if test "$have_pthreads" = "yes"
 then
     save_LIBS="$LIBS"
     LIBS="$THREAD_LIBS $LIBS"
     AC_CHECK_FUNCS([sched_yield pthread_yield])
     LIBS="$save_LIBS"
     AC_DEFINE([BUILD_CLAMD], 1, "build clamd")
     dnl define these here, so we don't forget any system
     AC_DEFINE([CL_THREAD_SAFE],1,[thread safe])
     AC_DEFINE([_REENTRANT],1,[thread safe])
 fi