diff --git a/contrib/libgmp/mpn/sysv.h b/contrib/libgmp/mpn/sysv.h
new file mode 100644
index 000000000000..87c250902a58
--- /dev/null
+++ b/contrib/libgmp/mpn/sysv.h
@@ -0,0 +1 @@
+#define C_SYMBOL_NAME(name) name