Get core dumps from motion

* Set core dump path

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

sysctl -p 

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
  

* Run gdb