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POUnable to attach ndk-gdb to android process
 

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  1. POUnable to attach ndk-gdb to android process
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    <p>I have two processes in the Android application- main application process and a remote service process. The native libraries are loaded from the remote service process.</p> <p>I want to debug the native library code. The application is debuggable. The native library was built from Windows command-line using ndk-build. In Android.mk, -g -ggdb flag was used for this library. I am running ndk-gdb from cygwin.</p> <p>Test device: Galaxy Nexus running Android 4.2.2</p> <p>Error line: error while loading shared libraries: ?: cannot open shared object file: No such file or directory</p> <p>In the verbose information, I see that gdbserver is trying to attach to process id of the main application process. Should it matter that the library is loaded from a remote process within this application.</p> <p>Detailed ndk-gdb run information- $ ndk-gdb --verbose --force<br> Android NDK installation path: /cygdrive/c/work/android/ndk/android-ndk-r9-windows-x86/android-ndk-r9<br> Using default adb command: /cygdrive/c/work/android/sdk/android-sdk_r10-windows/android-sdk-windows/platform-tools/adb<br> ADB version found: Android Debug Bridge version 1.0.31<br> Using ADB flags:<br> Using JDB command: /cygdrive/c/program files (x86)/java/jdk1.6.0_25/bin/jdb<br> Using auto-detected project path: .<br> Found package name: [application-pkg-name]<br> ABIs targetted by application: armeabi<br> Device API Level: 17<br> Device CPU ABIs: armeabi-v7a armeabi<br> Compatible device ABI: armeabi<br> Using gdb setup init: ./libs/armeabi/gdb.setup<br> Using toolchain prefix: /cygdrive/c/work/android/ndk/android-ndk-r9-windows-x86/android-ndk-r9/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-<br> Using app out directory: ./obj/local/armeabi<br> Found debuggable flag: true<br> Found device gdbserver: /data/data/[applcation-pkg-name]/lib/gdbserver<br> Found data directory: '/data/data/[applcation-pkg-name]'<br> Found running PID: 17890<br> Launched gdbserver succesfully.<br> Setup network redirection<br> ## COMMAND: adb_cmd shell run-as [applcation-pkg-name] lib/gdbserver +debug-socket --attach 17890<br> ## COMMAND: adb_cmd forward tcp:5039 localfilesystem:/data/data/[applcation-pkg-name]/debug-socket Attached; pid = 17890 [Comment: This pid is for the main application process]<br> Listening on Unix socket debug-socket<br> ## COMMAND: adb_cmd pull /system/bin/app_process obj/local/armeabi/app_process<br> 493 KB/s (9592 bytes in 0.019s)<br> Pulled app_process from device/emulator.<br> ## COMMAND: adb_cmd pull /system/bin/linker obj/local/armeabi/linker<br> 1165 KB/s (63244 bytes in 0.053s)<br> Pulled linker from device/emulator.<br> ## COMMAND: adb_cmd pull /system/lib/libc.so obj/local/armeabi/libc.so<br> 2442 KB/s (297608 bytes in 0.119s)<br> Pulled libc.so from device/emulator.<br> /cygdrive/c/work/android/ndk/android-ndk-r9-windows-x86/android-ndk-r9/toolchains/arm-linux-androideabi-4.6/prebuilt/windows/bin/arm-linux-androideabi-gdb.exe: error while loading shared libraries: ?: cannot open shared object file: No such file or directory </p> <p>Couple of side notes that could be helpful-<br> 1) If I run the ndk-gdb command without --force, it gives me error that Another debug session is running. Although the gdb prompt came out during the last run. 2) On Android 4.3, with the same application and setup, I get error that "Could not extract package's data directory"</p>
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    1. COIs this related: http://stackoverflow.com/questions/17219906/run-as-package-a-b-c-is-unknown-galaxy-s4-jellybean-or-android-4-3
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