building <go-1.16 fails with SIGKILL on M1/arm64 chipset

[rbcrwd]

NB: this originated in trying to use moovweb/gvm to install older versions of Go on an M1 mac. If earlier versions of Go are not expected to build for GOOS=darwin GOARCH=arm64, please disregard.

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

$ go version
go version go1.16.2 darwin/arm64

Does this issue reproduce with the latest release?

No.

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

go env Output

$ go env
GO111MODULE=""
GOARCH="arm64"
GOBIN=""
GOCACHE="/Users/spaetzle/Library/Caches/go-build"
GOENV="/Users/spaetzle/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="arm64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/spaetzle/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/spaetzle/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/Users/spaetzle/sdk/go1.16.2"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/Users/spaetzle/sdk/go1.16.2/pkg/tool/darwin_arm64"
GOVCS=""
GOVERSION="go1.16.2"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/spaetzle/src/go/src/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -arch arm64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/xw/3_r56yvs1fx3b7d4wrwqsrrw0000gn/T/go-build679719235=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

1. bone-stock M1 Mac, v11.2.3
2. Install brew.sh + go Go (brew install go)
3. go get golang.org/dl/go1.16.2
4. go1.16.2 download
5. export PATH="$HOME/sdk/go1.16.2/bin:$PATH"
6. mkdir ~/src && cd ~/src && git clone https://github.com/golang/go.git
7. cd ~/src/go/src && git checkout go1.15.10
8. ./all.bash

What did you expect to see?

Completed build of go1.15.10

What did you see instead?

Building Go cmd/dist using /Users/spaetzle/sdk/go1.16.2. (go1.16.2 darwin/arm64)
Building Go toolchain1 using /Users/spaetzle/sdk/go1.16.2.
Building Go bootstrap cmd/go (go_bootstrap) using Go toolchain1.
warning: unable to find runtime/cgo.a
Building Go toolchain2 using go_bootstrap and Go toolchain1.
# cmd/cgo
ld: warning: -no_pie ignored for arm64
# cmd/asm
ld: warning: -no_pie ignored for arm64
# cmd/link
ld: warning: -no_pie ignored for arm64
# cmd/compile
ld: warning: -no_pie ignored for arm64
Building Go toolchain3 using go_bootstrap and Go toolchain2.
go tool compile: signal: killed
go tool compile: signal: killed
go tool compile: signal: killed
go tool compile: signal: killed
go tool dist: FAILED: /Users/spaetzle/src/go/pkg/tool/darwin_arm64/go_bootstrap install -gcflags=all= -ldflags=all= -a -i cmd/asm cmd/cgo cmd/compile cmd/link: exit status 1

Each failure produces a similar (albeit opaque) log in Console.app:
Mar 12 16:15:27 spaetzle com.apple.xpc.launchd[1] (com.apple.mdworker.shared.0E000000-0100-0000-0000-000000000000[57775]) <Notice>: Service exited due to SIGKILL | sent by mds[514]

[rbcrwd]

This does seem similar to some of the details published in #42684, but that seemed to go in a different direction.

[dmitshur]

If earlier versions of Go are not expected to build for GOOS=darwin GOARCH=arm64, please disregard.

Go 1.16 is the first version of Go that adds support for Apple silicon. Go 1.15 and older versions don’t support it. Back then, GOOS=darwin GOARCH=arm64 was a way of targeting iOS. See https://golang.org/doc/go1.16#ports.

CC @cherrymui, @golang/release.

[rbcrwd]

Thanks for the response. That's going to create increasing tension for developers buying or replacing equipment and still supporting non-bleeding-edge toolchains or libraries with native library CGO dependencies.

This is enough of a compatibility break that I would have expected to see some sort of documentation. Unfortunately, while the 1.16 release notes do mention the darwin->ios shift, they do not indicate that 1.15 and below will not be supported on the chipset, nor does the MinimumRequirements doc in this project's wiki reflect anything post-1.15.