Mail if there is an installation failure.
diff --git a/Misc/build.sh b/Misc/build.sh
index 94950ff..e36a88c 100755
--- a/Misc/build.sh
+++ b/Misc/build.sh
@@ -166,6 +166,7 @@
             start=`current_time`
             make install >& build/$F
             update_status "Installing" "$F" $start
+            mail_on_failure "install" build/$F
 
             if [ ! -x $PYTHON ]; then
                 ln -s ${PYTHON}2.* $PYTHON