--- /dev/null
+#if !defined(DECIMAL64SYMBOLS)
+#define DECIMAL64SYMBOLS
+
+#ifdef IN_LIBGCC2
+#define decDigitsFromDPD __decDigitsFromDPD
+#define decDigitsToDPD __decDigitsToDPD
+#define decimal64Canonical __decimal64Canonical
+#define decimal64FromNumber __decimal64FromNumber
+#define decimal64FromString __decimal64FromString
+#define decimal64IsCanonical __decimal64IsCanonical
+#define decimal64ToEngString __decimal64ToEngString
+#define decimal64ToNumber __decimal64ToNumber
+#define decimal64ToString __decimal64ToString
+#define COMBEXP __decnnCOMBEXP
+#define COMBMSD __decnnCOMBMSD
+
+/* DPD2BIN and BIN2DPD are used in support for decimal32/decimal64/decimal128
+ and also in support for decSingle/decDouble/decQuad. Rename them in case
+ both types of support are used in the same executable. */
+#undef DPD2BIN
+#define DPD2BIN __decnnDPD2BIN
+#undef BIN2DPD
+#define BIN2DPD __decnnBIN2DPD
+#endif
+
+#endif