x86_64-managarm-gcc -pthread  -Wall -Wextra cnd_wait.c -o cnd_wait -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv
cnd_wait.c: In function ‘start’:
cnd_wait.c:41:19: error: implicit declaration of function ‘cnd_signal’ [-Wimplicit-function-declaration]
   41 |         int ret = cnd_signal(&cnd);
      |                   ^~~~~~~~~~