ml.data[3] = 0       // ntools
		}
	}

	// empirically, string table must begin with " \x00".
	s := ctxt.loader.LookupOrCreateSym(".machosymstr", 0)
	sb := ctxt.loader.MakeSymbolUpdater(s)

	sb.SetType(sym.SMACHOSYMSTR)
	sb.SetReachable(true)
	sb.AddUint8(' ')
	sb.AddUint8('\x00')

	s = ctxt.loader.LookupOrCreateSym(".machosymtab", 0)
	sb = ctxt.loader.MakeSymbolUpdater(s)