CentOS 7 使用Fmt库-编程知识

CentOS 7 使用Fmt库

安装

fmt Git下载地址：https://github.com/fmtlib/fmt

步骤1：首先，你需要下载fmt的源代码。你可以从https://github.com/fmtlib/fmt或者源代码官方网站下载。并上传至/usr/local/source_code/

步骤2：下载完成后，需要将源代码解压，可以使用以下命令：

 tar -zxvf fmt-10.0.0.tar.gz

步骤3：解压后，切换到源代码目录：

[root@localhost source_code]# cd fmt-10.0.0

步骤4：生成fmt 动态/静态库，执行如下指令：

mkdir build
cd build
cmake ..
make && make install

[root@localhost fmt-10.0.0]# mkdir build
[root@localhost fmt-10.0.0]# cd build/
[root@localhost build]# cmake ..
-- CMake version: 3.21.2
-- The CXX compiler identification is GNU 8.3.1
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /opt/rh/devtoolset-8/root/usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Version: 10.0.0
******
[root@localhost build]# make && make install
[  1%] Building CXX object CMakeFiles/fmt.dir/src/format.cc.o
[  2%] Building CXX object CMakeFiles/fmt.dir/src/os.cc.o
[  4%] Linking CXX static library libfmt.a
[  4%] Built target fmt
******
Install the project...
-- Install configuration: "Release"
-- Installing: /usr/local/lib64/libfmt.a
-- Installing: /usr/local/include/fmt/args.h
-- Installing: /usr/local/include/fmt/chrono.h
-- Installing: /usr/local/include/fmt/color.h
-- Installing: /usr/local/include/fmt/compile.h
-- Installing: /usr/local/include/fmt/core.h
-- Installing: /usr/local/include/fmt/format.h
-- Installing: /usr/local/include/fmt/format-inl.h
-- Installing: /usr/local/include/fmt/os.h
-- Installing: /usr/local/include/fmt/ostream.h
-- Installing: /usr/local/include/fmt/printf.h
-- Installing: /usr/local/include/fmt/ranges.h
-- Installing: /usr/local/include/fmt/std.h
-- Installing: /usr/local/include/fmt/xchar.h
-- Installing: /usr/local/lib64/cmake/fmt/fmt-config.cmake
-- Installing: /usr/local/lib64/cmake/fmt/fmt-config-version.cmake
-- Installing: /usr/local/lib64/cmake/fmt/fmt-targets.cmake
-- Installing: /usr/local/lib64/cmake/fmt/fmt-targets-release.cmake
-- Installing: /usr/local/lib64/pkgconfig/fmt.pc

温馨提示：完成以上步骤后，在/usr/local/lib64下会生成libfmt.so动态库和/usr/local/include下生成fmt文件夹。你可以使用以下命令查看是否安装成功：

ls /usr/local/lib64 | grep fmt
ls /usr/local/include | grep fmt

如果看到，则说明成功安装了fmt库 .

快速入门

在/usr/local/source_code 新增fmt_demo 目录并新增test_fmt.cpp 文件，文件内容如下：


#include "fmt/core.h"int main(){fmt::print("Hello,{}", "Fmt");return 0;
}

编译源码并执行：

[root@localhost source_code]# vi test_fmt.cpp
[root@localhost source_code]# g++ test_fmt.cpp -o test_fmt  -lfmt
[root@localhost source_code]# ./test_fmt
Hello,Fmt