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x/mobile: gomobile bind on M1 panics when building for iOS if the Android NDK is installed #47296

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iamcalledrob opened this issue Jul 20, 2021 · 2 comments
Closed

x/mobile: gomobile bind on M1 panics when building for iOS if the Android NDK is installed #47296

iamcalledrob opened this issue Jul 20, 2021 · 2 comments
Labels
FrozenDueToAge mobile Android, iOS, and x/mobile
Milestone
Unreleased

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@iamcalledrob
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iamcalledrob commented Jul 20, 2021 •
edited

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

$ go version
go version go1.16.5 darwin/arm64

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
GO111MODULE=""
GOARCH="arm64"
GOBIN=""
GOCACHE="/Users/rob/Library/Caches/go-build"
GOENV="/Users/rob/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="arm64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/rob/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/rob/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_arm64"
GOVCS=""
GOVERSION="go1.16.5"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/rob/Code/push/xplat/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/3l/mj1p0_6x3dnb850mkd9ph8b00000gn/T/go-build3886656969=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

I ran gomobile bind -target ios on an Apple Silicon mac with the Android NDK installed (and therefore ANDROID_NDK_HOME exported to my path).

What did you expect to see?

The bind command execute and build for iOS.

What did you see instead?

panic: unsupported GOARCH: arm64

goroutine 1 [running]:
main.archNDK(...)
	/Users/rob/go/pkg/mod/golang.org/x/mobile@v0.0.0-20210716004757-34ab1303b554/cmd/gomobile/env.go:298
main.(*ndkToolchain).Path(0x140000a3bc0, 0x140000180d1, 0x2f, 0x10506e3c2, 0x5, 0x0, 0x140000a39f8)

There seem to be 2 compounding issues leading to this:

  1. archNDK() panics when run on arm64. (Ideally, the NDK could be invoked using Rosetta if the GOARCH is arm64)
  2. env.go attempts to set up the Android cross-compiler (invoking archNDK()) even when the gomobile target is iOS.

This leads to the issue that simply having the NDK installed causes a panic—even when building for iOS only.
@gopherbot gopherbot added the mobile Android, iOS, and x/mobile label Jul 20, 2021
@gopherbot gopherbot added this to the Unreleased milestone Jul 20, 2021
@AlexRouSg
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Looks like a duplicate of #46464

@seankhliao
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Duplicate of #46464

@seankhliao seankhliao marked this as a duplicate of #46464 Jul 20, 2021
@golang golang locked and limited conversation to collaborators Jul 20, 2022
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Labels
FrozenDueToAge mobile Android, iOS, and x/mobile
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@iamcalledrob @AlexRouSg @gopherbot @seankhliao