1. Debug JNI code with ndk-gdb and eclipse GUI Tom Chen
2. Overview Prerequisite Debug with ndk-gdb Set up eclipse gdb
environment Debug JNI in eclipse
3. Prerequisite Build Debuggable JNI Lib Download
android-ndk-r9 In AndroidManifest.xml android:debuggable=true In
Application.mk, APP_OPTIM := debug. Without this variable is also
fine. Just don't let it be "release". Build Code: ndk-build
NDK_DEBUG=1
4. Prerequisite Cygwin Environment Download and install cygwin
Remember to install make(2.7 or higher) Install JDK and set up env
variables, PATH and CLASSPATH Without JDK is also fine, but have to
run ndk-gdb with "--nowait". Set up path to android-sdk and ndk in
PATH env variables. For unix-like env, just set up these relative
paths.
5. Debug with ndk-gdb Steps First, run your debuggle app
directly or via eclipse. Open cygwin and go to where your project
resides. Execute ndk-gdb With --nowait specified if no JDK
installed. Set up some break points and start debugging!
6. Debug with ndk-gdb Basic gdb commands break (br or b): Setup
break points info br: Show all break points bt: Display call stack
list: Show next ten lines of code print (p): Print the content of
variable continue (c): Continue the process. step (s): Step to next
line
7. Set up eclipse gdb CDT plugin is required! Create C/C++
debug configuration.
9. Set up eclipse gdb Modify scripts ndk-gdb Make a copy and
rename it as ndk-gdb-eclipse Edit the new file and comment out the
last line #$GDBCLIENT -x `native_path $GDBSETUP` gdb.setup The file
located at objlocalarmeabigdb.setup . Make a copy named gdb2.setup
Delete the last line target remote :5039
10. Debug JNI in eclipse First, run your debuggle app directly
or via eclipse Open cygwin and go to where your project resides.
Execute ndk-gdb-eclipse With --nowait specified if no JDK
installed. Wait until the command finish Go back to eclipse and
execute the debug configuration just created!
