spdlog库安装与使用

一、通过包管理器安装

#Debian: 
sudo apt install libspdlog-dev
#Homebrew: 
brew install spdlog
#MacPorts: 
sudo port install spdlog
#FreeBSD: 
pkg install spdlog
#Fedora: 
dnf install spdlog
#Gentoo: 
emerge dev-libs/spdlog
#Arch Linux: 
pacman -S spdlog
#vcpkg: 
vcpkg install spdlog
#conan: 
spdlog/[>=1.4.1]
#conda: 
conda install -c conda-forge spdlog
#build2: 
depends: spdlog ^1.8.2

二、源码安装制定版本的库

#git clone -b v1.9.2 https://gitee.com/chenjian688/spdlog.git
git clone https://github.com/gabime/spdlog.git
cd spdlog && mkdir build && cd build
cmake .. && make -j
sudo make install

#卸载
cd build	#进入安装文件夹的build目录
sudo xargs rm < install_manifest.txt

三、使用

//直接包含头文件即可使用
#include<spdlog.h>

int main(){
    spdlog::info("Welcome to spdlog version {}.{}.{}  !", SPDLOG_VER_MAJOR, SPDLOG_VER_MINOR, SPDLOG_VER_PATCH);

    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("{:>8} aligned, {:<8} aligned", "right", "left");

    // Runtime log levels
    spdlog::set_level(spdlog::level::info); // Set global log level to info
    spdlog::debug("This message should not be displayed!");
    spdlog::set_level(spdlog::level::trace); // Set specific logger's log level
    spdlog::debug("This message should be displayed..");
    
    return 0;
}