x/mobile: build error when compiling with openal

[ghost]

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

go version go1.8.1 darwin/amd64
gomobile version +44a54e9 Wed May 24 10:27:38 2017 +0000 (android,ios); androidSDK=

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

MacOS10.12.1

What did you do?

gomobile init -ndk /Users/bluepants/Documents/adt-bundle-mac-x86_64-20131030/sdk/ndk-bundle -openal "/Users/bluepants/Downloads/openal-soft-1.18.0"

gomobile build

What did you expect to see?

SUCCESS

What did you see instead?

gomobile: the Android requires the golang.org/x/mobile/exp/audio/al, but the OpenAL libraries was not found. Please run gomobile init with the -openal flag pointing to an OpenAL source directory.

Is somewhere I did wrong?Why did I can't do it right?Please help me.

[ghost]

sorry,the go env:
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/bluepants/go"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/tf/wy4j596n6cb8g0t6njx0jx0w0000gn/T/go-build096375210=/tmp/go-build -gno-record-gcc-switches -fno-common"
CXX="clang++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"

[ghost]

PS,if I didn't run "gomobile init" with -openal flag,I will get the same error output.This stuff is just driving me crazy ...
It seems like it ignored the -openal flag??

[ghost]

Another thing. At first I built this,I got the error

golang.org/x/mobile/exp/audio/al

../../../golang.org/x/mobile/exp/audio/al/al_android.go:13:10: fatal error: 'AL/al.h' file not found
#include <AL/al.h>
^
1 error generated.

Then I added AL/ directory from what I just downloaded to exp/audio/al/,and init gomobile with openal flag pointing what I just downloaded.

I'm confused because I don't know what's the right way to deal with it

[odeke-em]

/cc @hyangah @rakyll @crawshaw. Also not a regression from Go1.8.

[gopherbot]

Change https://golang.org/cl/101136 mentions this issue: cmd/gomobile: don't ignore -openal if no NDK was found

[eliasnaur]

Please run gomobile init with the -ndk flag as well. I'll send a CL that won't silently ignore -openal if no NDK is found.