Fix build for recent GCC#12

Open

EverythingElseWasAlreadyTaken wants to merge 2 commits intocambridgehackers:masterfrom

EverythingElseWasAlreadyTaken:fix_arch_build

Commits on Dec 19, 2024

Add missing external declaration of __add_dmpv_chglst_el_sel
EverythingElseWasAlreadyTaken
committed
Move _GNU_SOURCE hint for clone() before header includes
EverythingElseWasAlreadyTaken
committed