Changeset b8b65b7 for chapter06/libffi.xml

Timestamp:

07/07/2018 05:48:11 PM (6 years ago)

Author:

Bruce Dubbs <bdubbs@…>

Branches:

10.0, 10.0-rc1, 10.1, 10.1-rc1, 11.0, 11.0-rc1, 11.0-rc2, 11.0-rc3, 11.1, 11.1-rc1, 11.2, 11.2-rc1, 11.3, 11.3-rc1, 12.0, 12.0-rc1, 12.1, 12.1-rc1, 8.3, 8.4, 9.0, 9.1, arm, bdubbs/gcc13, ml-11.0, multilib, renodr/libudev-from-systemd, s6-init, trunk, xry111/arm64, xry111/arm64-12.0, xry111/clfs-ng, xry111/lfs-next, xry111/loongarch, xry111/loongarch-12.0, xry111/loongarch-12.1, xry111/mips64el, xry111/pip3, xry111/rust-wip-20221008, xry111/update-glibc

Children:

d47b15b

Parents:

e6035d6

Message:

Add a configuration option to libffi to ensure proper
architecture selection. Include an explanation
and how to select alternative options.

git-svn-id: ​http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11435 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

File:

• chapter06/libffi.xml (modified) (1 diff)

chapter06/libffi.xml

@@ -56 +56 @@
     <para>Prepare libffi for compilation:</para>
 
-<screen><userinput remap="configure">./configure --prefix=/usr --disable-static</userinput></screen>
+<screen><userinput remap="configure">./configure --prefix=/usr --disable-static --with-gcc-arch=native</userinput></screen>
+
+    <variablelist>
+      <title>The meaning of the configure option:</title>
+
+      <varlistentry>
+        <term><parameter>--with-gcc-arch=native</parameter></term>
+        <listitem>
+          <para>Ensure gcc optimizes for the current system.  If this
+          is not specified, the system is guessed and the code generated
+          may not be correct for some systems.  If the generated code
+          will be copied from the native system to a less capable 
+          system, use the less capable system as a parameter. For details 
+          about alternative system types, see <ulink 
+          url='https://gcc.gnu.org/onlinedocs/gcc-8.1.0/gcc/x86-Options.html'>
+          the x86 options in the gcc manual</ulink>.</para>
+        </listitem>
+      </varlistentry>
+
+    </variablelist>
 
     <para>Compile the package:</para>