ExtUtils::XSBuilder is a set of modules to parse C header files and create XS glue code and documentation from it. . Ideally this allows you to "write" an interface to a C library without coding a line. Although this module automates much of the process, you must still be familiar with C and XS programming since no C API is ideal and usually some adjuments are necessary. When the C API changes, most of the time you only have to rerun XSBuilder to get your new Perl API.