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<!DOCTYPE HTML PUBLIC "-//W3O//DTD W3 HTML 2.0//EN"><!-- This collection of hypertext pages is Copyright 1995-2005 by Steve Summit. --><!-- Content from the book "C Programming FAQs: Frequently Asked Questions" --><!-- (Addison-Wesley, 1995, ISBN 0-201-84519-9) is made available here by --><!-- permission of the author and the publisher as a service to the community. --><!-- It is intended to complement the use of the published text --><!-- and is protected by international copyright laws. --><!-- The on-line content may be accessed freely for personal use --><!-- but may not be published or retransmitted without explicit permission. --><!-- --><!-- this page built Sat Dec 24 21:47:46 2005 by faqproc version 2.7 --><!-- from source file libmisc.sgml dated Sat Feb 14 18:16:20 2004 --><!-- corresponding to FAQ list version 4.0 --><html><!-- Mirrored from c-faq.com/lib/bloat.html by HTTrack Website Copier/3.x [XR&CO'2008], Sat, 14 Mar 2009 07:59:00 GMT --><head><meta name=GENERATOR content="faqproc"><title>Question 13.27</title><link href="libsearch.html" rev=precedes><link href="endundef.html" rel=precedes><link href="index.html" rev=subdocument></head><body bgcolor="#ffffff"><a href="libsearch.html" rev=precedes><img src="../images/buttonleft.gif" alt="prev"></a><a href="index.html" rev=subdocument><img src="../images/buttonup.gif" alt="up"></a><a href="endundef.html" rel=precedes><img src="../images/buttonright.gif" alt="next"></a> <a href="../index-2.html"><img src="../images/buttontop.gif" alt="top/contents"></a><a href="../search.html"><img src="../images/buttonsrch.gif" alt="search"></a><hr><p><!-- qbegin --><h1>comp.lang.c FAQ list<font color=blue>·</font><!-- qtag -->Question 13.27</h1><p><font face=Helvetica size=8 color=blue><b>Q:</b></font>Why is my simple program,which hardly does more than print ``Hello, world!''in a window,compiling to such a huge executable(several hundred K)?Should I <TT>#include</TT> fewer header files?</p><p><hr><p><font face=Helvetica size=8 color=blue><b>A:</b></font>What you're seeing is the current(poor)state of the ``art'' in library design.As run-time libraries accrete more and more features(especiallyhaving to dowithGraphical User Interfaces),and when one library function calls another library function to do part of its job(which ought to be a Good Thing;that's what library functions are for),itcan happenthatcalling anything in the library(particularly something relatively powerful like <TT>printf</TT>)eventually pulls in practically everythingelse,leading to horribly bloated executables.</p><p>#including fewer header files probably won't help,because declaring a few functions which you don't call(which is mostly all that happens when you #include a header you don't need)shouldn't result in those functions being placed in your executable,unlessthey actually do get called.See also question <a href="extlibs.html">13.25</a>.</p><p>You may be able to track downand derailachainof unnecessarily-coupled functions which are bloating your executable,or maybe complain to your vendor to clean up the libraries.</p><p>References:H&S Sec. 4.8.6 pp. 103-4<br></p><!-- aend --><p><hr><a href="libsearch.html" rev=precedes><img src="../images/buttonleft.gif" alt="prev"></a><a href="index.html" rev=subdocument><img src="../images/buttonup.gif" alt="up"></a><a href="endundef.html" rel=precedes><img src="../images/buttonright.gif" alt="next"></a> <a href="../questions.html"><img src="../images/buttontop.gif" alt="contents"></a><a href="../search.html"><img src="../images/buttonsrch.gif" alt="search"></a><br><!-- lastfooter --><a href="../about.html">about this FAQ list</a> <a href="../eskimo.html">about eskimo</a> <a href="../search.html">search</a> <a href="../feedback.html">feedback</a> <a href="copyright.html">copyright</a><p>Hosted by<a href="http://www.eskimo.com/"><img src="../../www.eskimo.com/img/link/eskitiny.gif" alt="Eskimo North"></a></body><!-- Mirrored from c-faq.com/lib/bloat.html by HTTrack Website Copier/3.x [XR&CO'2008], Sat, 14 Mar 2009 07:59:00 GMT --></html>⌨️ 快捷键说明
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