init - 初始化项目

samples/CMakeLists.example.in

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+# cmake needs this line
+cmake_minimum_required(VERSION 3.1)
+
+if(NOT DEFINED EXAMPLE_NAME)
+  message(FATAL_ERROR "Invalid build script: missing EXAMPLE_NAME")
+endif()
+if(NOT DEFINED EXAMPLE_FILE)
+  message(FATAL_ERROR "Invalid build script: missing EXAMPLE_FILE")
+endif()
+
+file(TO_CMAKE_PATH "${EXAMPLE_FILE}" EXAMPLE_FILE)
+message(STATUS "Project: ${EXAMPLE_NAME}")
+message(STATUS "File   : ${EXAMPLE_FILE}")
+
+# Define project name
+project(${EXAMPLE_NAME})
+
+# Find OpenCV, you may need to set OpenCV_DIR variable
+# to the absolute path to the directory containing OpenCVConfig.cmake file
+# via the command line or GUI
+find_package(OpenCV REQUIRED)
+
+# If the package has been found, several variables will
+# be set, you can find the full list with descriptions
+# in the OpenCVConfig.cmake file.
+# Print some message showing some of them
+message(STATUS "OpenCV library status:")
+message(STATUS "    config: ${OpenCV_DIR}")
+message(STATUS "    version: ${OpenCV_VERSION}")
+message(STATUS "    libraries: ${OpenCV_LIBS}")
+message(STATUS "    include path: ${OpenCV_INCLUDE_DIRS}")
+
+# Declare the executable target built from your sources
+add_executable(${EXAMPLE_NAME} "${EXAMPLE_FILE}")
+
+# Link your application with OpenCV libraries
+target_link_libraries(${EXAMPLE_NAME} PRIVATE ${OpenCV_LIBS})