1 // Copyright 2022 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // Go 1.22 and later requires Go 1.20 as the bootstrap toolchain. 6 // If cmd/dist is built using an earlier Go version, this file will be 7 // included in the build and cause an error like: 8 // 9 // % GOROOT_BOOTSTRAP=$HOME/sdk/go1.16 ./make.bash 10 // Building Go cmd/dist using /Users/rsc/sdk/go1.16. (go1.16 darwin/amd64) 11 // found packages main (build.go) and building_Go_requires_Go_1_20_6_or_later (notgo120.go) in /Users/rsc/go/src/cmd/dist 12 // % 13 // 14 // which is the best we can do under the circumstances. 15 // 16 // See go.dev/issue/44505 for more background on 17 // why Go moved on from Go 1.4 for bootstrap. 18 19 //go:build !go1.20 20 21 package building_Go_requires_Go_1_20_6_or_later 22