cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations signal/SA_NOCLDWAIT.c -o signal/SA_NOCLDWAIT -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lcrypt -latomic
signal/SA_NOCLDWAIT.c:8:17: error: ‘SA_NOCLDWAIT’ undeclared here (not in a function); did you mean ‘SA_NOCLDSTOP’?
    8 | int const foo = SA_NOCLDWAIT;
      |                 ^~~~~~~~~~~~
      |                 SA_NOCLDSTOP