/bin/ld: pypy_module_gc.o: in function `pypy_g_disable':
	pypy_module_gc.c:(.text+0x4): undefined reference to `OP_GC__DISABLE'
	/bin/ld: pypy_module_gc.o: in function `pypy_g_enable':
	pypy_module_gc.c:(.text+0x257): undefined reference to `OP_GC__ENABLE'
	/bin/ld: pypy_module_gc.o: in function `pypy_g_collect_step':
	pypy_module_gc.c:(.text+0x755): undefined reference to `OP_GC__COLLECT_STEP'
	/bin/ld: pypy_module_gc.o: in function `pypy_g_StepCollector_do':
	pypy_module_gc.c:(.text+0x98d): undefined reference to `OP_GC__COLLECT_STEP'
	collect2: error: ld returned 1 exit status
	make: *** [Makefile:581: pypy-c] Error 1