cc -pthread   -Wall -Wextra -Werror=implicit-function-declaration stdlib/setkey.c -o stdlib/setkey -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt  -lgdbm_compat -lcrypt -latomic
stdlib/setkey.c: In function ‘main’:
stdlib/setkey.c:12:9: error: implicit declaration of function ‘setkey’ [-Werror=implicit-function-declaration]
   12 |         setkey(key);
      |         ^~~~~~
cc1: some warnings being treated as errors