debugging with child process

hi,

can any one help me with the 4th and 5th steps of the following link which
is to debug with a child process in postgres.

*https://wiki.postgresql.org/wiki/Working_with_Eclipse#Debugging_with_child_processes
<https://wiki.postgresql.org/wiki/Working_with_Eclipse#Debugging_with_child_processes&gt;*

when I give the following fields in the debug configuration

*c/c++ Application : postgres*
*Project - psql*
*Build Configuration - Use Active*

I am getting the following error- * No source available for
"__kernel_vsyscall() at 0xb726a424" *

Is there any better tool other than eclipse to use for editing or knowing
about source code in postgres.

Thank you