Hi i have problem with android studio project, until yesterday was worked. But i think when i execute gradle update make this issue. From this moment i cant build the app because i have the followin message:

Gradle sync failed: executing external native build for cmake /Users/…/CMakeLists.txt (4 s 813 ms)

22:06 NDK Resolution Outcome: Project settings: Gradle model version=5.4.1, NDK version is UNKNOWN

And in stacktrace show:

org.gradle.api.GradleException: executing external native build for cmake /Users/mexicanobermudez/Documents/workspace_divino/mobile/app/CMakeLists.txt
at com.android.build.gradle.internal.cxx.logging.ErrorsAreFatalThreadLoggingEnvironment.close(ErrorsAreFatalThreadLoggingEnvironment.kt:50)
at com.android.build.gradle.tasks.ExternalNativeJsonGenerator.buildForOneConfigurationConvertExceptions(ExternalNativeJsonGenerator.java:164)
at com.android.build.gradle.tasks.ExternalNativeJsonGenerator.buildForOneAbiName(ExternalNativeJsonGenerator.java:208)
at com.android.build.gradle.internal.ide.NativeModelBuilder.buildNativeVariantAbi(NativeModelBuilder.kt:149)
at com.android.build.gradle.internal.ide.NativeModelBuilder.buildAll(NativeModelBuilder.kt:97)
at com.android.build.gradle.internal.ide.NativeModelBuilder.buildAll(NativeModelBuilder.kt:38)
at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$ParameterizedBuildOperationWrappingToolingModelBuilder$1$1.create(DefaultToolingModelBuilderRegistry.java:138)
at org.gradle.api.internal.project.DefaultProjectStateRegistry.withLenientState(DefaultProjectStateRegistry.java:132)
at org.gradle.tooling.provider.model.internal.DefaultToolingModelBuilderRegistry$ParameterizedBuildOperationWrappingToolingModelBuilder$1.call(DefaultToolingModelBuilderRegistry.java:134)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:416)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:406)
at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
at org.gradle.internal.operations.DefaultBuildOpera

I try download new NDK, Import again the project, Undate gradle version, and others worksarounds, but any was working.

I appresiate any colaboration.

THANKS

Try adding ndkVersion to your gradle.build file if it’s missing. For example:

android {
    compileSdkVersion PROP_COMPILE_SDK_VERSION.toInteger()
    ndkVersion "20.0.5594570"
    defaultConfig {
          
The solution(Workaround)  was founded is:
Generate a new project with the same package and name in other path, copy all classes and resources, compile to verify all build succesfull. If you have a git repository linked to the old path, copy cocos2d and project.android folder from the new to the old path(for some reason is not enough copy only project.android), then compile again old path and all is working again. I try many alternative solutions but nothing work for me.
Thank @R101 for your help.
          
I’m glad you got it sorted.  That issue happens a lot with the Android build, mainly because some files are changed by Android Studio, and eventually it breaks the build.  The only way to get it working again is to get a clean version of those files.  I just make sure that a working proj.android is always in my source control, so if it breaks, I compare the differences and revert back to the working version if required.
Also, whenever you have problems, delete these folders inside proj.android:

and these in proj.android/app/:

before trying anything else.