diff --git a/Emgu.CV.Extern/depthai/depthai_c.cpp b/Emgu.CV.Extern/depthai/depthai_c.cpp
index 4de0c66b4e..25cd6768b3 100644
--- a/Emgu.CV.Extern/depthai/depthai_c.cpp
+++ b/Emgu.CV.Extern/depthai/depthai_c.cpp
@@ -8,84 +8,133 @@
 
 Device* depthaiDeviceCreate(cv::String* usb_device, bool usb2_mode)
 {
+#ifdef HAVE_DEPTHAI
 	return new Device(*usb_device, usb2_mode);
+#else
+	throw_no_depthai();
+#endif
 }
 void depthaiDeviceRelease(Device** usb_device)
 {
+#ifdef HAVE_DEPTHAI
 	delete* usb_device;
 	*usb_device = 0;
+#else
+	throw_no_depthai();
+#endif
 }
 
 void depthaiDeviceGetAvailableStreams(Device* usb_device, std::vector< cv::String >* availableStreams)
 {
+#ifdef HAVE_DEPTHAI
 	std::vector< std::string > as = usb_device->get_available_streams();
 	availableStreams->clear();
 	for (std::vector< std::string >::iterator it = as.begin(); it != as.end(); ++it)
 	{
 		//cv::String s(*it);
 		availableStreams->push_back( *it );
-	}	
+	}
+#else
+	throw_no_depthai();
+#endif
 }
 
 CNNHostPipeline* depthaiDeviceCreatePipeline(Device* usb_device, cv::String* config_json_str, std::shared_ptr<CNNHostPipeline>** hostedPipelinePtr)
 {
+#ifdef HAVE_DEPTHAI
  	std::shared_ptr<CNNHostPipeline> ptr = usb_device->create_pipeline(*config_json_str);
 	*hostedPipelinePtr = new std::shared_ptr<CNNHostPipeline>(ptr);
 	return (*hostedPipelinePtr)->get();
+#else
+	throw_no_depthai();
+#endif
 }
 
 void depthaiCNNHostPipelineRelease(std::shared_ptr<CNNHostPipeline>** hostedPipelinePtr)
 {
+#ifdef HAVE_DEPTHAI
 	delete* hostedPipelinePtr;
 	hostedPipelinePtr = 0;
+#else
+	throw_no_depthai();
+#endif
 }
 
 NNetAndDataPackets* depthaiCNNHostPipelineGetAvailableNNetAndDataPackets(CNNHostPipeline* cnnHostPipeline, bool blocking)
 {
+#ifdef HAVE_DEPTHAI
 	return new NNetAndDataPackets(cnnHostPipeline->getAvailableNNetAndDataPackets(blocking));
+#else
+	throw_no_depthai();
+#endif
 }
 
 int depthaiNNetAndDataPacketsGetNNetCount(NNetAndDataPackets* nnetAndDataPackets)
 {
+#ifdef HAVE_DEPTHAI
 	return nnetAndDataPackets->_nnetPackets.size();
+#else
+	throw_no_depthai();
+#endif
 }
 void depthaiNNetAndDataPacketsGetNNetArr(NNetAndDataPackets* nnetAndDataPackets, NNetPacket** packetArr)
 {
+#ifdef HAVE_DEPTHAI
 	for (auto i = nnetAndDataPackets->_nnetPackets.begin(); i != nnetAndDataPackets->_nnetPackets.end(); ++i)
 	{
 		*packetArr = (*i).get();
 		packetArr++;
 	}
+#else
+	throw_no_depthai();
+#endif
 }
 int depthaiNNetAndDataPacketsGetHostDataPacketCount(NNetAndDataPackets* nnetAndDataPackets)
 {
+#ifdef HAVE_DEPTHAI
 	return nnetAndDataPackets->_hostDataPackets.size();
+#else
+	throw_no_depthai();
+#endif
 }
 void depthaiNNetAndDataPacketsGetHostDataPacketArr(NNetAndDataPackets* nnetAndDataPackets, HostDataPacket** packetArr)
 {
+#ifdef HAVE_DEPTHAI
 	for (auto i = nnetAndDataPackets->_hostDataPackets.begin(); i != nnetAndDataPackets->_hostDataPackets.end(); ++i)
 	{
 		*packetArr = (*i).get();
 		packetArr++;
 	}
+#else
+	throw_no_depthai();
+#endif
 }
 
 void depthaiNNetAndDataPacketsRelease(NNetAndDataPackets** nnetAndDataPackets)
 {
+#ifdef HAVE_DEPTHAI
 	delete* nnetAndDataPackets;
 	*nnetAndDataPackets = 0;
+#else
+	throw_no_depthai();
+#endif
 }
 
 void depthaiHostDataPacketGetDimensions(HostDataPacket* packet, std::vector< int >* dimensions)
 {
+#ifdef HAVE_DEPTHAI
 	dimensions->clear();
 	for (auto i = packet->dimensions.begin(); i != packet->dimensions.end(); ++i)
 	{
 		dimensions->push_back(*i);
 	}
+#else
+	throw_no_depthai();
+#endif
 }
 bool depthaiHostDataPacketGetMetadata(HostDataPacket* packet, FrameMetadata* metadata)
 {
+#ifdef HAVE_DEPTHAI
 	auto meta = packet->getMetadata();
 	if (meta)
 	{
@@ -100,25 +149,37 @@ bool depthaiHostDataPacketGetMetadata(HostDataPacket* packet, FrameMetadata* met
 	{
 		return false;
 	}
+#else
+	throw_no_depthai();
+#endif
 }
 
 
 int depthaiNNetPacketGetDetectedObjectsCount(NNetPacket* packet)
 {
+#ifdef HAVE_DEPTHAI
 	auto sharedPtr = packet->getDetectedObjects();
 	return sharedPtr->detection_count;
+#else
+	throw_no_depthai();
+#endif
 }
 void depthaiNNetPacketGetDetectedObjects(NNetPacket* packet, dai::Detection* detections)
 {
+#ifdef HAVE_DEPTHAI
 	auto sharedPtr = packet->getDetectedObjects();
 	int count = sharedPtr->detection_count;
 	for (int i = 0; i < count; i++)
 	{
 		detections[i] = sharedPtr->detections[i];
 	}
+#else
+	throw_no_depthai();
+#endif
 }
 bool depthaiNNetPacketGetMetadata(NNetPacket* packet, FrameMetadata* metadata)
 {
+#ifdef HAVE_DEPTHAI
 	auto meta = packet->getMetadata();
 	if (meta)
 	{
@@ -132,15 +193,26 @@ bool depthaiNNetPacketGetMetadata(NNetPacket* packet, FrameMetadata* metadata)
 	{
 		return false;
 	}
+#else
+	throw_no_depthai();
+#endif
 }
 
 
 FrameMetadata* depthaiFrameMetadataCreate()
 {
+#ifdef HAVE_DEPTHAI
 	return new FrameMetadata();
+#else
+	throw_no_depthai();
+#endif
 }
 void depthaiFrameMetadataRelease(FrameMetadata** metadata)
 {
+#ifdef HAVE_DEPTHAI
 	delete* metadata;
 	*metadata = 0;
+#else
+	throw_no_depthai();
+#endif
 }
\ No newline at end of file
diff --git a/Emgu.CV.Extern/depthai/depthai_c.h b/Emgu.CV.Extern/depthai/depthai_c.h
index a9f21da497..2127e1dc26 100644
--- a/Emgu.CV.Extern/depthai/depthai_c.h
+++ b/Emgu.CV.Extern/depthai/depthai_c.h
@@ -14,7 +14,20 @@
 #ifdef HAVE_DEPTHAI
 #include "depthai/device.hpp"
 #else
+#include <list>
+
 static inline CV_NORETURN void throw_no_depthai() { CV_Error(cv::Error::StsBadFunc, "The library is compiled without depthai support"); }
+
+class NNetPacket {};
+class HostDataPacket {};
+class Device {};
+class CNNHostPipeline {};
+class FrameMetadata {};
+
+namespace dai
+{
+	class Detection {};
+}
 #endif
 
 class NNetAndDataPackets