cc -pthread -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations stdlib/l64a.c -o stdlib/l64a -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv stdlib/l64a.c:11:22: error: ‘l64a’ undeclared here (not in a function) 11 | char *(*foo)(long) = l64a; | ^~~~