||Build additional filters that are not used in any of the default xz presets. This includes delta and BCJ coders, additional match finders and SHA256 checks.
||Also allow the use of external setuid processes as file content filters (Note: this is a potential security risk)
||Enable compilation of filters
||Enables support for storing DNSSEC keys through an arbitrary non-portage PKCS#11 interface, specified through an environment variable
||Allow to filter content with scripts and programs. Experimental
||Link gsl with external cblas provided by (virtual/cblas) instead of shipped internal version
||Use external FUSE library instead of internal one. Must be disabled for unprivileged mounting to work.