--- ffcall-1.10+2.43/callback/trampoline_r/trampoline_r.h.in
+++ ffcall-1.10+2.43/callback/trampoline_r/trampoline_r.h.in	    2003-12-10 22:04:30.000000000 -0800
@@ -22,4 +22,9 @@ extern __TR_function trampoline_r_addres
 extern void* trampoline_r_data0 (void*);
 extern void* trampoline_r_data1 (void*);
 
+/* http://article.gmane.org/gmane.lisp.clisp.general/7485 */
+#ifndef MAP_VARIABLE
+# define MAP_VARIABLE 0
+#endif
+
 #endif /* _TRAMPOLINE_R_H */