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pelya
2013-11-17 17:56:46 +02:00
parent b5f48b7889
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readme.txt
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@@ -361,10 +361,10 @@ while( SDL_PollEvent(&evt) )
Quick guide to debug native code Quick guide to debug native code
================================ ================================
The debugging of multi-threaded apps is not supported with NDK r4 or r4b, you'll need NDK r5c You need compile your app with debug enabled to be able to debug native code:
and Android 2.3 emulator or device. ./build.sh debug
To debug your application go to "project" dir and launch command To debug your application - launch it, go to "project" dir and launch command
ndk-gdb --verbose --start --force ndk-gdb
then you can run usual GDB commands, like: then you can run usual GDB commands, like:
cont - continue execution. cont - continue execution.
info threads - list all threads, there will usually be like 11 of them with thread 10 being your main thread. info threads - list all threads, there will usually be like 11 of them with thread 10 being your main thread.
@@ -395,12 +395,13 @@ I/DEBUG ( 51): #03 pc 0002ca00 /data/data/de.schwardtnet.alienbla
I/DEBUG ( 51): #04 pc 00028b6e /data/data/de.schwardtnet.alienblaster/lib/libsdl.so I/DEBUG ( 51): #04 pc 00028b6e /data/data/de.schwardtnet.alienblaster/lib/libsdl.so
I/DEBUG ( 51): #05 pc 0002d080 /data/data/de.schwardtnet.alienblaster/lib/libsdl.so I/DEBUG ( 51): #05 pc 0002d080 /data/data/de.schwardtnet.alienblaster/lib/libsdl.so
2. Go to project/bin/ndk/local/armeabi dir, find there the library mentioned in stacktrace 2. Go to project/bin/ndk/local/armeabi or armeabi-v7a dir, find there the library mentioned in stacktrace
(libsdl.so in our example), copy the address of the first line of stacktrace (0002ca00), and execute command (libsdl.so in our example), copy the address of the first line of stacktrace (0002ca00), and execute command
<your NDK path>/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-gdb libsdl.so -ex "list *0x0002ca00" -ex "list *0x00028b6e" -ex "list *0x0002d080" <your NDK path>/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gdb libsdl.so -ex "list *0x0002ca00" -ex "list *0x00028b6e" -ex "list *0x0002d080"
It will output the exact line in your source where the application crashed, and some stack trace if available. It will output the exact line in your source where the application crashed, and some stack trace if available.
You may also try to use ndk-stack script to do that for you.
If your application does not work for unknown reasons, there may be the case when it exports some symbol If your application does not work for unknown reasons, there may be the case when it exports some symbol
that clash with exports from system libraries - run checkExports.sh to check this. that clash with exports from system libraries - run checkExports.sh to check this.