cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations stdlib/mkdtemp.c -o stdlib/mkdtemp -D_POSIX_C_SOURCE=202405L  -lm -lpthread  -liconv
stdlib/mkdtemp.c:5:24: error: use of undeclared identifier 'mkdtemp'
    5 | char *(*foo)(char *) = mkdtemp;
      |                        ^
1 error generated.