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cmd/dist: require Go 1.17 for building Go

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This makes builds using earlier Go bootstrap versions fail pretty clearly:

% GOROOT_BOOTSTRAP=$HOME/sdk/go1.16 ./make.bash
Building Go cmd/dist using /Users/rsc/sdk/go1.16. (go1.16 darwin/amd64)
found packages main (build.go) and building_Go_requires_Go_1_17_or_later (notgo117.go) in /Users/rsc/go/src/cmd/dist
%

All the builders have Go 1.17 or later for bootstrap now except
for the android corellium builders, which still need updating (#54246).
We are accepting breakage on those for now.

Fixes #44505.

Change-Id: I12a67f42f61dba43a331cee0a150194d3e42c044
Reviewed-on: https://go-review.googlesource.com/c/go/+/420902
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Austin Clements <austin@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
This commit is contained in:
Russ Cox 2022-08-03 22:50:37 -04:00
parent 1e3c19f3fe
commit ab0a94c6d3
1 changed files with 22 additions and 0 deletions
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22
src/cmd/dist/notgo117.go vendored Normal file
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// Copyright 2022 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.
// Go 1.20 and later requires Go 1.17 as the bootstrap toolchain.
// If cmd/dist is built using an earlier Go version, this file will be
// included in the build and cause an error like:
//
// % GOROOT_BOOTSTRAP=$HOME/sdk/go1.16 ./make.bash
// Building Go cmd/dist using /Users/rsc/sdk/go1.16. (go1.16 darwin/amd64)
// found packages main (build.go) and building_Go_requires_Go_1_17_or_later (notgo117.go) in /Users/rsc/go/src/cmd/dist
// %
//
// which is the best we can do under the circumstances.
//
// See go.dev/issue/44505 for more background on
// why Go moved on from Go 1.4 for bootstrap.
//go:build !go1.17
// +build !go1.17
package building_Go_requires_Go_1_17_or_later