cmake_minimum_required(VERSION 3.0) project(DBoW2) include(ExternalProject)#有時希望在編譯代碼時只編譯一些指定的源碼，可以使用cmake的option命令 #https://blog.csdn.net/whahu1989/article/details/82078563#t8 option(BUILD_DBoW2 "Build DBoW2" ON) option(BUILD_Demo "Build demo application" ON)if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build." FORCE)set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release""MinSizeRel" "RelWithDebInfo") endif()if(MSVC)add_compile_options(/W4) else()add_compile_options(-Wall -Wextra -Wpedantic) endif()#頭文件位置 set(HDRSinclude/DBoW2/BowVector.h include/DBoW2/FBrief.hinclude/DBoW2/QueryResults.h include/DBoW2/TemplatedDatabase.h include/DBoW2/FORB.hinclude/DBoW2/DBoW2.h include/DBoW2/FClass.h include/DBoW2/FeatureVector.hinclude/DBoW2/ScoringObject.h include/DBoW2/TemplatedVocabulary.h) #核心代碼位置 set(SRCS src/BowVector.cpp src/FBrief.cpp src/FORB.cppsrc/FeatureVector.cpp src/QueryResults.cpp src/ScoringObject.cpp)message("hello") message(${CMAKE_CURRENT_BINARY_DIR})set(DEPENDENCY_DIR ${CMAKE_CURRENT_BINARY_DIR}/dependencies)message(${DEPENDENCY_DIR}) set(DEPENDENCY_INSTALL_DIR ${DEPENDENCY_DIR}/install)find_package(OpenCV REQUIRED)message("-------------------opencv--------------------------") message(${OpenCV_INCLUDE_DIRS})#include_directories。該命令是用來向工程添加多個指定頭文件的搜索路徑，路徑之間用空格分隔 include_directories(${OpenCV_INCLUDE_DIRS})if(BUILD_DBoW2)## 動態庫set(LIB_SHARED "SHARED")if(WIN32)#靜態庫set(LIB_SHARED "STATIC")endif(WIN32)# add_library: 生成動態庫或靜態庫(第1個參數指定庫的名字；第2個參數決定是動態還是靜態，如果沒有就默認靜態；第3個參數指定生成庫的源文件)# PROJECT_NAME cmake 內置的關鍵字，就是工程名稱 add_library(${PROJECT_NAME} ${LIB_SHARED} ${SRCS})#target_include_directories（）的影響范圍可以自定義。如加關鍵子PRIVATE或這PUBLIC。#一般引用庫路徑使用這個命令，作為外部依賴項引入進來，target是自己項目生成的lib。#(CMake的幾種Include)https://blog.csdn.net/fb_help/article/details/81382746target_include_directories(${PROJECT_NAME} PUBLIC include/DBoW2/ include/)#target_link_libraries: 把目標文件與庫文件進行鏈接target_link_libraries(${PROJECT_NAME} ${OpenCV_LIBS})#set_target_properties: 設置最終生成的庫的名稱，還有其它功能，如設置庫的版本號等等set_target_properties(${PROJECT_NAME} PROPERTIES CXX_STANDARD 11)message("---編譯了BUILD_DBoW2的動態庫和靜態庫---") endif(BUILD_DBoW2)if(BUILD_Demo)message("---編譯了demo---")add_executable(demo demo/demo.cpp)target_link_libraries(demo ${PROJECT_NAME} ${OpenCV_LIBS})set_target_properties(demo PROPERTIES CXX_STANDARD 11)file(COPY demo/images DESTINATION ${CMAKE_BINARY_DIR}/) endif(BUILD_Demo)configure_file(src/DBoW2.cmake.in"${PROJECT_BINARY_DIR}/DBoW2Config.cmake" @ONLY)install(TARGETS ${PROJECT_NAME} DESTINATION ${CMAKE_INSTALL_PREFIX}/lib) if(BUILD_DBoW2)install(DIRECTORY include/DBoW2 DESTINATION ${CMAKE_INSTALL_PREFIX}/include) endif() install(FILES "${CMAKE_CURRENT_BINARY_DIR}/DBoW2Config.cmake"DESTINATION ${CMAKE_INSTALL_PREFIX}/include/${PROJECT_NAME}) install(FILES "${PROJECT_BINARY_DIR}/DBoW2Config.cmake" DESTINATION ${CMAKE_INSTALL_PREFIX}/lib/cmake/DBoW2/) install(DIRECTORY ${DEPENDENCY_INSTALL_DIR}/ DESTINATION ${CMAKE_INSTALL_PREFIX} OPTIONAL)

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