--- stk-4.4.4.orig/configure.ac	2012-08-24 13:34:54.000000000 -0400
+++ stk-4.4.4/configure.ac	2013-01-25 10:23:41.514107691 -0500
@@ -132,6 +132,7 @@
       AC_CHECK_LIB(asound, snd_pcm_open, , AC_MSG_ERROR(ALSA support requires the asound library!))
     fi
 
+    AC_CHECK_LIB(pthread, pthread_create, , AC_MSG_ERROR(RtAudio requires the pthread library!))
     ;;
 
     *-apple*)