cc -O2 -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations strings/ffsl.c -o strings/ffsl -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt  -lintl -lcrypt
strings/ffsl.c:11:20: error: 'ffsl' undeclared here (not in a function); did you mean 'ffs'?
   11 | int (*foo)(long) = ffsl;
      |                    ^~~~
      |                    ffs