cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations signal/SI_MESGQ.c -o signal/SI_MESGQ -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
signal/SI_MESGQ.c:2:17: error: ‘SI_MESGQ’ undeclared here (not in a function); did you mean ‘SI_MSGQ’?
    2 | int const foo = SI_MESGQ;
      |                 ^~~~~~~~
      |                 SI_MSGQ