diff --git a/.gitignore b/.gitignore
index 9cc6f1f..5536487 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,5 @@ src/htmldocs/
 leveldbtool
 *.html
 *.css
+build
+
diff --git a/.gitmodules b/.gitmodules
index 06101e6..b11fceb 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
-[submodule "sources"]
-	path = sources
+[submodule "src/vendor"]
+	path = src/vendor
 	url = https://github.com/google/leveldb
diff --git a/build/include/port/port_config.h b/build/include/port/port_config.h
new file mode 100644
index 0000000..5c12e38
--- /dev/null
+++ b/build/include/port/port_config.h
@@ -0,0 +1,33 @@
+// Copyright 2017 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#ifndef STORAGE_LEVELDB_PORT_PORT_CONFIG_H_
+#define STORAGE_LEVELDB_PORT_PORT_CONFIG_H_
+
+// Define to 1 if you have a definition for fdatasync() in <unistd.h>.
+#if !defined(HAVE_FDATASYNC)
+#define HAVE_FDATASYNC 1
+#endif  // !defined(HAVE_FDATASYNC)
+
+// Define to 1 if you have a definition for F_FULLFSYNC in <fcntl.h>.
+#if !defined(HAVE_FULLFSYNC)
+#define HAVE_FULLFSYNC 0
+#endif  // !defined(HAVE_FULLFSYNC)
+
+// Define to 1 if you have a definition for O_CLOEXEC in <fcntl.h>.
+#if !defined(HAVE_O_CLOEXEC)
+#define HAVE_O_CLOEXEC 1
+#endif  // !defined(HAVE_O_CLOEXEC)
+
+// Define to 1 if you have Google CRC32C.
+#if !defined(HAVE_CRC32C)
+#define HAVE_CRC32C 0
+#endif  // !defined(HAVE_CRC32C)
+
+// Define to 1 if you have Google Snappy.
+#if !defined(HAVE_SNAPPY)
+#define HAVE_SNAPPY 0
+#endif  // !defined(HAVE_SNAPPY)
+
+#endif  // STORAGE_LEVELDB_PORT_PORT_CONFIG_H_
diff --git a/sources b/sources
deleted file mode 160000
index 99b3c03..0000000
--- a/sources
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 99b3c03b3284f5886f9ef9a4ef703d57373e61be
diff --git a/src/vendor b/src/vendor
new file mode 160000
index 0000000..068d5ee
--- /dev/null
+++ b/src/vendor
@@ -0,0 +1 @@
+Subproject commit 068d5ee1a3ac40dabd00d211d5013af44be55bea