Grabbed existing progam off github and repaired it

src/C++/OpenCV/CMakeLists.txt

@@ -1,9 +1,44 @@
-cmake_minimum_required(VERSION 2.8)
-project( main )
+cmake_minimum_required( VERSION 3.6 )
+
+# Require C++11 (or later)
+set( CMAKE_CXX_STANDARD 23 )
+set( CMAKE_CXX_STANDARD_REQUIRED ON )
+set( CMAKE_CXX_EXTENSIONS OFF )
+set(BUILD_MODE Debug)
+# Create Project
+project( Sample )
+add_executable( YOLOv4 util.h main.cpp )
+
+# Set StartUp Project
+set_property( DIRECTORY PROPERTY VS_STARTUP_PROJECT "YOLOv4" )
+
+# Find Package
+# OpenCV
 find_package( OpenCV REQUIRED )
-include_directories( ${OpenCV_INCLUDE_DIRS} )
-add_executable( main main.cpp )
-target_link_libraries( main ${OpenCV_LIBS} )
+
+if( OpenCV_FOUND )
+  # Additional Include Directories
+  include_directories( ${OpenCV_INCLUDE_DIRS} )
+
+  # Additional Dependencies
+  target_link_libraries( YOLOv4 ${OpenCV_LIBS} )
+endif()
+
+# Download Model
+set( MODEL https://github.com/AlexeyAB/darknet/releases/download/darknet_yolo_v3_optimal/yolov4.weights )
+file( DOWNLOAD 
+  "${MODEL}"
+  "${CMAKE_CURRENT_LIST_DIR}/yolov4.weights"
+  EXPECTED_HASH SHA256=e8a4f6c62188738d86dc6898d82724ec0964d0eb9d2ae0f0a9d53d65d108d562
+  SHOW_PROGRESS
+)
 
 
-#sauce: https://docs.opencv.org/4.x/db/df5/tutorial_linux_gcc_cmake.html
+# Download Config
+set( CONFIG https://raw.githubusercontent.com/AlexeyAB/darknet/master/cfg/yolov4.cfg )
+file( DOWNLOAD 
+  "${CONFIG}"
+  "${CMAKE_CURRENT_LIST_DIR}/yolov4.cfg"
+  EXPECTED_HASH SHA256=a6d0f8e5c62cc8378384f75a8159b95fa2964d4162e33351b00ac82e0fc46a34
+  SHOW_PROGRESS
+)