PTHREAD_THREADS_MAX is supposed to be in pthread-specific dir, but for now it lives in bits/uClibc_local_lim.h

libc/sysdeps/linux/common/bits/local_lim.h

@@ -63,8 +63,6 @@
 
 /* The number of threads per process.  */
 #define _POSIX_THREAD_THREADS_MAX	64
-/* This is the value this implementation supports.  */
-#define PTHREAD_THREADS_MAX	16384
 
 /* Maximum amount by which a process can descrease its asynchronous I/O
    priority level.  */