diff --git a/varargs.h b/varargs.h
new file mode 100644
index 00000000..daee29e8
--- /dev/null
+++ b/varargs.h
@@ -0,0 +1,11 @@
+#ifndef _VARARGS_H
+#define _VARARGS_H
+
+#include <stdarg.h>
+
+#define va_dcl
+#define va_alist __va_alist
+#undef va_start
+#define va_start(ap) ap = __builtin_varargs_start
+
+#endif