cc -O2 -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations stdlib/secure_getenv.c -o stdlib/secure_getenv -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lintl -lcrypt
stdlib/secure_getenv.c:5:30: error: 'secure_getenv' undeclared here (not in a function)
    5 | char *(*foo)(const char *) = secure_getenv;
      |                              ^~~~~~~~~~~~~