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C++命令行解析开源库cxxopts上手教程

前提：
Ubuntu-26.04
cmake
git

cxxopts github

gitclone https://github.com/jarro2783/cxxopts.git

cdcxxopts cmake.-Bbuild-GNinja-DCMAKE_INSTALL_PREFIX=/home/xl/xl_projects/helloworld/third_libs/cxxopts cmake--bui