diff --git a/tools/aapt/CrunchCache.cpp b/tools/aapt/CrunchCache.cpp
index 6c39d1d..0d574cf 100644
--- a/tools/aapt/CrunchCache.cpp
+++ b/tools/aapt/CrunchCache.cpp
@@ -5,6 +5,7 @@
 // This file defines functions laid out and documented in
 // CrunchCache.h
 
+#include <utils/Compat.h>
 #include <utils/Vector.h>
 #include <utils/String8.h>
 
diff --git a/tools/aapt/Main.cpp b/tools/aapt/Main.cpp
index 8b416aa..eeee2fa 100644
--- a/tools/aapt/Main.cpp
+++ b/tools/aapt/Main.cpp
@@ -6,6 +6,7 @@
 #include "Main.h"
 #include "Bundle.h"
 
+#include <utils/Compat.h>
 #include <utils/Log.h>
 #include <utils/threads.h>
 #include <utils/List.h>
diff --git a/tools/aidl/aidl.cpp b/tools/aidl/aidl.cpp
index ff08b67..368e73d 100644
--- a/tools/aidl/aidl.cpp
+++ b/tools/aidl/aidl.cpp
@@ -1,6 +1,7 @@
 
 #include "aidl_language.h"
 #include "options.h"
+#include "os.h"
 #include "search_path.h"
 #include "Type.h"
 #include "generate_java.h"
diff --git a/tools/aidl/os.h b/tools/aidl/os.h
new file mode 100644
index 0000000..79d2c35
--- /dev/null
+++ b/tools/aidl/os.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2015, 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 _FRAMEWORKS_BASE_TOOLS_AIDL_OS_SEP_H_
+#define _FRAMEWORKS_BASE_TOOLS_AIDL_OS_SEP_H_
+
+#if defined(_WIN32)
+#define OS_PATH_SEPARATOR '\\'
+#else
+#define OS_PATH_SEPARATOR '/'
+#endif
+
+#endif
diff --git a/tools/aidl/search_path.cpp b/tools/aidl/search_path.cpp
index ffb6cb2..29dbe26 100644
--- a/tools/aidl/search_path.cpp
+++ b/tools/aidl/search_path.cpp
@@ -1,6 +1,7 @@
 #include <unistd.h>
 #include "search_path.h"
 #include "options.h"
+#include "os.h"
 #include <string.h>
 
 #ifdef HAVE_MS_C_RUNTIME