Isolating a Group

The default assignment of world symbol search scope to the objects obtained by a dlopen(3DL) can be reduced to group by augmenting the mode argument with the RTLD_GROUP flag. Under this mode, any objects obtained through a dlopen(3DL) will only be allowed to look for symbols within their own group.

Using the link-editor's -B group option, you can assign the group symbol search scope to objects when they are built.

If a member of a group, having group search capability, is referenced by another group requiring world search capability, the object's search capability will become a concatenation of both group and world. This promotion of attributes will remain even if the world group reference is later removed.