Carp-trace is a project mainly written in Perl, it's free.
This is the README file for Carp::Trace, a perl module for simple caller tracing.
Please refer to 'perldoc Carp::Trace' after installation for details.
Carp::Trace follows the standard perl module install process
perl Makefile.PL make make test make install
The module uses no C or XS parts, so no c-compiler is required.