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zhouguangyuan0718 opened this issue Dec 3, 2021 · 2 comments
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x/sys/cpu: go install -buildmode=shared std failed #49942

zhouguangyuan0718 opened this issue Dec 3, 2021 · 2 comments
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FrozenDueToAge NeedsFix The path to resolution is known, but the work has not been done.
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Unreleased

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@zhouguangyuan0718
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What version of Go are you using (go version)?

$ go version
go version devel go1.18-098599003b Fri Dec 3 01:09:21 2021 +0000 linux/amd64

Does this issue reproduce with the latest release?

No, it reproduce with tip.

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

go env Output
$ go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/root/.cache/go-build"
GOENV="/root/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/mnt/d/01.golang/01.GOPATH/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/mnt/d/01.golang/01.GOPATH/"
GOPRIVATE=""
GOPROXY="https://goproxy.cn,direct"
GOROOT="/mnt/d/01.golang/03.godev/go"
GOSUMDB="off"
GOTMPDIR=""
GOTOOLDIR="/mnt/d/01.golang/03.godev/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="devel go1.18-098599003b Fri Dec 3 01:09:21 2021 +0000"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/mnt/d/01.golang/03.godev/go/src/go.mod"
GOWORK=""
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 -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build2041059842=/tmp/go-build -gno-record-gcc-switches"

What did you do?

run the command go install -buildmode=shared std

What did you expect to see?

Install the libstd.so in $goroot/pkg/....

What did you see instead?

Failed.

$ go install -buildmode=shared std
# /tmp/go-build268340113/b232/libstd.so
vendor/golang.org/x/sys/cpu.darwinSupportsAVX512·f: missing section for relocation target vendor/golang.org/x/sys/cpu.darwinSupportsAVX512

In the CL https://go-review.googlesource.com/c/sys/+/361255, the implement of darwinSupportsAVX512 is removed in cpu_x86.s, but it didn't be removed in cpu_gc_x86.go.
https://github.com/golang/sys/blob/fe61309f888157de161a48facf03d9412635cffe/cpu/cpu_gc_x86.go#L21

It should be removed in cpu_gc_x86.go and sync it to golang/go.
@gopherbot gopherbot added this to the Unreleased milestone Dec 3, 2021
@gopherbot
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Change https://golang.org/cl/368994 mentions this issue: x/sys/cpu: remove the declaration of function darwinSupportsAVX512

@mknyszek mknyszek added the NeedsFix The path to resolution is known, but the work has not been done. label Dec 3, 2021
gopherbot pushed a commit to golang/sys that referenced this issue Dec 5, 2021
@zhouguangyuan0718 @tklauser
cpu: remove the declaration of function darwinSupportsAVX512
97ca703 
The implement of darwinSupportsAVX512 has been removed in CL 361255.
But the command "go install -buildmode=shared std" failed because the
declaration of it is remained in cpu/cpu_gc_x86.go. It should be removed.

Update golang/go#49233
For golang/go#49942

Change-Id: I8fa7c61c20457e49414930029b9f026c335aa421
Reviewed-on: https://go-review.googlesource.com/c/sys/+/368994
Reviewed-by: Tobias Klauser <[email protected]>
Reviewed-by: Keith Randall <[email protected]>
Run-TryBot: Tobias Klauser <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Trust: Ian Lance Taylor <[email protected]>
@gopherbot
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Change https://golang.org/cl/369454 mentions this issue: all: update vendored golang.org/x/sys

@golang golang locked and limited conversation to collaborators Dec 6, 2022
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