https://github.com/raycad/hello-gdbserver

Instruct how to debug native code in Android project
https://github.com/raycad/hello-gdbserver

Last synced: 4 months ago
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Instruct how to debug native code in Android project

• Host: GitHub
• URL: https://github.com/raycad/hello-gdbserver
• Owner: raycad
• Created: 2015-06-10T05:07:46.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2015-06-10T05:09:50.000Z (over 10 years ago)
• Last Synced: 2025-01-22T18:32:32.713Z (12 months ago)
• Language: Java
• Size: 105 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
Debug native code in Android project with NDK in Eclipse

1. Install CDT from Eclipse update site.

	Help -> Install New Software -> Select Eclipse update -> Programming Language -> C/C++ Development Tools -> Next ... -> Finish

	

2. Download and extract Android NDK.

	https://developer.android.com/tools/sdk/ndk/index.html

		

3. Import your C/C++ source code to Eclipse.

4. Set Android NDK path.

	Window -> Preferences -> Android -> NDK  -> Set path to the NDK

	

5. Right click on an Android project and select Android Tools -> Add native support.

	Note that you will not be able to add native support if the project already has C/C++ nature.

6. Right click project -> Properties -> C/C++ Build then add the following line to the "Build command": 

	ndk-build NDK_DEBUG=1

	

7. Add more line to application tag of the AndroidManifest.xml file:

	android:debuggable="true"

		

8. Set breakpoint in your C/C++ code.

9. Right click on your project, select Debug As -> Android Native Application. 

KNOWN ISSUES:

- Error when debugging: Unable to detect application ABI's

To fix this, add more information to your Android.mk file, e.g:

	APP_ABI := armeabi

	APP_PLATFORM := android-15

- It is recommended to introduce delay (about 5 seconds) in the application code between loading the native code library and calling any native functions (to be debugged), e.g:

try {

	System.loadLibrary("some_native_lib.so");

} catch (UnsatisfiedLinkError e) {

	return -1;

}

// Wait for GDB init

if ((getApplicationInfo().flags & ApplicationInfo.FLAG_DEBUGGABLE) != 0) {

	try {

		Thread.sleep(5000);

        } catch (InterruptedException e) { }

}

// Start calling native functions here

// ...