x/mobile: Required use of deprecated environment variables for Android

[ToJen]

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

$ go version
go version go1.13.10 darwin/amd64

Does this issue reproduce with the latest release?

It should.

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

go env Output

$ go env
GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/user/Library/Caches/go-build"
GOENV="/Users/user/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/tomisin.jenrola/go"
GOPRIVATE=""
GOPROXY="https://proxy.server"
GOROOT="/usr/local/Cellar/go@1.13/1.13.10_1/libexec"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go@1.13/1.13.10_1/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/path/to/project/go/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 -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/.../go-build183346344=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

I ran gomobile bind -target=android -v github.com/example/package

What did you expect to see?

Output for binding. The use of the _HOME suffix has been deprecated as per this dev doc and this thread. The current suffix is _ROOT.

Temporarily I have this in my ~/.bash_profile:

export ANDROID_SDK_ROOT="$HOME/Library/Android/sdk"
export ANDROID_NDK_ROOT="$ANDROID_SDK_ROOT/ndk/21.3.6528147"

# for gomobile only
export ANDROID_HOME=$ANDROID_SDK_ROOT
export ANDROID_NDK_HOME=$ANDROID_NDK_ROOT

What did you see instead?

Before setting ANDROID_NDK_HOME

gomobile: no Android NDK found in $ANDROID_HOME/ndk-bundle nor in $ANDROID_NDK_HOME

Before setting ANDROID_HOME

gomobile: this command requires ANDROID_HOME environment variable (path to the Android SDK)

[dmitshur]

/cc @eliasnaur @hyangah @hajimehoshi

[hajimehoshi]

With #35030, I think we should update the environment variables thoroughly.

[ToJen]

Thanks @hajimehoshi , just to point out that the correct env vars are ANDROID_SDK_ROOT and ANDROID_NDK_ROOT as per the links in the original post.

[federicobond]

Hi there, I just submitted a fix for this issue in golang/mobile#51, which particularly affects NDKs installed with latest versions of Android Studio. According to the docs here, newer versions of the NDK are no longer installed into $ANDROID_SDK_HOME/ndk-bundle

[ToJen]

thanks @federicobond , will it be reviewed

[gopherbot]

Change https://golang.org/cl/247357 mentions this issue: env/android-amd64-emu: add ANDROID_SDK_ROOT

[ToJen]

Closing due to lack of activity.