本人正在写毕设，使用贵工作室提供的广工大的学位论文模板https://www.latexstudio.net/archives/1791.html 在下好文件刚开始试编译的时候就遇到报错了，值得一提的是，报错的地方不是tex文件而是cls文件： ``` ! Undefined control sequence. l.53 \newfontfamily \heiti@num{SimHei}[AutoFakeBold=1] ? h The control sequence at the end of the top line of your error message was never \def'ed. If you have misspelled it (e.g., `\hobx'), type `I' and the correct spelling (e.g., `I\hbox'). Otherwise just continue, and I'll forget about whatever was undefined. ``` 对应这个报错的部分是cls中的字体设置函数（共3个）： ```tex \newfontfamily\heiti@num{SimHei}[AutoFakeBold=1] \newfontfamily\heiti@num@bold{SimHei}[AutoFakeBold=2] \setCJKfamilyfont{heiti@bold}{SimHei}[AutoFakeBold=2] ``` 刚开始我以为是没有加 \usepackage{fontspec}，后面加进去后又报了这个错： ```tex !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! Fatal fontspec error: "cannot-use-pdftex" ! ! The fontspec package requires either XeTeX or LuaTeX. ! ! You must change your typesetting engine to, e.g., "xelatex" or ! "lualatex"instead of "latex" or "pdflatex". ! ! See the fontspec documentation for further information. ! ! For immediate help type H . !............................................... l.44 \msg_fatal:nn {fontspec} {cannot-use-pdftex} ``` 至此就卡壳了不知道怎么解决，求各位大佬相助，谢谢！ cls文件的MWE（不太懂cls哪些代码比较必要所以不太会缩减，先说声抱歉）： ```tex \NeedsTeXFormat{LaTeX2e}[1999/12/01] \ProvidesPackage{gdutart} [2019/04/01 v1.0 Template for GDUT] \RequirePackage{xkeyval} \RequirePackage{etoolbox} \newif\ifcoverpage \coverpagetrue \DeclareOptionX{nocoverpage}{\coverpagefalse} \ifcoverpage% \define@key{GDUT}{subject}[]{\gdef\GDUT@info@subject{#1}}% \define@key{GDUT}{topic}[]{\gdef\GDUT@info@topic{#1}}% \define@key{GDUT}{college}[]{\gdef\GDUT@info@college{#1}}% \define@key{GDUT}{major}[]{\gdef\GDUT@info@major{#1}}% \define@key{GDUT}{grade}[]{\gdef\GDUT@info@grade{#1}}% \define@key{GDUT}{stuid}[]{\gdef\GDUT@info@stuid{#1}}% \define@key{GDUT}{name}[]{\gdef\GDUT@info@name{#1}}% \define@key{GDUT}{teacher}[]{\gdef\GDUT@info@teacher{#1}}% \setkeys{GDUT}{% subject = 本科毕业设计（论文）, topic = 请填写课题名称, college = 请填写学院, major = 请填写专业, grade = 请填写年级, stuid = 请填写学号, name = 请填写姓名, teacher = 请填写指导老师% } \newcommand{\infosetup}[1]{\setkeys{GDUT}{#1}}% \fi \ProcessOptionsX\relax \LoadClass[a4paper, 12pt, notitlepage]{ctexart} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% 引用的宏包 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \RequirePackage{geometry} % 设置页边距 \RequirePackage{fancyhdr} % 设置页眉和页脚 \RequirePackage{amsthm, amsfonts, amsmath, bm} % 数学环境 \RequirePackage{makecell, multirow, xltabular} % 扩展表格 \RequirePackage{enumitem} % 定制列表环境 \RequirePackage{graphicx} % 插入图片 \RequirePackage{titlesec} % 定制章节格式 \RequirePackage{tocloft} % 定制目录格式 \RequirePackage{hyperref} % 使用超链接 \usepackage{fontspec} %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% 字体设置 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \newfontfamily\heiti@num{SimHei}[AutoFakeBold=1] \newfontfamily\heiti@num@bold{SimHei}[AutoFakeBold=2] \setCJKfamilyfont{heiti@bold}{SimHei}[AutoFakeBold=2] ```