cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations string/memmem.c -o string/memmem -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
string/memmem.c:5:60: error: ‘memmem’ undeclared here (not in a function); did you mean ‘memset’?
    5 | void *(*foo)(const void *, size_t, const void *, size_t) = memmem;
      |                                                            ^~~~~~
      |                                                            memset