Cmake 编译 OpenCV 通用设置
特点：
- 包括 Contrib 模块
- 关闭了 Example、Test、OpenCV_App
- Linux、Windows 均只生成 OpenCV_World
需要注意：
- 每次把 Cmake 缓存清空，否则，Install 路径可能被设置为默认路径
- Windows 需要注意编译工具的选择，如果是MinGW，可能需要额外修改，VS的编译器则不需要。
set(BUILD_EXAMPLES OFF)
set(BUILD_PERF_TESTS OFF)
set(BUILD_TESTS OFF)
set(BUILD_opencv_apps OFF)set(BUILD_TIFF ON)
set(BUILD_ZLIB ON)
set(BUILD_JASPER ON)
set(BUILD_JPEG ON)
set(BUILD_PNG ON)set(BUILD_SHARED_LIBS ON)
set(BUILD_opencv_world ON)
set(OPENCV_EXTRA_MODULES_PATH ${CMAKE_CURRENT_LIST_DIR}/opencv_contrib-4.8.0/modules CACHE STRING "SELF DEFINED OPENCV_EXTRA_MODULES_PATH")# set install location
if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)set(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT OFF)if (UNIX)set(TARGET_PLATFORM "UNIX")elseif (WIN32)set(TARGET_PLATFORM "WIN")endif ()set(CMAKE_INSTALL_PREFIX ${CMAKE_CURRENT_LIST_DIR}/release/${TARGET_PLATFORM})
endif ()add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/opencv-4.8.0)
Find_OpenCV
if (UNIX)set(TARGET_PLATFORM "UNIX")set(OPENCV_LIB opencv_world)set(OPENCV_LIB_FOLDER ${CMAKE_CURRENT_LIST_DIR}/release/UNIX/lib)set(OPENCV_HEADER_FOLDER ${CMAKE_CURRENT_LIST_DIR}/release/UNIX/include/opencv4)elseif (WIN32)set(TARGET_PLATFORM "WIN")set(OPENCV_LIB opencv_world480)set(OPENCV_LIB_FOLDER ${CMAKE_CURRENT_LIST_DIR}/release/WIN/x64/vc17/lib)set(OPENCV_DLL_FOLDER ${CMAKE_CURRENT_LIST_DIR}/release/WIN/x64/vc17/bin)set(OPENCV_HEADER_FOLDER ${CMAKE_CURRENT_LIST_DIR}/release/WIN/include)endif ()
