x/mobile: gomobile init failed

[guotie]

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

$ go version
1.11.5

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
set GOARCH=amd64

set GOBIN=

set GOCACHE=C:\Users\Administrator\AppData\Local\go-build

set GOEXE=.exe

set GOFLAGS=

set GOHOSTARCH=amd64

set GOHOSTOS=windows

set GOOS=windows

set GOPATH=E:\gopath

set GOPROXY=

set GORACE=

set GOROOT=E:\bin\Go

set GOTMPDIR=

set GOTOOLDIR=E:\bin\Go\pkg\tool\windows_amd64

set GCCGO=gccgo

set CC=gcc

set CXX=g++

set CGO_ENABLED=1

set GOMOD=

set CGO_CFLAGS=-g -O2

set CGO_CPPFLAGS=

set CGO_CXXFLAGS=-g -O2

set CGO_FFLAGS=-g -O2

set CGO_LDFLAGS=-g -O2

set PKG_CONFIG=pkg-config

set GOGCCFLAGS=-m64 -mthreads -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=C:\Users\ADMINI~1\AppData\Local\Temp\go-build144258234=/tmp/go-build -gno-record-gcc-switches

What did you do?

Use gomobile init -ndk my-ndk-path, it failed:

# gomobile init -ndk=C:\Users\Administrator\AppData\Local\Android\Sdk\ndk-bundle
gomobile: C:\Users\Administrator\AppData\Local\Android\Sdk\ndk-bundle\prebuilt\windows-x86_64\bin\python2.7 build/tools/make_standalone_toolchain.py --arch=arm --api=15 --install-dir=E:\gopath\pkg\gomobile\ndk-toolchains\arm failed: exit status 1
WARNING:__main__:make_standalone_toolchain.py is no longer necessary. The
%NDK%\toolchains\llvm\prebuilt\windows-x86_64\bin directory contains target-specific scripts that perform
the same task. For example, instead of:

    C:\>python %NDK%\build\tools\make_standalone_toolchain.py \
        --arch arm --api 15 --install-dir toolchain
    C:\>toolchain\bin\clang++ src.cpp

Instead use:

    C:\>%NDK%\toolchains\llvm\prebuilt\windows-x86_64\bin\armv7a-linux-androideabi15-clang++ src.cpp

15 is less than minimum platform for arm (16)

[odeke-em]

Thank you for reporting this issue @guotie!

Unfortunately I still don't get what the issue is. Is it that your version of the Android API (of 15) isn't supported yet we claim to support at least 15?

Kindly paging @eliasnaur @hyangah

[eliasnaur]

Please update your gomobile tools:

go get -u golang.org/x/mobile/cmd/...

Gomobile init hasn't been necessary for a while now.

[guotie]

yes, gomobile init does not ecessary.