Author: jhuntwork
Date: 2007-08-31 21:11:54 -0600 (Fri, 31 Aug 2007)
New Revision: 8364
Modified:
branches/jh/BOOK/chapter01/changelog.xml
branches/jh/BOOK/chapter05/binutils-pass1.xml
Log:
Update the explanatory text for the use of '-m64'
Modified: branches/jh/BOOK/chapter01/changelog.xml
===================================================================
--- branches/jh/BOOK/chapter01/changelog.xml 2007-09-01 02:34:39 UTC (rev
8363)
+++ branches/jh/BOOK/chapter01/changelog.xml 2007-09-01 03:11:54 UTC (rev
8364)
@@ -40,6 +40,9 @@
<para>2007-08-31</para>
<itemizedlist>
<listitem>
+ <para>[jhuntwork] - Update explanatory text for the use of
-m64.</para>
+ </listitem>
+ <listitem>
<para>[jhuntwork] - Update explanatory text for GCC's --with-arch
parameter.</para>
</listitem>
<listitem>
Modified: branches/jh/BOOK/chapter05/binutils-pass1.xml
===================================================================
--- branches/jh/BOOK/chapter05/binutils-pass1.xml 2007-09-01 02:34:39 UTC
(rev 8363)
+++ branches/jh/BOOK/chapter05/binutils-pass1.xml 2007-09-01 03:11:54 UTC
(rev 8364)
@@ -57,9 +57,8 @@
&& make install; }</userinput>.</para>
</note>
- <para>Test to see if the host is a multilib capable machine and set a
variable
- if it is. This ensures that only 64-bit binaries are built if using such a
host.
- </para>
+ <para>Test to see if the host is a 64-bit capable machine and set a
variable
+ if it is.</para>
<screen><userinput>test $(uname -m | grep 64) &&
M64="-m64"</userinput></screen>
@@ -73,13 +72,23 @@
<title>The meaning of the configure options:</title>
<varlistentry>
- <term><envar>CC="gcc -B/usr/bin/"</envar></term>
+ <term><envar>CC="gcc -B/usr/bin/ $M64"</envar></term>
<listitem>
<para>This forces <command>gcc</command> to prefer the linker from
the host in <filename class="directory">/usr/bin</filename>. This
is necessary on some hosts where the new <command>ld</command>
built here is not compatible with the host's <command>gcc</command>.
</para>
+ <para>Also, if the cpu-type is 64-bit capable, the variable
<envar>$M64</envar>
+ will contain the parameter <parameter>-m64</parameter>. Otherwise, the
+ variable is empty. The parameter forces <command>gcc</command> to
build
+ 64-bit binaries. Using that parameter here and for the next package
+ ensures creation of a linker, assembler and compiler that will in turn
+ create only 64-bit binaries. This is necessary since currently this
book
+ does not support the creation of multilib systems, i.e., those with
both
+ 32-bit and 64-bit libraries. This will only make a difference on
hosts that
+ are themselves multilib and employ a compiler that creates 32-bit
binaries
+ by default.</para>
</listitem>
</varlistentry>
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