diff -Naur orig-oo2c_64-2.1.11/lib/src/RT0.c mod-oo2c_64-2.1.11/lib/src/RT0.c
--- orig-oo2c_64-2.1.11/lib/src/RT0.c	2005-10-08 11:43:02.000000000 -0400
+++ mod-oo2c_64-2.1.11/lib/src/RT0.c	2009-11-19 11:15:13.000000000 -0500
@@ -83,7 +83,7 @@
 }
 
 #ifdef USE_BOEHM_GC
-void HandleFinalize(GC_PTR ptr, GC_PTR client_data) {
+void HandleFinalize(void * ptr, void * client_data) {
   int prefix = ROUND_SIZE(sizeof(RT0__Struct));
   RT0__Object obj = (RT0__Object) (ptr + prefix);
 
@@ -127,7 +127,7 @@
 #ifdef USE_BOEHM_GC
     if (flags & (1<<RT0__flagFinalize)) { 
       GC_register_finalizer(ptr, 
-        HandleFinalize, 0, (GC_finalization_proc *) 0, (GC_PTR *) 0);
+        HandleFinalize, 0, (GC_finalization_proc *) 0, (void * *) 0);
     }
 #endif
   } else if (form == RT0__strArray) { /* fixed size array */
diff -Naur orig-oo2c_64-2.1.11/lib/src/__libc.h mod-oo2c_64-2.1.11/lib/src/__libc.h
--- orig-oo2c_64-2.1.11/lib/src/__libc.h	2003-01-08 06:44:57.000000000 -0500
+++ mod-oo2c_64-2.1.11/lib/src/__libc.h	2009-11-19 11:02:05.000000000 -0500
@@ -21,6 +21,9 @@
 
 extern double floor(double x);
 extern long int lrint(double x);
+#ifdef memcpy
+#undef memcpy
+#endif
 extern void* memcpy(void* dest, const void* src, __typeof__(sizeof(int)) n);
 
 #endif /* __oo2c_libc__ */