diff --git a/ap/build/uClibc/libc/string/strncat.c b/ap/build/uClibc/libc/string/strncat.c
new file mode 100644
index 0000000..0fa9b4a
--- /dev/null
+++ b/ap/build/uClibc/libc/string/strncat.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2002     Manuel Novoa III
+ * Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#include "_string.h"
+
+#ifdef WANT_WIDE
+# define Wstrncat wcsncat
+#else
+# define Wstrncat strncat
+#endif
+
+Wchar *Wstrncat(Wchar * __restrict s1, register const Wchar * __restrict s2,
+				size_t n)
+{
+	register Wchar *s = s1;
+
+	while (*s++);
+	--s;
+	while (n && ((*s = *s2++) != 0)) {
+		--n;
+		++s;
+	}
+	*s = 0;
+
+	return s1;
+}
+
+#ifndef WANT_WIDE
+libc_hidden_def(strncat)
+#endif