introduce functions to detect build features

.gitignore

@@ -23,6 +23,12 @@ build_*/
 !build/darknet/YoloWrapper.cs
 .fuse*
 *.weights
+build/*.cmake
+build/*.ninja
+build/*.txt
+build/*.json
+build/CMakeFiles/
+build/detect_cuda_compute_capabilities.cu
 
 # OS Generated #
 .DS_Store*

include/yolo_v2_class.hpp

@@ -62,6 +62,9 @@ extern "C" LIB_API int detect_mat(const uint8_t* data, const size_t data_length,
 extern "C" LIB_API int dispose();
 extern "C" LIB_API int get_device_count();
 extern "C" LIB_API int get_device_name(int gpu, char* deviceName);
+extern "C" LIB_API bool built_with_cuda();
+extern "C" LIB_API bool built_with_cudnn();
+extern "C" LIB_API bool built_with_opencv();
 extern "C" LIB_API void send_json_custom(char const* send_buf, int port, int timeout);
 
 class Detector {

src/yolo_v2_class.cpp

@@ -72,6 +72,31 @@ int get_device_count() {
 #endif	// GPU
 }
 
+bool built_with_cuda(){
+#ifdef GPU
+    return true;
+#else
+    return false;
+#endif
+}
+
+bool built_with_cudnn(){
+#ifdef CUDNN
+    return true;
+#else
+    return false;
+#endif
+}
+
+bool built_with_opencv(){
+#ifdef OPENCV
+    return true;
+#else
+    return false;
+#endif
+}
+
+
 int get_device_name(int gpu, char* deviceName) {
 #ifdef GPU
     cudaDeviceProp prop;