NAME Devel::CallChecker - custom op checking attached to subroutines DESCRIPTION This module makes some new features of the Perl 5.14.0 C API available to XS modules running on older versions of Perl. The features are centred around the function "cv_set_call_checker", which allows XS code to attach a magical annotation to a Perl subroutine, resulting in resolvable calls to that subroutine being mutated at compile time by arbitrary C code. This module makes "cv_set_call_checker" and several supporting functions available. (It is possible to achieve the effect of "cv_set_call_checker" from XS code on much earlier Perl versions, but it is painful to achieve without the centralised facility.) This module provides the implementation of the functions at runtime (on Perls where they are not provided by the core), and also at compile time supplies the C header file which provides access to the functions. INSTALLATION perl Build.PL ./Build ./Build test ./Build install AUTHOR Andrew Main (Zefram) <firstname.lastname@example.org> COPYRIGHT Copyright (C) 2011, 2012, 2013, 2015, 2017 Andrew Main (Zefram) <email@example.com> LICENSE This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.