Hi I ran into this issue myself: man pthread_rwlock_init results in "No manual entry for pthread_rwlock_init" but man pthread_rwlock_destroy details both functions (which is not apparent at all)
This is a) hard to track down (having installed all the required packages and searched for many hours I quickly became aware of it) and b) hinders development quite a lot. I couldn't not have figured this out without the help from #debian on Freenode but not many people have the possibility to bug people in real-time. Please add the symlinks! Emil
