I'm trying to debug a software with gdbserver on ARM to get a backtrace of a crash. Unfortunately I get only question marks. Everywhere, I read this problem is simply related to the lack of symbols, but symbols are not stripped from my libraries.
If I try to use the file command to load the symbols in the client I get:
reading symbols from <path>/libQtWebKit.so.4.7.2...(no debugging symbols found)...done.
and then, when the crash occurs:
Program received signal SIGSEGV, Segmentation fault.
0x00000000 in ?? ()
(gdb) bt
#0 0x00000000 in ?? ()
#1 0x4bf38b88 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
My libraries are compiled in release but the symbols are actually there. With nm I can find those. Why do I only get question marks? Is this only because the libraries are compiled with optimization? Isn't it possible to debug with libraries in release mode?