Buck - java.lang.UnsatisfiedLinkError: could not find "libjni.so". How to solve it?

Question

A runtime exception is thrown after the command is executed buck install --run demo_app_androidafter this tutorial and this sample demonstration

Then the following is displayed in the console:

Installing apk on emulator-5554 (null).
[-] PROCESSING BUCK FILES...FINISHED 0.0s [100%] 🐌  File removed
[-] DOWNLOADING... (0.00 B/S AVG, TOTAL: 0.00 B, 0 Artifacts)
[-] BUILDING...FINISHED 0.8s [100%] (1/1 JOBS, 1 UPDATED, 0 [0.0%] CACHE MISS)
[+] INSTALLING...2.1s
Successfully ran install apk //android:demo-app on 1 device(s)
Starting activity com.facebook.buck.demo/.App...
Successfully ran start activity on 1 device(s)

Finally, the device displays the message The Buck Demo App has stopped application was successfully installed, because I see it in the list of applications, but it does not work.

Stacktrace:

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.facebook.buck.demo, PID: 7265
    java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.facebook.buck.demo-1/base.apk"],nativeLibraryDirectories=[/data/app/com.facebook.buck.demo-1/lib/x86, /system/lib, /vendor/lib]]] couldn't find "libjni.so"
    at java.lang.Runtime.loadLibrary0(Runtime.java:972)
    at java.lang.System.loadLibrary(System.java:1530)
    at com.facebook.buck.demo.Hello.<init>(Hello.java:13)
    at com.facebook.buck.demo.App.onCreate(App.java:24)
    at android.app.Activity.performCreate(Activity.java:6662)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
    at android.app.ActivityThread.-wrap12(ActivityThread.java)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:154)
    at android.app.ActivityThread.main(ActivityThread.java:6077)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)

Product Features:

• Native Android Emulator (also running on a real device with the same result)
• API Nexus 5 API 24

My computer:

• MacBook pro mid 2012

: , ​​ buck repository,

, ?

Answer 1

github:

Android NDK ( 10e) ANDROID_NDK_REPOSITORY NDK (. buckconfig ).

, NDK ~/tmp/ndk ( ~/tmp/ndk/android-ndk-r10e), ANDROID_NDK_REPOSITORY ~/tmp/ndk.

:

$ buck kill && rm -rf buck-out
$ buck build demo_app_android