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cmd/go: can't build go1.10 from source using go1.12 #30988

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matloob opened this issue Mar 21, 2019 · 2 comments

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@matloob
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commented Mar 21, 2019

What version of Go are you using (go version)?

Go 1.12

Does this issue reproduce with the latest release?

yes

What operating system and processor architecture are you using (go env)?

go env Output
$ go env
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/matloob/Library/Caches/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/matloob/go"
GOPROXY=""
GORACE=""
GOROOT="/usr/local/go"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/dev/null"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/f4/9p58ddnj40x58zchdb36p7lr004_sl/T/go-build724269079=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

I have Go 1.12 installed on my system. I cloned the go repo and checked out the tag go1.10.8.
Then i cd'd to the go repo's src directory and ran make.bash

What did you expect to see?

a successful build

What did you see instead?

matloob-macbookpro2:src matloob$ ./make.bash
Building Go cmd/dist using /usr/local/go.
go: cannot determine module path for source directory /Users/matloob/go110 (outside GOPATH, no import comments)

But make.bash does work when GO111MODULE is unset

@josharian

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commented Mar 21, 2019

@ALTree ALTree changed the title can't build go1.10 from source using go1.12 cmd/go: can't build go1.10 from source using go1.12 Mar 22, 2019

@bcmills bcmills added this to the Go1.13 milestone Apr 2, 2019

@bcmills bcmills self-assigned this Apr 2, 2019

@rsc

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commented Apr 2, 2019

We should fix this. We want old go trees to keep building with new ones as bootstrap. cmd/dist is a single-directory main package binary.

@bcmills bcmills added the NeedsFix label Apr 9, 2019

@andybons andybons modified the milestones: Go1.13, Go1.14 Jul 8, 2019

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