diff --git a/libc/include/locale.h b/libc/include/locale.h
new file mode 100644
index 0000000..2a11b04
--- /dev/null
+++ b/libc/include/locale.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#ifndef _LOCALE_H_
+#define _LOCALE_H_
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+enum {
+    LC_CTYPE     = 0,
+    LC_NUMERIC   = 1,
+    LC_TIME      = 2,
+    LC_COLLATE   = 3,
+    LC_MONETARY  = 4,
+    LC_MESSAGES  = 5,
+    LC_ALL       = 6,
+    LC_PAPER     = 7,
+    LC_NAME      = 8,
+    LC_ADDRESS   = 9,
+
+    LC_TELEPHONE      = 10,
+    LC_MEASUREMENT    = 11,
+    LC_IDENTIFICATION = 12
+};
+
+extern char *setlocale(int category, const char *locale);
+
+__END_DECLS
+
+#endif /* _LOCALE_H_ */