x86_64-managarm-gcc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations mqueue/mq_notify.c -o mqueue/mq_notify -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
mqueue/mq_notify.c:6:32: error: ‘struct sigevent’ declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
    6 | int (*foo)(mqd_t, const struct sigevent *) = mq_notify;
      |                                ^~~~~~~~
mqueue/mq_notify.c:6:46: error: ‘mq_notify’ undeclared here (not in a function)
    6 | int (*foo)(mqd_t, const struct sigevent *) = mq_notify;
      |                                              ^~~~~~~~~
cc1: all warnings being treated as errors