After I download the zip file and unzip it, I want to run the project. However, when I compile it with mingw make command, I came across this error:

File not found - .hpp
File not found - *.hpp
File not found - *.hpp
File not found - *.hpp
File not found - *.hpp
The syntax of the command is incorrect.
makefile:31: recipe for targe 'example_apps/connectedcomponents' failed
make: ** [example_apps/connectedcomponents] Error 1

How can I fix this?