调试Android NDK本机应用程序

Question

我正在尝试调试并逐步执行段错误的Android应用程序.我试过了ndk-gdb,但运气不好.我还提到了Android NDK调试而无法调试我的应用程序.

当我尝试时ndk-gdb --start,我得到:

$ ndk-gdb --start --verbose
Android NDK installation path: /opt/android-ndk-r7
Using default adb command: /opt/android-sdk-linux/platform-tools/adb
ADB version found: Android Debug Bridge version 1.0.29
Using final ADB command: '/opt/android-sdk-linux/platform-tools/adb'
Using auto-detected project path: .
Found package name: com.example.native_plasma
ABIs targetted by application: armeabi armeabi-v7a
Device API Level: 10
Device CPU ABIs: armeabi-v7a armeabi
Compatible device ABI: armeabi-v7a
Found debuggable flag: true
Found device gdbserver: /data/data/com.example.native_plasma/lib/gdbserver
Using gdb setup init: ./libs/armeabi-v7a/gdb.setup
Using toolchain prefix: /opt/android-ndk-r7/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-
Using app out directory: ./obj/local/armeabi-v7a
Found data directory: '/data/data/com.example.native_plasma'
Found first launchable activity: android.app.NativeActivity
Launching activity: com.example.native_plasma/android.app.NativeActivity
## COMMAND: /opt/android-sdk-linux/platform-tools/adb shell am start -n com.example.native_plasma/android.app.NativeActivity
Starting: Intent { cmp=com.example.native_plasma/android.app.NativeActivity }
## COMMAND: /opt/android-sdk-linux/platform-tools/adb shell sleep 2
Found running PID: 0
ERROR: Could not extract PID of application on device/emulator.
       Weird, this probably means one of these:

         - The installed package does not match your current manifest.
         - The application process was terminated.

       Try using the --verbose option and look at its output for details.

这表明应用程序segfaulted更少,但我不知道如何在这里设置断点,因为gdb实际上从未给出提示.

我也试过这个命令:

$ ../../toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-addr2line -f -e  libs/armeabi/libnative-plasma.so 
bedb2330
??
??:0

我相信我有调试符号.

• ndk-build -B V=1 APP_OPTIM=debug
• Android.mk在jni/有LOCAL_CFLAGS := -g
• ant debug

我也是,ndk-build NDK_DEBUG=1但我仍然看到我没有调试符号的地方.

这是堆栈跟踪的图像.它没有提供更多信息:

Answer 1

NDK_DEBUG = 1并且清单设置为true时的debuggable标志是必需的.在构建应用程序时,在项目/ libs/armeabi中,应该有一个gdb.setup文件.那里有符号搜索路径,检查它是否有效.你试过这个:

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

看起来你得到一个空指针异常.

Answer 2

在最新版本的NDK和Eclipse插件中,您可以右键单击包并选择Debug as - > Android Native Application