executing external native build for ndkBuild Affected Modules: core

[jhwsx]

Describe the bug
executing external native build for ndkBuild /home/wzc/op/shadowsocks-android/core/src/main/jni/Android.mk
Affected Modules: core

To Reproduce
When I compile the project, it can always reproduce.

Expected behavior
Compile pass.

Screenshots

Smartphone (please complete the following information):
No device, I cannot compile it ok, let alone install it.

Configuration
I don't know about the configuration.

Additional context
OS system: Ubuntu 18.0.4
AndroidStudio version: 4.0 beta 3
gradle: 4.0.0-beta03 and 6.1.1

In fact, I just clone the master branch and work on it.

The only place I modified is：
change this line:

classpath 'com.android.tools.build:gradle:4.0.0-alpha09'

to this line:

classpath 'com.android.tools.build:gradle:4.0.0-beta03'

I wonder whether this modification really matters.
And I want to compile pass.

[kusty456]

Describe the bug
,>

To Reproduce
When I compile the project, it can always reproduce.

Compile pass.

Screenshots
!](https://user-images.github.com/

**Smartphone
.

Configuration

**Additional
system: Ubuntu
AndroidStudio
gradle:

In fact, I the master branch and work on it.

The only place I modified is：
change this line:

'com.android.tools'

to this line:

[jhwsx]

Why is this an invalid question?
If you need more information, I can give more details; If this is a problem which has had an answer, please reference it.
I'm not here to issue an invalid question, I am looking for an answer which makes me struggling for days.

[ghost]

I am having the same problem, I followed the actions in the documentation, why should I close this issue? If there is an answer please send me a link