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进行最后的编译时出现了这个问题，我在帖子里看到老师的解答也没有太懂，网上也没关于这个的特殊说明，想在来询问一下。
https://www.cfd-online.com/Forums/openfoam-installation/204155-undefined-reference-yyflexlexer-yywrap.html 把系统语言改成英文，你就更加容易搜到答案了
