x86_64-managarm-gcc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations sys_msg/MSG_NOERROR.c -o sys_msg/MSG_NOERROR -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
sys_msg/MSG_NOERROR.c:8:17: error: ‘MSG_NOERROR’ undeclared here (not in a function)
    8 | int const foo = MSG_NOERROR;
      |                 ^~~~~~~~~~~