diff --git a/src/concurrency/PosixNotifiedWorkerThread.cpp b/src/concurrency/PosixNotifiedWorkerThread.cpp
new file mode 100644
index 00000000..ac24cf86
--- /dev/null
+++ b/src/concurrency/PosixNotifiedWorkerThread.cpp
@@ -0,0 +1,14 @@
+#include "PosixNotifiedWorkerThread.h"
+#include <Utility.h>
+
+using namespace concurrency;
+
+/**
+ * Notify this thread so it can run
+ */
+void PosixNotifiedWorkerThread::notify(uint32_t v, eNotifyAction action) NOT_IMPLEMENTED("notify");
+
+/**
+ * A method that should block execution - either waiting ona queue/mutex or a "task notification"
+ */
+void PosixNotifiedWorkerThread::block() NOT_IMPLEMENTED("block");
\ No newline at end of file
diff --git a/src/graphics/Screen.cpp b/src/graphics/Screen.cpp
index 3cf3e93f..f9ad490d 100644
--- a/src/graphics/Screen.cpp
+++ b/src/graphics/Screen.cpp
@@ -31,6 +31,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "graphics/images.h"
 #include "main.h"
 #include "mesh-pb-constants.h"
+#include "target_specific.h"
 #include "utils.h"
 
 using namespace meshtastic; /** @todo remove */
diff --git a/src/main.cpp b/src/main.cpp
index 9a057c0b..aaea60a6 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -38,6 +38,7 @@
 #include "graphics/Screen.h"
 #include "main.h"
 #include "sleep.h"
+#include "target_specific.h"
 #include <OneButton.h>
 #include <Wire.h>
 // #include <driver/rtc_io.h>
diff --git a/src/main.h b/src/main.h
index fb64d9ff..74ad0b44 100644
--- a/src/main.h
+++ b/src/main.h
@@ -21,6 +21,6 @@ extern graphics::Screen screen;
 // Return a human readable string of the form "Meshtastic_ab13"
 const char *getDeviceName();
 
-void getMacAddr(uint8_t *dmac);
+
 
 void nrf52Setup(), esp32Setup(), nrf52Loop(), esp32Loop();
\ No newline at end of file
diff --git a/src/portduino/PortduinoGlue.cpp b/src/portduino/PortduinoGlue.cpp
new file mode 100644
index 00000000..8ef3263f
--- /dev/null
+++ b/src/portduino/PortduinoGlue.cpp
@@ -0,0 +1,20 @@
+#include "CryptoEngine.h"
+#include "target_specific.h"
+#include <Utility.h>
+
+// FIXME - move getMacAddr/setBluetoothEnable into a HALPlatform class
+
+void getMacAddr(uint8_t *dmac)
+{
+    notImplemented("getMacAddr");
+}
+
+void setBluetoothEnable(bool on)
+{
+    notImplemented("setBluetoothEnable");
+}
+
+// FIXME - implement real crypto for linux
+CryptoEngine *crypto = new CryptoEngine();
+
+void updateBatteryLevel(uint8_t level) NOT_IMPLEMENTED("updateBatteryLevel");
\ No newline at end of file
diff --git a/src/target_specific.h b/src/target_specific.h
index 6acca364..1e79df51 100644
--- a/src/target_specific.h
+++ b/src/target_specific.h
@@ -1,6 +1,10 @@
 #pragma once
 
+#include <Arduino.h>
+
 // Functions that are unique to particular target types (esp32, bare, nrf52 etc...)
 
 // Enable/disable bluetooth.
-void setBluetoothEnable(bool on);
\ No newline at end of file
+void setBluetoothEnable(bool on);
+
+void getMacAddr(uint8_t *dmac);
\ No newline at end of file