我正在写博士论文，然后出现了这个错误，我不知道为什么。我认为这是一个重复的包，但谷歌建议使用，%\usepackage{fontenc}但后来我得到了错误“fontspec 包需要 XeTeX 或 LuaTeX。”我正在使用 texmaker、pdflatex 并使用 make 文件来编译我的文档。令人惊讶的是，fontspec 包以前用同样的构建选项就可以正常工作。
有人可以给我建议吗？
% ****************************************************************************************************
% 0. Set the encoding of your files. UTF-8 is the only sensible encoding nowadays. If you can't read
% äöüßáéçèê∂åëæƒÏ€ then change the encoding setting in your editor, not the line below. If your editor
% does not support utf8 use another editor!
% ****************************************************************************************************
\PassOptionsToPackage{utf8}{inputenc}
\usepackage{inputenc}
%\PassOptionsToPackage{T1}{fontenc} % T2A for cyrillics
% \usepackage{fontenc}
% ****************************************************************************************************
% 1. Configure classicthesis for your needs here, e.g., remove "drafting" below
% in order to deactivate the time-stamp on the pages
% (see ClassicThesis.pdf for more information):
% ****************************************************************************************************
\PassOptionsToPackage{
drafting=true, % print version information on the bottom of the pages
tocaligned=false, % the left column of the toc will be aligned (no indentation)
dottedtoc=false, % page numbers in ToC flushed right
eulerchapternumbers=false, % use AMS Euler for chapter font (otherwise Palatino)
linedheaders=false, % chaper headers will have line above and beneath
floatperchapter=true, % numbering per chapter for all floats (i.e., Figure 1.1)
eulermath=false, % use awesome Euler fonts for mathematical formulae (only with pdfLaTeX)
beramono=true, % toggle a nice monospaced font (w/ bold)
palatino=true, % deactivate standard font for loading another one, see the last section at the end of this file for suggestions
style=classicthesis % classicthesis, arsclassica
}{classicthesis}
% ****************************************************************************************************
% 2. Personal data and user ad-hoc commands (insert your own data here)
% ****************************************************************************************************
\newcommand{\myTitle}{A Classic Thesis Style\xspace}
\newcommand{\mySubtitle}{An Homage to The Elements of Typographic Style\xspace}
\newcommand{\myDegree}{Doktor-Ingenieur (Dr.-Ing.)\xspace}
\newcommand{\myName}{André Miede \& Ivo Pletikosić\xspace}
\newcommand{\myProf}{Put name here\xspace}
\newcommand{\myOtherProf}{Put name here\xspace}
\newcommand{\mySupervisor}{Put name here\xspace}
\newcommand{\myFaculty}{Put data here\xspace}
\newcommand{\myDepartment}{Put data here\xspace}
\newcommand{\myUni}{Put data here\xspace}
\newcommand{\myLocation}{Saarbrücken\xspace}
\newcommand{\myTime}{June 2018\xspace}
\newcommand{\myVersion}{\classicthesis}
% ********************************************************************
% Setup, finetuning, and useful commands
% ********************************************************************
\providecommand{\mLyX}{L\kern-.1667em\lower.25em\hbox{Y}\kern-.125emX\@}
\newcommand{\ie}{i.\,e.}
\newcommand{\Ie}{I.\,e.}
\newcommand{\eg}{e.\,g.}
\newcommand{\Eg}{E.\,g.}
% ****************************************************************************************************
% ****************************************************************************************************
% 3. Loading some handy packages
% ****************************************************************************************************
% ********************************************************************
% Packages with options that might require adjustments
% ********************************************************************
\PassOptionsToPackage{ngerman,american}{babel} % change this to your language(s), main language last
% Spanish languages need extra options in order to work with this template
%\PassOptionsToPackage{spanish,es-lcroman}{babel}
\usepackage{babel}
\usepackage{capt-of}
\usepackage{csquotes}
\PassOptionsToPackage{%
%backend=biber,bibencoding=utf8, %instead of bibtex
backend=bibtex8,bibencoding=ascii,%
language=auto,%
style=numeric-comp,%
%style=authoryear-comp, % Author 1999, 2010
%bibstyle=authoryear,dashed=false, % dashed: substitute rep. author with ---
sorting=nyt, % name, year, title
maxbibnames=10, % default: 3, et al.
%backref=true,%
natbib=true % natbib compatibility mode (\citep and \citet still work)
}{biblatex}
\usepackage{biblatex}
\PassOptionsToPackage{fleqn}{amsmath} % math environments and more by the AMS
\usepackage{amsmath}
% ********************************************************************
% General useful packages
% ********************************************************************
\usepackage{graphicx,psfrag,epsfig,booktabs} %
\usepackage{scrhack} % fix warnings when using KOMA with listings package
\usepackage{xspace} % to get the spacing after macros right
\PassOptionsToPackage{printonlyused,smaller}{acronym}
\usepackage{acronym} % nice macros for handling all acronyms in the thesis
%\renewcommand{\bflabel}[1]{{#1}\hfill} % fix the list of acronyms --> no longer working
%\renewcommand*{\acsfont}[1]{\textsc{#1}}
%\renewcommand*{\aclabelfont}[1]{\acsfont{#1}}
%\def\bflabel#1{{#1\hfill}}
\def\bflabel#1{{\acsfont{#1}\hfill}}
\def\aclabelfont#1{\acsfont{#1}}
\usepackage[ruled]{algorithm2e}
\usepackage{algorithmic}
\usepackage{flexisym}
\usepackage{subcaption}
\usepackage{adjustbox}
%\usepackage{pgfplots} % External TikZ/PGF support (thanks to Andreas Nautsch)
%\usetikzlibrary{external}
%\tikzexternalize[mode=list and make, prefix=ext-tikz/]
% ****************************************************************************************************
% ****************************************************************************************************
% 4. Setup floats: tables, (sub)figures, and captions
% ****************************************************************************************************
\usepackage{tabularx} % better tables
\setlength{\extrarowheight}{3pt} % increase table row height
\newcommand{\tableheadline}[1]{\multicolumn{1}{l}{\spacedlowsmallcaps{#1}}}
\newcommand{\myfloatalign}{\centering} % to be used with each float for alignment
%\usepackage{subfig}
% ****************************************************************************************************
% ****************************************************************************************************
% 5. Setup code listings
% ****************************************************************************************************
\usepackage{listings}
%\lstset{emph={trueIndex,root},emphstyle=\color{BlueViolet}}%\underbar} % for special keywords
\lstset{language=[LaTeX]Tex,%C++,
morekeywords={PassOptionsToPackage,selectlanguage},
keywordstyle=\color{RoyalBlue},%\bfseries,
basicstyle=\small\ttfamily,
%identifierstyle=\color{NavyBlue},
commentstyle=\color{Green}\ttfamily,
stringstyle=\rmfamily,
numbers=none,%left,%
numberstyle=\scriptsize,%\tiny
stepnumber=5,
numbersep=8pt,
showstringspaces=false,
breaklines=true,
%frameround=ftff,
%frame=single,
belowcaptionskip=.75\baselineskip
%frame=L
}
% ****************************************************************************************************
% ****************************************************************************************************
% 6. Last calls before the bar closes
% ****************************************************************************************************
% ********************************************************************
% Her Majesty herself
% ********************************************************************
\usepackage{classicthesis}
% ********************************************************************
% Fine-tune hyperreferences (hyperref should be called last)
% ********************************************************************
\hypersetup{%
%draft, % hyperref's draft mode, for printing see below
colorlinks=true, linktocpage=true, pdfstartpage=3, pdfstartview=FitV,%
% uncomment the following line if you want to have black links (e.g., for printing)
%colorlinks=false, linktocpage=false, pdfstartpage=3, pdfstartview=FitV, pdfborder={0 0 0},%
breaklinks=true, pageanchor=true,%
pdfpagemode=UseNone, %
% pdfpagemode=UseOutlines,%
plainpages=false, bookmarksnumbered, bookmarksopen=true, bookmarksopenlevel=1,%
hypertexnames=true, pdfhighlight=/O,%nesting=true,%frenchlinks,%
urlcolor=CTurl, linkcolor=CTlink, citecolor=CTcitation, %pagecolor=RoyalBlue,%
%urlcolor=Black, linkcolor=Black, citecolor=Black, %pagecolor=Black,%
pdftitle={\myTitle},%
pdfauthor={\textcopyright\ \myName, \myUni, \myFaculty},%
pdfsubject={},%
pdfkeywords={},%
pdfcreator={pdfLaTeX},%
pdfproducer={LaTeX with hyperref and classicthesis}%
}
% ********************************************************************
% Setup autoreferences (hyperref and babel)
% ********************************************************************
% There are some issues regarding autorefnames
% https://texfaq.org/FAQ-latexwords
% you have to redefine the macros for the
% language you use, e.g., american, ngerman
% (as chosen when loading babel/AtBeginDocument)
% ********************************************************************
\makeatletter
\@ifpackageloaded{babel}%
{%
\addto\extrasamerican{%
\renewcommand*{\figureautorefname}{Figure}%
\renewcommand*{\tableautorefname}{Table}%
\renewcommand*{\partautorefname}{Part}%
\renewcommand*{\chapterautorefname}{Chapter}%
\renewcommand*{\sectionautorefname}{Section}%
\renewcommand*{\subsectionautorefname}{Section}%
\renewcommand*{\subsubsectionautorefname}{Section}%
}%
\addto\extrasngerman{%
\renewcommand*{\paragraphautorefname}{Absatz}%
\renewcommand*{\subparagraphautorefname}{Unterabsatz}%
\renewcommand*{\footnoteautorefname}{Fu\"snote}%
\renewcommand*{\FancyVerbLineautorefname}{Zeile}%
\renewcommand*{\theoremautorefname}{Theorem}%
\renewcommand*{\appendixautorefname}{Anhang}%
\renewcommand*{\equationautorefname}{Gleichung}%
\renewcommand*{\itemautorefname}{Punkt}%
}%
% Fix to getting autorefs for subfigures right (thanks to Belinda Vogt for changing the definition)
\providecommand{\subfigureautorefname}{\figureautorefname}%
}{\relax}
\makeatother
% ********************************************************************
% Development Stuff
% ********************************************************************
\listfiles
%\PassOptionsToPackage{l2tabu,orthodox,abort}{nag}
% \usepackage{nag}
%\PassOptionsToPackage{warning, all}{onlyamsmath}
% \usepackage{onlyamsmath}
% ****************************************************************************************************
% 7. Further adjustments (experimental)
% ****************************************************************************************************
% ********************************************************************
% Changing the text area
% ********************************************************************
%\areaset[current]{312pt}{761pt} % 686 (factor 2.2) + 33 head + 42 head \the\footskip
%\setlength{\marginparwidth}{7em}%
%\setlength{\marginparsep}{2em}%
% ********************************************************************
% Using different fonts
% ********************************************************************
%\usepackage[oldstylenums]{kpfonts} % oldstyle notextcomp
% \usepackage[osf]{libertine}
%\usepackage[light,condensed,math]{iwona}
%\renewcommand{\sfdefault}{iwona}
%\usepackage{lmodern} % <-- no osf support :-(
%\usepackage{cfr-lm} %
%\usepackage[urw-garamond]{mathdesign} <-- no osf support :-(
%\usepackage[default,osfigures]{opensans} % scale=0.95
%\usepackage[sfdefault]{FiraSans}
% \usepackage[opticals,mathlf]{MinionPro} % onlytext
% ********************************************************************
%\usepackage[largesc,osf]{newpxtext}
%\linespread{1.05} % a bit more for Palatino
% Used to fix these:
% https://bitbucket.org/amiede/classicthesis/issues/139/italics-in-pallatino-capitals-chapter
% https://bitbucket.org/amiede/classicthesis/issues/45/problema-testatine-su-classicthesis-style
% ********************************************************************
% ****************************************************************************************************
答案1
您的大型代码可以缩减为以下 MWE：
\documentclass{article}
\usepackage{flexisym}
\usepackage{classicthesis}
\begin{document}
text
\end{document}
该包显然与使用 编译时加载的包flexisym不兼容。mathpazoclassicthesispdflatex
您可以通过以下两种方式来解决这个问题：
删除
flexisym并编译pdflatex保留
flexisym并编译xelatex。