Changeset 73d91ac for chapter07

Timestamp:

12/05/2023 05:12:55 AM (7 months ago)

Author:

Xi Ruoyao <xry111@…>

Branches:

xry111/arm64

Children:

00de269

Parents:

6b6a1b9 (diff), dc8572f (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge remote-tracking branch 'origin/trunk' into xry111/arm64

Location:

chapter07

Files:

• chroot.xml (modified) (2 diffs)
• createfiles.xml (modified) (1 diff)
• kernfs.xml (modified) (1 diff)
• perl.xml (modified) (2 diffs)

chapter07/chroot.xml

@@ -24 +24 @@
     PS1='(lfs chroot) \u:\w\$ ' \
     PATH=/usr/bin:/usr/sbin     \
+    MAKEFLAGS="-j<replaceable>$(nproc)</replaceable>"      \
+    TESTSUITEFLAGS="-j<replaceable>$(nproc)</replaceable>" \
     /bin/bash --login</userinput></screen>
+
+  <para>
+    If you don't want to use all available logical cores, replace
+    <replaceable>$(nproc)</replaceable> with the number of logical cores you
+    want to use for building packages in this chapter and the following
+    chapters.  The test suites of some packages (notably Autoconf, Libtool,
+    and Tar) in &ch-final; are not affected by <envar>MAKEFLAGS</envar>, they
+    use a <envar>TESTSUITEFLAGS</envar> environment variable instead. We
+    set that here as well for running these test suites with multiple cores.
+  </para>
 
   <para>The <parameter>-i</parameter> option given to the <command>env</command>
@@ -48 +60 @@
   used.</para>
 
-  <para>Note that the <command>bash</command> prompt will say
+  <para>Also note that the <command>bash</command> prompt will say
   <computeroutput>I have no name!</computeroutput> This is normal because the
   <filename>/etc/passwd</filename> file has not been created yet.</para>

chapter07/createfiles.xml

@@ -216 +216 @@
   the bad login attempts.</para>
 
-  <note><para>The <filename>/run/utmp</filename> file records the users that
-  are currently logged in.  This file is created dynamically in the boot
-  scripts.</para></note>
+  <!-- systemd no longer creates this -->
+  <note revision='sysv'><para>The <filename>/run/utmp</filename> file
+  records the users that are currently logged in.  This file is created
+  dynamically in the boot scripts.</para></note>
+
+  <!-- AFAIK they are not vital for system function, users requiring such
+       info should rely on systemd-logind or elogind or some custom PAM
+       module.  Maybe we can stop to create them at all.  -->
+  <note>
+    <para>
+      The <phrase revision='sysv'><filename>utmp</filename>,
+      </phrase><filename>wtmp</filename>, <filename>btmp</filename>, and
+      <filename>lastlog</filename> files use 32-bit integers for timestamps
+      and they'll be fundamentally broken after year 2038.  Many packages
+      have stopped using them and other packages are going to stop using
+      them.  It is probably best to consider them deprecated.
+    </para>
+  </note>
 
 </sect1>

chapter07/kernfs.xml

@@ -108 +108 @@
 
 <screen><userinput>if [ -h $LFS/dev/shm ]; then
-  mkdir -pv $LFS/$(readlink $LFS/dev/shm)
+  (cd $LFS/dev; mkdir $(readlink shm))
 else
-  mount -t tmpfs -o nosuid,nodev tmpfs $LFS/dev/shm
+  mount -vt tmpfs -o nosuid,nodev tmpfs $LFS/dev/shm
 fi</userinput></screen>
 

chapter07/perl.xml

@@ -58 +58 @@
 
     <variablelist>
-      <title>The meaning of the new Configure options:</title>
+      <title>The meaning of the Configure options:</title>
+
       <varlistentry>
         <term><parameter>-des</parameter></term>
@@ -65 +66 @@
           all items; -e ensures completion of all tasks; -s silences
           non-essential output.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><parameter>-Dvendorprefix=/usr</parameter></term>
+        <listitem>
+          <para>This ensures <command>perl</command> knows how to
+          tell packages where they should install their Perl modules.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><parameter>-Duseshrplib</parameter></term>
+        <listitem>
+          <para>Build <systemitem class='library'>libperl</systemitem>
+          needed by some Perl modules as a shared library, instead of
+          a static library.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><parameter>-Dprivlib,-Darchlib,-Dsitelib,...</parameter></term>
+        <listitem>
+          <para>These settings define where Perl looks for installed
+          modules. The LFS editors chose to put them in a directory structure
+          based on the MAJOR.MINOR version of Perl (&perl-version-min;) which
+          allows upgrading Perl to newer patch levels (the patch level is
+          the last dot separated part in the full version string like
+          &perl-version;) without reinstalling all of the modules.</para>
         </listitem>
       </varlistentry>