cc -pthread  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations pthread/pthread_spinlock_t.c -o pthread/pthread_spinlock_t -D_POSIX_C_SOURCE=202405L  -lm -lpthread  -liconv
pthread/pthread_spinlock_t.c:2:1: error: unknown type name 'pthread_spinlock_t'; did you mean 'pthread_rwlock_t'?
    2 | pthread_spinlock_t* foo;
      | ^~~~~~~~~~~~~~~~~~
      | pthread_rwlock_t
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/sys/_pthread/_pthread_rwlock_t.h:31:35: note: 'pthread_rwlock_t' declared here
   31 | typedef __darwin_pthread_rwlock_t pthread_rwlock_t;
      |                                   ^
1 error generated.