x86_64-managarm-gcc -pthread  -Wall -Wextra cnd_broadcast.c -o cnd_broadcast -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv
cnd_broadcast.c: In function ‘start’:
cnd_broadcast.c:46:27: error: implicit declaration of function ‘cnd_signal’ [-Wimplicit-function-declaration]
   46 |                 int ret = cnd_signal(&cnd_sync);
      |                           ^~~~~~~~~~