官术网_书友最值得收藏!

Generating a CMake script file

Before we start creating our source file, we are going to generate the CMakeLists.txt file to allow us to compile our project, structure it, and execute it. The following CMake script is simple and basic but enough to compile and generate the executable:

cmake_minimum_required (VERSION 3.0)

PROJECT(Chapter4_Phototool)

set (CMAKE_CXX_STANDARD 11)

# Requires OpenCV
FIND_PACKAGE( OpenCV 4.0.0 REQUIRED )
MESSAGE("OpenCV version : ${OpenCV_VERSION}")

include_directories(${OpenCV_INCLUDE_DIRS})
link_directories(${OpenCV_LIB_DIR})

ADD_EXECUTABLE(${PROJECT_NAME} main.cpp)
TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${OpenCV_LIBS})

The first line indicates the minimum CMake version required to generate our project, the second one sets the project name that we can use as the ${PROJECT_NAME} variable, and the third one sets the required C++ version; in our case, we require the C++11 version, as we can see in the next snippet:

cmake_minimum_required (VERSION 3.0)

PROJECT(Chapter4_Phototool)

set (CMAKE_CXX_STANDARD 11)

Moreover, we require the OpenCV library. First, we need to find the library, and then we'll show a message on the OpenCV library version found with the MESSAGE function:

# Requires OpenCV 
FIND_PACKAGE( OpenCV 4.0.0 REQUIRED ) 
MESSAGE("OpenCV version : ${OpenCV_VERSION}") 

If the library, with a minimum version of 4.0, is found, then we include the headers and library files in our project:

include_directories(${OpenCV_INCLUDE_DIRS}) 
link_directories(${OpenCV_LIB_DIR})

Now, we only need to add the source files to compile and link with the OpenCV library. The project name variable is used as the executable name, and we use only a single source file, called main.cpp:

ADD_EXECUTABLE(${PROJECT_NAME} main.cpp) 
TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${OpenCV_LIBS})
主站蜘蛛池模板: 高安市| 滁州市| 南澳县| 乐亭县| 滦南县| 喀喇沁旗| 县级市| 南丹县| 林西县| 塔河县| 右玉县| 丹东市| 赤峰市| 江源县| 义马市| 双辽市| 克什克腾旗| 贺兰县| 德江县| 利川市| 原阳县| 牡丹江市| 忻城县| 唐海县| 崇阳县| 普陀区| 隆子县| 漳州市| 疏附县| 石首市| 沙湾县| 偃师市| 府谷县| 浦江县| 昭苏县| 玉山县| 湘西| 德江县| 报价| 临猗县| 鸡东县|