use Alien::Libarchive to find libarchive #2
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Please consider this patch that would use Alien::Libarchive to find the libarchive instead of Devel::CheckLib. Alien::Libarchive is more reliable since it will use pkg-config (or PkgConfig.pm) if -larchive does not work. In addition if the system libarchive cannot be found it will attempt to build it from source.