOG_FAKE_LOG_DEVICE_H
diff --git a/liblog/logd_write.c b/liblog/logd_write.c
index fff7cc4..19d7166 100644
--- a/liblog/logd_write.c
+++ b/liblog/logd_write.c
@@ -35,6 +35,7 @@
 
 #if FAKE_LOG_DEVICE
 // This will be defined when building for the host.
+#include "fake_log_device.h"
 #define log_open(pathname, flags) fakeLogOpen(pathname, flags)
 #define log_writev(filedes, vector, count) fakeLogWritev(filedes, vector, count)
 #define log_close(filedes) fakeLogClose(filedes)
@@ -50,6 +51,8 @@
 static pthread_mutex_t log_init_lock = PTHREAD_MUTEX_INITIALIZER;
 #endif
 
+#define UNUSED  __attribute__((__unused__))
+
 static int log_fds[(int)LOG_ID_MAX] = { -1, -1, -1, -1 };
 
 /*
@@ -72,7 +75,8 @@
     return (g_log_status == kLogAvailable);
 }
 
-static int __write_to_log_null(log_id_t log_fd, struct iovec *vec, size_t nr)
+static int __write_to_log_null(UNUSED log_id_t log_fd, UNUSED struct iovec *vec,
+        UNUSED size_t nr)
 {
     return -1;
 }