http://www.scoberlin.de/content/media/http/informatik/gcc_docs/ld_3.html
https://ftp.gnu.org/old-gnu/Manuals/ld-2.9.1/html_mono/ld.html#TOC6
ld
-X
--discard-locals
Delete all temporary local symbols. For most targets, this is all local symbols whose names begin with `L'.