cc -pthread  -Wall -Wextra -Werror=implicit-function-declaration stdlib/l64a.c -o stdlib/l64a -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv
stdlib/l64a.c: In function ‘main’:
stdlib/l64a.c:10:24: error: implicit declaration of function ‘l64a’ [-Wimplicit-function-declaration]
   10 |         char* string = l64a(9854977);
      |                        ^~~~
stdlib/l64a.c:10:24: error: initialization of ‘char *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]