diff -ur ocaml-3.04/byterun/meta.c ocaml-3.04-/byterun/meta.c
--- ocaml-3.04/byterun/meta.c	Fri Dec  7 14:39:32 2001
+++ ocaml-3.04-/byterun/meta.c	Fri May 10 10:03:30 2002
@@ -142,4 +142,19 @@
   return Val_unit; /* not reached */
 }
 
+value * stack_low;
+value * stack_high;
+value * stack_threshold;
+value * extern_sp;
+value * trapsp;
+int backtrace_active;
+int backtrace_pos;
+code_t * backtrace_buffer;
+value backtrace_last_exn;
+int callback_depth;
+int volatile something_to_do;
+void (* volatile async_action_hook)(void);
+void print_exception_backtrace(void) { }
+struct longjmp_buffer * external_raise;
+
 #endif
diff -ur ocaml-3.04/otherlibs/systhreads/Makefile ocaml-3.04-/otherlibs/systhreads/Makefile
--- ocaml-3.04/otherlibs/systhreads/Makefile	Fri May 10 10:15:25 2002
+++ ocaml-3.04-/otherlibs/systhreads/Makefile	Fri May 10 10:12:23 2002
@@ -31,7 +31,7 @@
 allopt: libthreadsnat.a threads.cmxa
 
 libthreads.a: $(BYTECODE_C_OBJS)
-	$(MKLIB) -o threads $(BYTECODE_C_OBJS)
+	$(MKLIB) -o threads $(BYTECODE_C_OBJS) $(PTHREAD_LINK)
 
 posix_b.o: posix.c
 	$(BYTECC) -O -I../../byterun $(BYTECCCOMPOPTS) $(SHAREDCCCOMPOPTS) \