可以从cmake启动 conan install，这对于最终用户，包使用者（而不是自己创建包）很方便。
    这是正在测试中的工作。 请尝试并提供反馈或贡献。 执行此任务的CMake代码在这里：https://github.com/conan-io/cmake-conan
    为了能够使用它，您可以直接从CMake脚本下载代码：

    CMakeLists.txt

    1. cmake_minimum_required(VERSION 2.8)
    2. project(myproject CXX)
    4. # Download automatically, you can also just copy the conan.cmake file
    5. if(NOT EXISTS "${CMAKE_BINARY_DIR}/conan.cmake")
    6.    message(STATUS "Downloading conan.cmake from https://github.com/conan-io/cmake-conan")
    7.    file(DOWNLOAD "https://raw.githubusercontent.com/conan-io/cmake-conan/master/conan.cmake"
    8.                   "${CMAKE_BINARY_DIR}/conan.cmake")
    9. endif()
    11. include(${CMAKE_BINARY_DIR}/conan.cmake)
    13. conan_cmake_run(REQUIRES Catch2/2.6.0@catchorg/stable
    14.                 BASIC_SETUP)
    16. add_executable(main main.cpp)
    17. target_link_libraries(main ${CONAN_LIBS})

    如果要使用目标，可以执行以下操作：

    1. include(conan.cmake)
    2. conan_cmake_run(REQUIRES Catch2/2.6.0@catchorg/stable
    3.                 BASIC_SETUP CMAKE_TARGETS)
    5. add_executable(main main.cpp)
    6. target_link_libraries(main CONAN_PKG::hello)