1-2-用于编写configure.in的config语言简介.htm

本文档详细地讲解了linux内核配置所必用的configure.in和config的编写流程和语法。

<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">例如</span><span lang="EN-US">:</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; 
</span># drivers/char/Config.in</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; 
</span>int ''Maximum number of Unix98 PTYs in use (0-2048)'' \ 
CONFIG_UNIX98_PTY_COUNT 256</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><b><span lang="EN-US">l<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>string /prompt/ 
/symbol/ /word/<o:p>
</o:p>
</span></b></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">此命令向用户显示</span><span lang="EN-US">/prompt/</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;">提示信息</span><span lang="EN-US">,</span><span style="font-family:
宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;">接收用户输入值</span><span lang="EN-US">,</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">并赋给</span><span lang="EN-US">/symbol/</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;">。</span><span lang="EN-US"> /word/</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;">是默认值。</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">合法输入值</span><span lang="EN-US">: 
ASCII</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;">字符串</span><span lang="EN-US">(''&quot;'' and 
''\\''</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;">除外</span><span lang="EN-US">).</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">例如：</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; 
</span># drivers/sound/Config.in</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; 
</span>string ''<span style="mso-spacerun: yes">&nbsp; </span>Full pathname of 
DSPxxx.LD firmware file'' \ CONFIG_PSS_BOOT_FILE /etc/sound/dsp001.ld</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><b><span lang="EN-US">l<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>tristate /prompt/ 
/symbol/<o:p>
</o:p>
</span></b></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">此命令向用户显示</span><span lang="EN-US">/prompt/</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;">提示信息</span><span lang="EN-US">,</span><span style="font-family:
宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;">接收用户输入值</span><span lang="EN-US">,</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">并赋给</span><span lang="EN-US">/symbol/</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;">。</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">合法输入值：</span><span lang="EN-US">&quot;n&quot;, 
&quot;m&quot;, or &quot;y&quot;</span><span style="font-family:宋体;mso-ascii-font-family:
&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;">。</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&quot;m&quot;</span><span style="font-family:
宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;">代表</span><span lang="EN-US">&quot;module&quot;,</span><span style="font-family:宋体;mso-ascii-font-family:
&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;">它表示</span><span lang="EN-US">/symbol/</span><span style="font-family:宋体;mso-ascii-font-family:
&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;">应该被编译为内核</span><span lang="EN-US">module,</span><span style="font-family:宋体;mso-ascii-font-family:
&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;">仅当</span><span lang="EN-US">CONFIG_MODULES</span><span style="font-family:宋体;mso-ascii-font-family:
&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;">的当前值为</span><span lang="EN-US">Y</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">时</span><span lang="EN-US">,m</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;">值合法。</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">无默认值。</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">例如</span><span lang="EN-US">:</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; 
</span># fs/Config.in</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; 
</span>tristate ''NFS filesystem support'' CONFIG_NFS_FS</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><b><span lang="EN-US">l<span style="mso-spacerun:
yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>define_bool 
/symbol/ /word/<o:p>
</o:p>
</span></b></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">此命令把</span><span lang="EN-US">/word/</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;">的值赋给</span><span lang="EN-US">/symbol/</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;">。合法值为</span><span lang="EN-US">&quot;n&quot; 
</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;">或</span><span lang="EN-US">&quot;y&quot;</span><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:
&quot;Times New Roman&quot;">。</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span style="font-family:宋体;mso-ascii-font-family:&quot;Times New Roman&quot;;
mso-hansi-font-family:&quot;Times New Roman&quot;">例如</span><span lang="EN-US">:</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; 
</span># arch/alpha/config.in</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; 
</span>if [ &quot;$CONFIG_ALPHA_GENERIC&quot; = &quot;y&quot; ]</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US">&nbsp;<o:p>
</o:p>
</span></p>
<p class="MsoNormal" style="line-height: 150%; margin-top: 0; margin-bottom: 0"><span lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; 
</span>then define_bool CONFIG_PCI y</span></p>
<p class="MsoNormal" style="line-height: 150%;