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Normally, a library module is loaded only when it defines one of more
symbols that has been referenced. To force a library routine to be
loaded, one need to explicitly create a reference to a symbol defined by
that library routine. The function
designed for this purpose:
dld_linkwould cause the required library routine to be loaded.
If the call is successful,
dld_create_reference returns 0;
otherwise, it returns a non-zero error code (see section Definition of Error Codes).
The library routine loaded by this method can be unlinked by
dld_unlink_by_symbol (name). Once it has been unlinked,
the corresponding reference created by
also removed so that this routine will not be loaded in again by
subsequent linking of the library.
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