HAVE_PTHREAD_H     35 include/ruby/thread_native.h #elif defined(HAVE_PTHREAD_H)
HAVE_PTHREAD_H    713 signal.c       #if HAVE_PTHREAD_H
HAVE_PTHREAD_H    288 thread.c       #elif defined(HAVE_PTHREAD_H)
HAVE_PTHREAD_H     70 vm_core.h      #elif defined(HAVE_PTHREAD_H)