@@ -1305,6 +1305,16 @@ Specify that the dynamic loader should modify its symbol search order
so that symbols in this shared library interpose all other shared
libraries not so marked.
+@item unique
+@itemx nounique
+When generating a shared library or other dynamically loadable ELF
+object mark it as one that should (by default) only ever be loaded once,
+and only in the main namespace (when using @code{dlmopen}). This is
+primarily used to mark fundamental libraries such as libc, libpthread et
+al which do not usually function correctly unless they are the sole instances
+of themselves. This behaviour can be overridden by the @code{dlmopen} caller
+and does not apply to certain loading mechanisms (such as audit libraries).
+
@item lazy
When generating an executable or shared library, mark it to tell the
dynamic linker to defer function call resolution to the point when
@@ -1925,6 +1925,10 @@ elf_shlib_list_options (FILE *file)
fprintf (file, _("\
-z interpose Mark object to interpose all DSOs but executable\n"));
fprintf (file, _("\
+ -z unique Mark DSO to be loaded at most once by default, and only in the main namespace\n"));
+ fprintf (file, _("\
+ -z nounique Don't mark DSO as a loadable at most once\n"));
+ fprintf (file, _("\
-z lazy Mark object lazy runtime binding (default)\n"));
fprintf (file, _("\
-z loadfltr Mark object requiring immediate process\n"));