Controls whether debug information is generated for all source symbols, or only for those source symbols actually used.
--remove_unneeded_entities to reduce the amount of debug information
in an ELF object. Faster linkage times can also be achieved.
--remove_unneeded_entities can help to reduce the amount of
debug information generated per file, it has the disadvantage of reducing the number of
debug sections that are common to many files. This reduces the number of common debug
sections that the linker is able to remove at final link time, and can result in a final
debug image that is larger than necessary. For this reason, use
--remove_unneeded_entities only when necessary.
The effects of these options are restricted to debug information.
The default is