diff --git a/ap/build/uClibc/libc/stdio/setbuffer.c b/ap/build/uClibc/libc/stdio/setbuffer.c
new file mode 100644
index 0000000..b566bfc
--- /dev/null
+++ b/ap/build/uClibc/libc/stdio/setbuffer.c
@@ -0,0 +1,25 @@
+/* Copyright (C) 2004       Manuel Novoa III    <mjn3@codepoet.org>
+ *
+ * GNU Library General Public License (LGPL) version 2 or later.
+ *
+ * Dedicated to Toni.  See uClibc/DEDICATION.mjn3 for details.
+ */
+
+#include "_stdio.h"
+
+#ifdef __USE_BSD
+
+
+/* A BSD function.  The implementation matches the linux man page,
+ * except that we do not bother calling setvbuf if not configured
+ * for stream buffering.
+ */
+
+void setbuffer(FILE * __restrict stream, register char * __restrict buf,
+			   size_t size)
+{
+#ifdef __STDIO_BUFFERS
+	setvbuf(stream, buf, (buf ? _IOFBF : _IONBF), size);
+#endif
+}
+#endif