Missed a few places where Mock Link had references on Release builds.

qgroundcontrol.pro

@@ -188,7 +188,6 @@ FORMS += \
     src/QGCQmlWidgetHolder.ui \
     src/ui/MainWindow.ui \
     src/ui/MAVLinkSettingsWidget.ui \
-    src/ui/MockLinkConfiguration.ui \
     src/ui/QGCCommConfiguration.ui \
     src/ui/QGCLinkConfiguration.ui \
     src/ui/QGCMapRCToParamDialog.ui \
@@ -199,6 +198,11 @@ FORMS += \
     src/ui/uas/QGCUnconnectedInfoWidget.ui \
     src/ui/uas/UASMessageView.ui \
 
+DebugBuild {
+FORMS += \
+    src/ui/MockLinkConfiguration.ui \
+}
+
 !iOSBuild {
 FORMS += \
     src/ui/SerialSettings.ui \
@@ -231,9 +235,6 @@ HEADERS += \
     src/comm/LinkInterface.h \
     src/comm/LinkManager.h \
     src/comm/MAVLinkProtocol.h \
-    src/comm/MockLink.h \
-    src/comm/MockLinkFileServer.h \
-    src/comm/MockLinkMissionItemHandler.h \
     src/comm/ProtocolInterface.h \
     src/comm/QGCMAVLink.h \
     src/comm/TCPLink.h \
@@ -278,7 +279,6 @@ HEADERS += \
     src/ui/MainWindow.h \
     src/ui/MAVLinkDecoder.h \
     src/ui/MAVLinkSettingsWidget.h \
-    src/ui/MockLinkConfiguration.h \
     src/ui/QGCCommConfiguration.h \
     src/ui/QGCLinkConfiguration.h \
     src/ui/QGCMapRCToParamDialog.h \
@@ -292,6 +292,14 @@ HEADERS += \
     src/AutoPilotPlugins/PX4/PX4AirframeLoader.h \
     src/QmlControls/QGCImageProvider.h \
 
+DebugBuild {
+HEADERS += \
+    src/comm/MockLink.h \
+    src/comm/MockLinkFileServer.h \
+    src/comm/MockLinkMissionItemHandler.h \
+    src/ui/MockLinkConfiguration.h \
+}
+
 WindowsBuild {
     PRECOMPILED_HEADER += src/stable_headers.h
     HEADERS += src/stable_headers.h
@@ -349,9 +357,6 @@ SOURCES += \
     src/comm/LinkConfiguration.cc \
     src/comm/LinkManager.cc \
     src/comm/MAVLinkProtocol.cc \
-    src/comm/MockLink.cc \
-    src/comm/MockLinkFileServer.cc \
-    src/comm/MockLinkMissionItemHandler.cc \
     src/comm/TCPLink.cc \
     src/comm/UDPLink.cc \
     src/FlightDisplay/FlightDisplayViewController.cc \
@@ -390,7 +395,6 @@ SOURCES += \
     src/ui/MainWindow.cc \
     src/ui/MAVLinkDecoder.cc \
     src/ui/MAVLinkSettingsWidget.cc \
-    src/ui/MockLinkConfiguration.cc \
     src/ui/QGCCommConfiguration.cc \
     src/ui/QGCLinkConfiguration.cc \
     src/ui/QGCMapRCToParamDialog.cpp \
@@ -404,6 +408,14 @@ SOURCES += \
     src/AutoPilotPlugins/PX4/PX4AirframeLoader.cc \
     src/QmlControls/QGCImageProvider.cc \
 
+DebugBuild {
+SOURCES += \
+    src/comm/MockLink.cc \
+    src/comm/MockLinkFileServer.cc \
+    src/comm/MockLinkMissionItemHandler.cc \
+    src/ui/MockLinkConfiguration.cc \
+}
+
 !iOSBuild {
 SOURCES += \
     src/comm/QGCSerialPortInfo.cc \

src/FactSystem/FactSystemTestBase.cc

@@ -26,7 +26,9 @@
 
 #include "FactSystemTestBase.h"
 #include "LinkManager.h"
+#ifdef QT_DEBUG
 #include "MockLink.h"
+#endif
 #include "MultiVehicleManager.h"
 #include "QGCApplication.h"
 #include "QGCMessageBox.h"

src/ui/QGCCommConfiguration.cc

@@ -36,7 +36,9 @@ This file is part of the QGROUNDCONTROL project
 #endif
 #include "QGCUDPLinkConfiguration.h"
 #include "QGCTCPLinkConfiguration.h"
+#ifdef QT_DEBUG
 #include "MockLinkConfiguration.h"
+#endif
 #ifndef __mobile__
 #include "LogReplayLinkConfigurationWidget.h"
 #endif