Error:Execution failed for task ':app:ndkBuild'.

[Narendra Kumar]

Hi,

I am developing application for human detection using NDK and Open CV in android.

I have followed this Youtube link.

Getting error like this: 

Error:Execution failed for task ':app:ndkBuild'.

> A problem occurred starting process 'command '/home/android/Android/Sdk/ndk-bundle/ndk-build.cmd''

Could you please help me.I have searched in google but no luck.

[Ryan Prichard]

I have followed this Youtube link.

I think that video is recommending using a deprecated method of integrating Gradle with ndk-build.

The newer integration method is described here: http://tools.android.com/tech-docs/new-build-system/gradle-experimental/migrate-to-stable

If you want to keep using ndk-build, you could add something like this in your app module's build.gradle file (https://github.com/googlesamples/android-ndk/blob/81c680b572b95cb67636b9fea008c85e92e70516/hello-jni/app/build.gradle#L16-L20):

    externalNativeBuild {
        ndkBuild {
            path 'src/main/cpp/Android.mk'
        }
    }

Regarding the error:

Error:Execution failed for task ':app:ndkBuild'.
> A problem occurred starting process 'command '/home/android/Android/Sdk/ndk-bundle/ndk-build.cmd''

ndk-build.cmd is the Windows batch file that runs make.exe for ndk-build, but /home/android looks like a Linux path.

If you've copied a project from a Windows machine to a Linux one, then you'd want to run ndk-build, not ndk-build.cmd.

-Ryan

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