cc -pthread  -Wall -Wextra -Werror=implicit-function-declaration stdlib/at_quick_exit.c -o stdlib/at_quick_exit -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lnetwork -lbsd -latomic
stdlib/at_quick_exit.c: In function 'main':
stdlib/at_quick_exit.c:14:14: error: implicit declaration of function 'at_quick_exit' [-Werror=implicit-function-declaration]
   14 |         if ( at_quick_exit(handler) )
      |              ^~~~~~~~~~~~~
stdlib/at_quick_exit.c:16:9: error: implicit declaration of function 'quick_exit' [-Werror=implicit-function-declaration]
   16 |         quick_exit(1);
      |         ^~~~~~~~~~
cc1: some warnings being treated as errors