diff --git a/jenkins/cloudbees_build b/jenkins/cloudbees_build
index d71adbb..21cefd0 100644
--- a/jenkins/cloudbees_build
+++ b/jenkins/cloudbees_build
@@ -15,6 +15,7 @@
 DEFAULT_BASE=3.14.12.5
 
 BASE=${1:-${DEFAULT_BASE}}
+USE_MB=${2:-"MB_NO"}
 
 ###########################################
 # Fetch and unpack dependencies
@@ -26,12 +27,15 @@ mkdir -p ${STUFF}
 cd ${STUFF}
 
 wget -nv https://openepics.ci.cloudbees.com/job/Base-${BASE}_Build/lastSuccessfulBuild/artifact/base-${BASE}.CB-dist.tar.gz
-wget -nv https://openepics.ci.cloudbees.com/job/pvCommonCPP_Build/BASE=${BASE}/lastSuccessfulBuild/artifact/pvCommon.CB-dist.tar.gz
 wget -nv https://openepics.ci.cloudbees.com/job/pvDataCPP_Build/BASE=${BASE}/lastSuccessfulBuild/artifact/pvData.CB-dist.tar.gz
 tar -xzf base-${BASE}.CB-dist.tar.gz
-tar -xzf pvCommon.CB-dist.tar.gz
 tar -xzf pvData.CB-dist.tar.gz
 
+if [ "${USE_MB}" = "MB_YES" ]; then
+    wget -nv https://openepics.ci.cloudbees.com/job/pvCommonCPP_Build/BASE=${BASE}/lastSuccessfulBuild/artifact/pvCommon.CB-dist.tar.gz
+    tar -xzf pvCommon.CB-dist.tar.gz
+fi
+
 ###########################################
 # Build
 
@@ -46,6 +50,13 @@ cat > configure/RELEASE.local << EOF
 EPICS_BASE=${EPICS_BASE}
 EOF
 
+if [ "${USE_MB}" = "MB_YES" ]; then
+	# must use TAB characters here
+	cat > configure/CONFIG_SITE.local <<- EOF
+	WITH_MICROBENCH=1
+	EOF
+fi
+
 make distclean all
 
 ###########################################