Get core dumps from motion

* Set core dump path

echo "kernel/core_pattern = /tmp/core.%e.%p" >> /etc/sysctl.conf  

sysctl -p 

or

echo "/tmp/core.%e.%p" > /proc/sys/kernel/core_pattern 
 

* Enable core dump

ulimit -c unlimited

* Compile motion

./configure --without-optimizecpu --with-developer-flags
sed -ie 's/-O2//g' Makefile
make 

* run motion

./motion -n -d 9
  

and on segfault you will get a core dump in /tmp as in example /tmp/core.motion.24915

* Run gdb

gdb ./motion /tmp/core.motion.24915

bt full

frame 1

-- AngelCarpintero - 23 Jun 2008