x86_64-managarm-gcc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations threads/mtx_trylock.c -o threads/mtx_trylock -D_POSIX_C_SOURCE=202405L -lm -lpthread -lrt -lintl -liconv
threads/mtx_trylock.c:5:23: error: ‘mtx_trylock’ undeclared here (not in a function); did you mean ‘mtx_unlock’?
    5 | int (*foo)(mtx_t *) = mtx_trylock;
      |                       ^~~~~~~~~~~
      |                       mtx_unlock