Module::Build extension for using platform libraries provided by pkg-config

 Module::Build::Using::PkgConfig is a subclass of Module::Build that provides
 some handy methods to assist the Build.PL script of XS-based module
 distributions that make use of platform libraries managed by pkg-config.
 .
 As well as supporting libraries installed on a platform-wide basis and thus
 visible to pkg-config itself, this subclass also assists with Alien::-based
 wrappers of these system libraries, allowing them to be dynamically installed
 at build time if the platform does not provide them.