Cmake之ExternalProject_Add

素颜马尾好姑娘i 2024-03-30 14:39 75阅读 0赞

#### 一、介绍 ####

ExternalProject命令可以很好的解决项目中使用第三方库,提高项目的可用性.ExternalProject\_Add()函数创建一个外部工程可以驱动下载、更新/补丁、配置、构建、安装和测试流程的自定义目标  
语法：

ExternalProject_Add(<name> [<option>...])

#### 二、实例 ####

文件目录

![de7e127f7b0d409b8399ac37473e4952.png][]

spdlog.cmake

include(ExternalProject)
    
    set(SPDLOG_ROOT ${CMAKE_BINARY_DIR}/thirdparty/SPDLOG)
    set(SPDLOG_GIT_TAG  v1.4.1)  # 指定版本
    set(SPDLOG_GIT_URL      https://github.com/gabime/spdlog.git)  # 指定git仓库地址
    set(SPDLOG_CONFIGURE    cd ${SPDLOG_ROOT}/src/SPDLOG && cmake -D CMAKE_INSTALL_PREFIX=${SPDLOG_ROOT} .)  # 指定配置指令（注意此处修改了安装目录，否则默认情况下回安装到系统目录）
    set(SPDLOG_MAKE         cd ${SPDLOG_ROOT}/src/SPDLOG && make)  # 指定编译指令（需要覆盖默认指令，进入我们指定的SPDLOG_ROOT目录下）
    set(SPDLOG_INSTALL      cd ${SPDLOG_ROOT}/src/SPDLOG && make install)  # 指定安装指令（需要覆盖默认指令，进入我们指定的SPDLOG_ROOT目录下）
    
    ExternalProject_Add(SPDLOG
            PREFIX            ${SPDLOG_ROOT}
            GIT_REPOSITORY    ${SPDLOG_GIT_URL}
            GIT_TAG           ${SPDLOG_GIT_TAG}
            CONFIGURE_COMMAND ${SPDLOG_CONFIGURE}
            BUILD_COMMAND     ${SPDLOG_MAKE}
            INSTALL_COMMAND   ${SPDLOG_INSTALL}
    )
    
    # 指定编译好的静态库文件的路径
    set(SPDLOG_LIB       ${SPDLOG_ROOT}/lib/spdlog/libspdlog.a)
    
    # 指定头文件所在的目录
    set(SPDLOG_INCLUDE_DIR   ${SPDLOG_ROOT}/include)

CMakeList .txt

project(ImportExternalProject)
    cmake_minimum_required(VERSION 3.11)
    
    add_definitions(-std=c++11)  # 指定采用c++11进行编译（spdlog需要c++11）
    
    add_executable(test_spdlog testspdlog.cc)
    
    
    set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake;${CMAKE_MODULE_PATH}")
    
    include(spdlog)
    
    target_link_libraries(test_spdlog ${SPDLOG_LIB})
    
    target_include_directories(test_spdlog PRIVATE ${SPDLOG_INCLUDE_DIR})

testspdlog.cc

#include "spdlog/spdlog.h"
    #include "spdlog/sinks/basic_file_sink.h"
    
    int main() 
    {
        spdlog::info("Welcome to spdlog!");
        spdlog::error("Some error message with arg: {}", 1);
        
        spdlog::warn("Easy padding in numbers like {:08d}", 12);
        spdlog::critical("Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
        spdlog::info("Support for floats {:03.2f}", 1.23456);
        spdlog::info("Positional args are {1} {0}..", "too", "supported");
        spdlog::info("{:<30}", "left aligned");
        
        spdlog::set_level(spdlog::level::debug); // Set global log level to debug
        spdlog::debug("This message should be displayed..");    
        
        // change log pattern
        spdlog::set_pattern("[%H:%M:%S %z] [%n] [%^---%L---%$] [thread %t] %v");
        
        // Compile time log levels
        // define SPDLOG_ACTIVE_LEVEL to desired level
        SPDLOG_TRACE("Some trace message with param {}", 42);
        SPDLOG_DEBUG("Some debug message");
        
        // Set the default logger to file logger
        auto file_logger = spdlog::basic_logger_mt("basic_logger", "basic.txt");
        spdlog::set_default_logger(file_logger);            
    }

参考：

[ExternalProject — CMake 3.25.1 Documentation][ExternalProject _ CMake 3.25.1 Documentation]

[cmake(三十八)Cmake之ExternalProject\_Add指令\_wzj\_110的博客-CSDN博客\_externalproject\_add][cmake_Cmake_ExternalProject_Add_wzj_110_-CSDN_externalproject_add]

[https://blog.csdn.net/zym326975/article/details/106118063][https_blog.csdn.net_zym326975_article_details_106118063]

[de7e127f7b0d409b8399ac37473e4952.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/30/ed9d21e0abbb47748a8a3a2c07b6669f.png
[ExternalProject _ CMake 3.25.1 Documentation]: https://cmake.org/cmake/help/latest/module/ExternalProject.html
[cmake_Cmake_ExternalProject_Add_wzj_110_-CSDN_externalproject_add]: https://blog.csdn.net/wzj_110/article/details/116722467
[https_blog.csdn.net_zym326975_article_details_106118063]: https://blog.csdn.net/zym326975/article/details/106118063