diff -aur uperf-1.0.4/configure uperf-1.0.4_lpthread/configure
--- uperf-1.0.4/configure	2011-08-24 07:03:14.000000000 -0700
+++ uperf-1.0.4_lpthread/configure	2015-06-18 00:35:43.651395774 -0700
@@ -1763,7 +1763,7 @@
 
 CFLAGS="${CFLAGS=}"
 UPERF_LIBS="${UPERF_LIBS=}"
-#UPERF_LIBS="$UPERF_LIBS -lpthread -lrt -lm"
+UPERF_LIBS="$UPERF_LIBS -lpthread -lrt -lm"
 
 # Checks for programs.
 am__api_version='1.10'