Gentoo Problems in Gentoo ebuilds are more subtle, but more widespread. The official ebuilds enable a compile-time option that we (Ardour developers) explicitly note as being unsupported. There is no good solution here, but a middle ground is to use the Pro Audio Overlay 2.999 ebuild with DISABLED(USE=-syslibs). We’d be happy if Gentoo users pointed this out to the ebuild maintainers.
http://ardour.org/node/2543
