cc -pthread -Wall -Wextra -Werror=implicit-function-declaration stdlib/initstate.c -o stdlib/initstate -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv stdlib/initstate.c: In function ‘main’: stdlib/initstate.c:12:27: error: implicit declaration of function ‘initstate’ [-Wimplicit-function-declaration] 12 | char* old_state = initstate(1337, state, 256); | ^~~~~~~~~ stdlib/initstate.c:12:27: error: initialization of ‘char *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]