Changeset 426c3a4 for chapter07/iproute2.xml

Timestamp:

02/20/2024 10:26:00 AM (7 months ago)

Author:

Xi Ruoyao <xry111@…>

Branches:

xry111/clfs-ng

Children:

f286505

Parents:

83b0abd

git-author:

Xi Ruoyao <xry111@…> (02/20/2024 10:25:27 AM)

git-committer:

Xi Ruoyao <xry111@…> (02/20/2024 10:26:00 AM)

Message:

cross-ng: Simplify the command to build ip from IPRoute2 in chapter 7

I had some incorrect understanding about overriding make variables, thus
a sed is used unnecessarily.

File:

• chapter07/iproute2.xml (modified) (2 diffs)

chapter07/iproute2.xml

@@ -45 +45 @@
     <title>Use IPRoute2 to Set Up Loopback Network Interface</title>
 
-    <para>IPRoute2 package has several dependencies not installed yet, but
-    we only need <command>ip</command> utility from the package now.
-    Disable the build of other utilities:</para>
-
-<screen><userinput remap="pre">sed '/SUBDIRS/s/=.*/=lib ip/' -i Makefile</userinput></screen>
-
     <para>Compile the package:</para>
 
-<screen><userinput remap="make">PKG_CONFIG=false make</userinput></screen>
+<screen><userinput remap="make">PKG_CONFIG=false make SUBDIRS='lib ip'</userinput></screen>
 
     <variablelist>
-      <title>The meaning of the environment variable:</title>
+      <title>The meaning of the environment and overriden make
+      variables:</title>
 
       <varlistentry>
@@ -65 +60 @@
           We can override it since <command>ip</command> utility does not
           need these dependencies.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><parameter>SUBDIRS='lib ip'</parameter></term>
+        <listitem>
+          <para>Only build the <command>ip</command> utility from the
+          package and disable the build of other utilities.  This is needed
+          to prevent a build failure due to the lack of some
+          dependencies.</para>
         </listitem>
       </varlistentry>