OS X will give you the following regarding prebinding from the Terminal window by typing:
- man update_prebinding
update_prebinding tries to synchronize prebinding information for li- braries and executables when new files are added to a system. Prebinding information is pre-calculated address information for libraries used by a given executable or library. By pre-determining where a function in an- other library is destined to be placed, the dynamic linker does not have to resolve symbols at application startup time, and the application can launch faster.
Because each recompilation of a library or executable may place functions at different addresses, a newly installed library or executableis pre- binding information might not match the libraries already on the disk. When the dynamic linker determines determines that prebinding information
update_prebinding ensures that prebinding information is up-to-date after new prebound applications or new versions of system libraries are in- stalled. Given a list of the newly installed files in a package, up- date_prebinding finds all the libraries and executables that may dynami- cally load the changed files. If so, the prebinding information must be updated, and update_prebinding performs redo_prebinding to update that file. update_prebinding builds a dependency graph to minimize the files that must be updated, and applies a few other heuristics to only call redo_prebinding when necessary.