chapter06: Translate ninja instruction

chapter06/ninja.xml

@@ -23,7 +23,7 @@
   <sect2 role="package">
     <title/>
 
-    <para>Ninja is a small build system with a focus on speed.</para>
+    <para>Ninja 是一个注重速度的小型构建系统。</para>
 
     <segmentedlist>
       <segtitle>&buildtime;</segtitle>
@@ -38,43 +38,54 @@
   </sect2>
 
   <sect2 role="installation">
-    <title>安装Ninja</title>
+    <title>安装 Ninja</title>
 
-    <para>When run, ninja normally runs a maximum number of processes
+    <!--para>When run, ninja normally runs a maximum number of processes
     in parallel.  By default this is the number of cores on the system 
     plus two.  In some cases this can overheat a CPU or run a system out
     of memory.  If run from the command line, passing a -jN parameter
     will limit the number of parallel processes, but some packages
-    embed the execution of ninja and do not pass a -j parameter.</para>
-
-    <para>Using the <emphasis>optional</emphasis> patch below allows a user to
+    embed the execution of ninja and do not pass a -j parameter.</para-->
+    <para>在运行时， ninja 一般尽量并行运行更多进程，
+		默认情况下最大进程数是系统 CPI 核心数加 2 得到的值。
+		某些情况下，这样会导致 CPU 过热，或者耗尽系统内存。
+		如果使用命令行执行 ninja，可以传递 -jN 参数以限制并行进程数，
+		但某些软件包内嵌了 ninja 的执行过程，且并不传递 -j 参数。</para>
+
+    <!--para>Using the <emphasis>optional</emphasis> patch below allows a user to
     limit the number of parallel processes via an environment variable, 
-    NINJAJOBS.  <command>For example</command> setting:
+	NINJAJOBS.  <command>For example</command> setting: -->
+
+	<para>使用下面这个 <emphasis>可选的</emphasis> 补丁，
+		用户即可通过一个环境变量 NINJAJOBS 限制并行进程数量。
+		<command>例如</command> 设置：
 
      <!-- Using <command> here to make the output bold.  We really don't want
      users setting this now and experience shows that many users blindly
      copy/paste anything in a box. -->
+	 <!-- 这里的 <command> 标记用于加粗。我们确实不希望用户现在就设置
+		 该变量，过去的经验表明许多用户盲目地复制粘贴矩形框中的所有内容。
+		 译注：这可能是全书唯一一个被翻译的注释。-->
 
     <screen>export NINJAJOBS=4</screen>
 
-    will limit ninja to four parallel processes.</para>
+    会限制 ninja 使用 4 个并行进程。</para>
 
-    <para>If desired, install the patch by running:</para>
+    <para>如果希望使用这个补丁，执行下列命令应用它：</para>
 
 <screen><userinput remap="pre">patch -Np1 -i ../ninja-1.8.2-add_NINJAJOBS_var-1.patch</userinput></screen>
 
-    <para>Build Ninja with:</para>
+    <para>构建 Ninja：</para>
 
 <screen><userinput remap="configure">python3 configure.py --bootstrap</userinput></screen>
 
     <variablelist>
-      <title>The meaning of the build option:</title>
+      <title>构建选项的含义：</title>
 
       <varlistentry>
         <term><parameter>--bootstrap</parameter></term>
         <listitem>
-          <para>This parameter forces ninja to rebuild itself for the current
-          system.</para>
+          <para>这个参数强制 ninja 为当前系统重新构建自身。</para>
         </listitem>
       </varlistentry>
 
@@ -112,7 +123,7 @@ install -vDm644 misc/zsh-completion  /usr/share/zsh/site-functions/_ninja</useri
       <varlistentry id="ninja">
         <term><command>ninja</command></term>
         <listitem>
-          <para>is the Ninja build system.</para>
+          <para>是 ninja 构建系统</para>
           <indexterm zone="ch-system-ninja ninja">
             <primary sortas="b-ninja">ninja</primary>
           </indexterm>