ubuntu spdlog 日志安装及使用

1.安装方法

  1.命令行安装
       sudo apt install libspdlog-dev
  2.源码安装
       git clone https://github.com/gabime/spdlog.git
       cd spdlog && mkdir build && cd build
       cmake .. && make -j && sudo make install

2.代码示例

#include 

#include 
#include 
#include 

using namespace std;

int main()
{
    cout << "Hello World!" << endl;

    //打印到终端
    auto console = spdlog::stdout_color_mt("console");
    //打印到日志文件中
    auto max_size = 1024*1024*5; //单个日志文件大小
    auto max_files = 3;          //最多存几个日志文件
    auto logger = spdlog::rotating_logger_mt("spdlog_use", "logs/rotating.txt", max_size, max_files);

    spdlog::set_default_logger(logger);
    spdlog::set_level(spdlog::level::info);
    spdlog::set_pattern("[%Y-%m-%d %H:%M:%S.%e] [%g:%#] [%n:%l] %v");

    spdlog::info("Welcom to spdlog!");

    //打印变量
    SPDLOG_LOGGER_INFO(console, "Support for floats {}", "hello world");
    SPDLOG_LOGGER_INFO(logger, "Support for floats {}", "hello world");
    //打印数据
    SPDLOG_LOGGER_INFO(console, "Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
    SPDLOG_LOGGER_INFO(logger, "Support for int: {0:d};  hex: {0:x};  oct: {0:o}; bin: {0:b}", 42);
    //打印浮点数
    SPDLOG_LOGGER_INFO(console, "Support for floats {:03.2f}", 1.23456);
    SPDLOG_LOGGER_INFO(logger, "Support for floats {:03.2f}", 1.23456);
    //打印多个变量
    SPDLOG_LOGGER_WARN(console, "Support for floats {1} {0}", "world", "hello");
    SPDLOG_LOGGER_WARN(logger, "Support for floats {1} {0}", "world", "hello");
    //补位
    SPDLOG_LOGGER_ERROR(console, "{:08d}", 12);
    SPDLOG_LOGGER_ERROR(logger, "{:08d}", 12);

    spdlog::drop("console");
    spdlog::drop("logger");
    spdlog::shutdown();

    return 0;
}

编译： g++ main.cpp -lspdlog

运行效果图：

 日志内容：