Configuring an c++ OpenCV project with Cmake

Question

I consider this a fundamental step for creating projects that use OpenCV libraries so you don't need to manually include all the libraries. There is not detailed information on this topic, at least for a newbie that just wants to use OpenCV as soon as posible, so:

Which is the easiest and scalable way to create a multiplatform c++ OpenCV with Cmake?

Answer 1

First: create a folder Project containing two subfolders src and include, and a file called CMakeLists.txt.

Second: Put your cpp inside the src folder and your headers in the include folders.

Third: Your CMakeLists.txt should look like this:

cmake_minimum_required(VERSION 2.8) 
PROJECT (name)
find_package(OpenCV REQUIRED )
set( NAME_SRC
    src/main.cpp    
)

set( NAME_HEADERS
    include/header.h
)

INCLUDE_DIRECTORIES( ${CMAKE_CURRENT_SOURCE_DIR}/include )
link_directories( ${CMAKE_BINARY_DIR}/bin)
set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR}/bin)
add_executable( name ${NAME_SRC} ${NAME_HEADERS} )

target_link_libraries( sample_pcTest ${OpenCV_LIBS} )

Fourth: Open CMake GUI and select the root folder as input and create a build folder for the output. Click configure, then generate, and choose the generator (VisualStudio, Eclipse, ...)