While introspection is pulled in already. The USE_GNOME=introspection sets a enviroment variable to prevent introspection from generating the /root/.cache directory. Index: graphics/entangle/Makefile =================================================================== --- graphics/entangle/Makefile (revision 339601) +++ graphics/entangle/Makefile (working copy) @@ -19,7 +19,7 @@ USES= gmake pkgconfig GNU_CONFIGURE= yes -USE_GNOME= gtk30 +USE_GNOME= gtk30 introspection:build # XXX: it would be nice if one day this option would be passed automatically # to configure scripts that support it :)