Build command failed about facedetection HOT 3 OPEN

更换低版本，测试成功：
Android Gradle Plugin:3.5.4
Gradle vesion:5.4.1
Compile Sdk Version:28
Build Tools Version:28.0.3
NDK Version:21.1.6352462

from facedetection.

您好 请问这是什么原因啊 报错信息这是 Caused by: Build command failed. Error while executing process C:\Users\87945\AppData\Local\Android\Sdk\cmake\3.6.4111459\bin\cmake.exe with arguments {--build F:\pyapplication\app.cxx\cmake\debug\armeabi-v7a --target native-lib}

ninja: error: '../../../../src/main/cpp/opencv/libs/armeabi-v7a/libopencv_java3.so', needed by '../../../../build/intermediates/cmake/debug/obj/armeabi-v7a/libnative-lib.so', missing and no known rule to make it

at com.android.build.gradle.internal.cxx.process.ProcessOutputJunction.execute(ProcessOutputJunction.kt:79)
at com.android.build.gradle.internal.cxx.process.ProcessOutputJunction.execute(ProcessOutputJunction.kt:120)
at com.android.build.gradle.tasks.ExternalNativeBuildTask.executeProcessBatch(ExternalNativeBuildTask.java:471)
at com.android.build.gradle.tasks.ExternalNativeBuildTask.buildImpl(ExternalNativeBuildTask.java:207)
at com.android.build.gradle.tasks.ExternalNativeBuildTask.doTaskAction(ExternalNativeBuildTask.java:107)
at com.android.build.gradle.internal.tasks.NonIncrementalTask$taskAction$$inlined$recordTaskAction$1.invoke(AndroidVariantTask.kt:51)
at com.android.build.gradle.internal.tasks.NonIncrementalTask$taskAction$$inlined$recordTaskAction$1.invoke(AndroidVariantTask.kt:31)
at com.android.build.gradle.internal.tasks.Blocks.recordSpan(Blocks.java:91)
at com.android.build.gradle.internal.tasks.NonIncrementalTask.taskAction(NonIncrementalTask.kt:34)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:103)
... 91 more

Dear Sir

i fork this project & modify it

you can check it

or waiting PR

THX

from facedetection.

更换低版本，测试成功： Android Gradle Plugin:3.5.4 Gradle vesion:5.4.1 Compile Sdk Version:28 Build Tools Version:28.0.3 NDK Version:21.1.6352462

Dear Sir

i fork this project & modify it

you can check it

or waiting PR

THX

from facedetection.