Attaching the gdb debugger to your C++

[cesine]

[cesine]

Prequisites: add the C++ facet and build config following this tutorial
http://mhandroid.wordpress.com/2011/01/23/using-eclipse-for-android-cc-development/

Debugging: if those instructions dont work try http://wiki.eclipse.org/CDT/User/FAQ

make -f ${NDK_ROOT}/build/core/build-local.mk

and add these to your C++ paths and symbols

${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/darwin-x86/lib/gcc/arm-linux-androideabi/4.4.3/include-fixed
${NDK_ROOT}/toolchains/arm-linux-androideabi-4.4.3/prebuilt/darwin-x86/lib/gcc/arm-linux-androideabi/4.4.3/include

Debugging: if you get "semantic errors" that can't find c_str or std::string, you can turn those errors into warnings by going into the C/C++ General and Code Analysis preferences for the project.

[cesine]

Step 1: put android:debuggable="true" in your Manifest in the application tag

 < application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:debuggable="true"> 

Step 2: add a flag in your Android.mk

  LOCAL_CFLAGS := -g 

Step 3: create a debug configuration
http://mhandroid.wordpress.com/2011/01/23/using-eclipse-for-android-cc-debugging/

Step 3.1: restart eclipse

Step 4: Put a break point in your java after the CPP libary has been loaded, start your Java debug configuration

Step 5: Run ndk-gdb on the commandline

ndk-gdb-eclipse --start --force --verbose 

Step 6: Put your breakpoints where you want them in your C++ and start your C++ debug configuration

Step 7: Step merrily your way through the C++

---

Step 2debugging: make sure the ndk is not striping out the debug info

$ cd wherever/your/project/root/is
 $  ndk-build NDK_DEBUG=1 V=1 |grep strip

If it says strip-debug, then follow this tutorial http://vilimpoc.org/blog/2010/09/23/hello-gdbserver-a-debuggable-jni-example-for-android/
References:

• http://wiki.eclipse.org/CDT/User/FAQ
• http://vilimpoc.org/blog/2010/09/23/hello-gdbserver-a-debuggable-jni-example-for-android/
• http://mhandroid.wordpress.com/2011/01/23/using-eclipse-for-android-cc-debugging/
• http://mhandroid.wordpress.com/2011/01/25/how-cc-debugging-works-on-android/

[grassick]

Cool! That will be really helpful...