gradle externalNativeBuild with both cmake and ndk-build

[Panagiotis Apostolou]

I want to use both cmake and ndk-build to build an android application.

I need cmake to run first, then ndk-build and then assemble the .apk file

To do that I have resolved by specifying only cmake in  externalNativeBuild and running ndk-build as an Exec task.

I invoke the task with:

beforeEvaluate { assembleRelease.finalizedBy { runNdkBuild } }

Unfortunately this seems that it calls the task after  the apk has been assembled so the .so files are not included. If i rerun gradlew then it updates the apk with the so files.

How can I make the task to run before assembling the apk but after cmake so that the generated binaries will be included in the apk?

[Dan Albert]

You need to make the dependency explicit. Use two gradle modules. Make the CMake one a library module, and have the ndk-build module depend on it. Alternatively set the dependency correctly on your ndk-build task, but you're fighting against AGP by doing it that way.

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[Panagiotis Apostolou]

Luckily I already have two gradle modules, one is a library one and the other is the application which depends on the first one. As you suggest I move the cmake to the library one and now it works. Thanks.