diff --git a/.gitignore b/.gitignore
index e7e76877..d38743a7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,6 +19,7 @@
 .DS_Store
 test_results.csv
 _build*
+**/.venv/**
 
 # waf build files
 .lock-waf_*
diff --git a/Brewfile b/Brewfile
new file mode 100644
index 00000000..2fd6d0b8
--- /dev/null
+++ b/Brewfile
@@ -0,0 +1,7 @@
+tap 'homebrew/core'
+
+brew 'perl'
+brew 'cpanm'
+
+brew 'python@2'
+brew 'pipenv'
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index a5b83a91..232e19a7 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -15,11 +15,11 @@ lib_xua Change Log
   * RESOLVED:  wChannelConfig in UAC1 descriptor set according to output channel
     count
   * RESOLVED:  Indexing of ADAT channel strings (#18059)
-  * RESOLVED:  Rebooting device fails when PLL config "not reset" bit is set 
+  * RESOLVED:  Rebooting device fails when PLL config "not reset" bit is set
 
   * Changes to dependencies:
 
-    - lib_spdif: Added dependency 3.0.0
+    - lib_spdif: Added dependency 3.1.0
 
     - lib_xassert: Added dependency 3.0.1
 
@@ -95,7 +95,7 @@ Legacy release history
 
 7.3.0
 -----
-    - CHANGE:     Example OSX DFU host app updated to now take PID as runtime 
+    - CHANGE:     Example OSX DFU host app updated to now take PID as runtime
       argument. This enabled multiple XMOS devices to be attached to the host
       during DFU process
 
diff --git a/Jenkinsfile b/Jenkinsfile
index f2e9dbad..5e404793 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,61 +1,141 @@
-@Library('xmos_jenkins_shared_library@master') _
+@Library('xmos_jenkins_shared_library@develop') _
+
+getApproval()
+
 pipeline {
-  agent {
-    label 'x86&&macOS&&Apps'
-  }
+  agent none
   environment {
-    VIEW = 'xua'
     REPO = 'lib_xua'
+    VIEW = "${env.JOB_NAME.contains('PR-') ? REPO+'_'+env.CHANGE_TARGET : REPO+'_'+env.BRANCH_NAME}"
+  }
+  triggers {
+    /* Trigger this Pipeline on changes to the repos dependencies
+     *
+     * If this Pipeline is running in a pull request, the triggers are set
+     * on the base branch the PR is set to merge in to.
+     *
+     * Otherwise the triggers are set on the branch of a matching name to the
+     * one this Pipeline is on.
+     */
+    upstream(
+      upstreamProjects:
+        (env.JOB_NAME.contains('PR-') ?
+          "../lib_device_control/${env.CHANGE_TARGET}," +
+          "../lib_dsp/${env.CHANGE_TARGET}," +
+          "../lib_i2c/${env.CHANGE_TARGET}," +
+          "../lib_logging/${env.CHANGE_TARGET}," +
+          "../lib_mic_array/${env.CHANGE_TARGET}," +
+          "../lib_spdif/${env.CHANGE_TARGET}," +
+          "../lib_xassert/${env.CHANGE_TARGET}," +
+          "../lib_xud/${env.CHANGE_TARGET}," +
+          "../tools_released/${env.CHANGE_TARGET}," +
+          "../tools_xmostest/${env.CHANGE_TARGET}," +
+          "../xdoc_released/${env.CHANGE_TARGET}"
+        :
+          "../lib_device_control/${env.BRANCH_NAME}," +
+          "../lib_dsp/${env.BRANCH_NAME}," +
+          "../lib_i2c/${env.BRANCH_NAME}," +
+          "../lib_logging/${env.BRANCH_NAME}," +
+          "../lib_mic_array/${env.BRANCH_NAME}," +
+          "../lib_spdif/${env.BRANCH_NAME}," +
+          "../lib_xassert/${env.BRANCH_NAME}," +
+          "../lib_xud/${env.BRANCH_NAME}," +
+          "../tools_released/${env.BRANCH_NAME}," +
+          "../tools_xmostest/${env.BRANCH_NAME}," +
+          "../xdoc_released/${env.BRANCH_NAME}"),
+      threshold: hudson.model.Result.SUCCESS
+    )
   }
   options {
     skipDefaultCheckout()
   }
   stages {
-    stage('Get view') {
-      steps {
-        prepareAppsSandbox("${VIEW}", "${REPO}")
+    stage('Basic tests') {
+      agent {
+        label 'x86_64&&brew'
       }
-    }
-    stage('Library checks') {
-      steps {
-        xcoreLibraryChecks("${REPO}")
-      }
-    }
-    stage('Tests') {
-      steps {
-        runXmostest("${REPO}", 'tests')
-      }
-    }
-    stage('Host builds') {
-      steps {
-        dir("${REPO}") {
-          dir("${REPO}") {
-            dir('host') {
-              dir('xmosdfu') {
-                sh 'make -f Makefile.OSX64'
+      stages {
+        stage('Get view') {
+          steps {
+            xcorePrepareSandbox("${VIEW}", "${REPO}")
+          }
+        }
+        stage('Library checks') {
+          steps {
+            xcoreLibraryChecks("${REPO}")
+          }
+        }
+        stage('Tests') {
+          steps {
+            runXmostest("${REPO}", 'tests')
+          }
+        }
+        stage('xCORE builds') {
+          steps {
+            dir("${REPO}") {
+              xcoreAllAppNotesBuild('examples')
+              dir("${REPO}") {
+                runXdoc('doc')
               }
             }
           }
         }
       }
+      post {
+        cleanup {
+          xcoreCleanSandbox()
+        }
+      }
     }
-    stage('xCORE builds') {
-      steps {
-        dir("${REPO}") {
-          xcoreAllAppNotesBuild('examples')
-          dir("${REPO}") {
-            runXdoc('doc')
+    stage('Build host apps') {
+      failFast true
+      parallel {
+        stage('Build Linux host app') {
+          agent {
+            label 'x86_64&&brew&&linux'
+          }
+          steps {
+            xcorePrepareSandbox("${VIEW}", "${REPO}")
+            dir("${REPO}/${REPO}/host/xmosdfu") {
+              sh 'make -f Makefile.Linux64'
+            }
+          }
+          post {
+            cleanup {
+              xcoreCleanSandbox()
+            }
+          }
+        }
+        stage('Build Mac host app') {
+          agent {
+            label 'x86_64&&brew&&macOS'
+          }
+          steps {
+            xcorePrepareSandbox("${VIEW}", "${REPO}")
+            dir("${REPO}/${REPO}/host/xmosdfu") {
+              sh 'make -f Makefile.OSX64'
+            }
+          }
+          post {
+            cleanup {
+              xcoreCleanSandbox()
+            }
           }
         }
       }
     }
-  }
-  post {
-    success {
-      updateViewfiles()
-    }
-    cleanup {
-      cleanWs()
+    stage('Update') {
+      agent {
+        label 'x86_64&&brew'
+      }
+      steps {
+        updateViewfiles()
+      }
+      post {
+        cleanup {
+          cleanWs()
+        }
+      }
     }
   }
 }
diff --git a/Pipfile b/Pipfile
new file mode 100644
index 00000000..6d52bfd2
--- /dev/null
+++ b/Pipfile
@@ -0,0 +1,7 @@
+[[source]]
+name = "pypi"
+url = "https://pypi.org/simple"
+verify_ssl = true
+
+[dev-packages]
+flake8 = "*"
diff --git a/cpanfile b/cpanfile
new file mode 100644
index 00000000..071f5e6a
--- /dev/null
+++ b/cpanfile
@@ -0,0 +1,2 @@
+requires 'File::Copy::Recursive';
+requires 'LWP::Simple'
diff --git a/lib_xua/src/core/endpoint0/xua_ep0_descriptors.h b/lib_xua/src/core/endpoint0/xua_ep0_descriptors.h
index 0a84d4ee..4c85c56c 100644
--- a/lib_xua/src/core/endpoint0/xua_ep0_descriptors.h
+++ b/lib_xua/src/core/endpoint0/xua_ep0_descriptors.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011-2018, XMOS Ltd, All rights reserved
+// Copyright (c) 2011-2019, XMOS Ltd, All rights reserved
 /**
  * @file    xua_ep0_descriptors.h
  * @brief   Device Descriptors