[Bug go/81421] Circular runtime.s-gox -> runtime.lo dependency dropped -> objcopy: 'runtime.s-gox.tmp': No such file

["mfe at live dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81421

--- Comment #13 from martin <mfe at live dot de> ---
Thanks for the fast reply.
It prints:

nas-02-90-38:/media/gcc-7.1.0/libgo# sed '/^package /q' <
/media/gcc-7.1.0/libgo/go/runtime/mksizeclasses.go
// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// +build ignore

// Generate tables for small malloc size classes.
//
// See malloc.go for overview.
//
// The size classes are chosen so that rounding an allocation
// request up to the next size class wastes at most 12.5% (1.125x).
//
// Each size class has its own page count that gets allocated
// and chopped up when new objects of the size class are needed.
// That page count is chosen so that chopping up the run of
// pages into objects of the given size wastes at most 12.5% (1.125x)
// of the memory. It is not necessary that the cutoff here be
// the same as above.
//
// The two sources of waste multiply, so the worst possible case
// for the above constraints would be that allocations of some
// size might have a 26.6% (1.266x) overhead.
// In practice, only one of the wastes comes into play for a
// given size (sizes < 512 waste mainly on the round-up,
// sizes > 512 waste mainly on the page chopping).
//
// TODO(rsc): Compute max waste for any given size.

package main
nas-02-90-38:/media/gcc-7.1.0/libgo#