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authorManuel Canales Esparcia <manuel@linuxfromscratch.org>2004-12-20 16:38:42 +0000
committerManuel Canales Esparcia <manuel@linuxfromscratch.org>2004-12-20 16:38:42 +0000
commit67906555169af493bc63114cfd1a38667dda09f5 (patch)
treeaf81b6abdaf8d7430d21ea6b94ed4ba13f1f1e02 /chapter05/adjusting.xml
parentfaf339809307b5793dbd1d5891e8270d26394037 (diff)
Removed text in chapter 05 - first round.
git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@4431 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
Diffstat (limited to 'chapter05/adjusting.xml')
-rw-r--r--chapter05/adjusting.xml81
1 files changed, 4 insertions, 77 deletions
diff --git a/chapter05/adjusting.xml b/chapter05/adjusting.xml
index f2a76ebe0..6d3aca31f 100644
--- a/chapter05/adjusting.xml
+++ b/chapter05/adjusting.xml
@@ -7,37 +7,12 @@
<title>Adjusting the toolchain</title>
<?dbhtml filename="adjusting.html"?>
-<para>Now that the temporary C libraries have been installed, all
-the tools compiled in the rest of this chapter should be linked against these
-libraries. In order to accomplish this, the linker and the compiler's
-specs file, need to be adjsted.</para>
-
-<para> Some people would say that there is <emphasis><quote>black magic juju
-below this line</quote></emphasis>, but it is really very simple.</para>
-
-<para>First, the linker, adjusted at the end of the first pass of Binutils, is
-installed by running the following command from within
+<para>Run the following command from within
the <filename class="directory">binutils-build</filename> directory:</para>
<screen><userinput>make -C ld install</userinput></screen>
-<para>From this point onwards everything will link <emphasis>only</emphasis>
-against the libraries in <filename class="directory">/tools/lib</filename>.</para>
-
-<note><para>If you missed the earlier warning to retain the Binutils
-source and build directories from the first pass, dont worry - all is not lost.
-Just ignore the above command. This results in a small chance of the subsequent
-testing programs linking against libraries on the host. This is not ideal, but
-it's not a major problem. The situation is corrected when the second pass of
-Binutils is installed later on.</para></note>
-
-<para>Now that the adjusted linker is installed, the Binutils build and source
-directories should be <emphasis>removed</emphasis>.</para>
-
-<para>The next task is to amend our GCC specs file so that it points
-to the new dynamic linker. A simple sed script will accomplish this:</para>
-
-<!-- Ampersands are needed to allow cut and paste -->
+<para>Amend the GCC specs file:</para>
<screen><userinput>SPECFILE=`gcc --print-file specs` &amp;&amp;
sed 's@ /lib/ld-linux.so.2@ /tools/lib/ld-linux.so.2@g' \
@@ -45,65 +20,17 @@ sed 's@ /lib/ld-linux.so.2@ /tools/lib/ld-linux.so.2@g' \
mv -f tempspecfile $SPECFILE &amp;&amp;
unset SPECFILE</userinput></screen>
-<para>It is recommended that the above command be cut-and-pasted in order to
-ensure correctness - Alternatively, the specs file can be edited by hand. This
-is done simply by replacing every occurrence of
-<quote>/lib/ld-linux.so.2</quote> with <quote>/tools/lib/ld-linux.so.2</quote>.
-</para>
-
-<para> Be sure to visually inspect the specs file in order to verify the intended changes have been made.</para>
-
-<important><para>If you are working on a platform where the name of the dynamic
-linker is something other than <filename>ld-linux.so.2</filename>, you
-<emphasis>must</emphasis> replace <filename>ld-linux.so.2</filename> with the
-name of your platform's dynamic linker in the above commands. Refer back to
-<xref linkend="ch-tools-toolchaintechnotes"/> if necessary.</para></important>
-
-<para>Lastly, there is a possibility that some include files from the host
-system have found their way into GCC's private include dir. This can happen
-as a result of of GCC's <quote>fixincludes</quote> process which runs as part
-of the GCC build. We'll explain more about this further on in this chapter.
-Run the following commands to eliminate this possibility:</para>
-
<screen><userinput>rm -f /tools/lib/gcc/*/*/include/{pthread.h,bits/sigthread.h}</userinput></screen>
-
-<caution><para>It is imperative at this point to stop and ensure that the basic
-functions (compiling and linking) of the new toolchain are working as expected.
-To perform a simple sanity check, run the following commands:</para>
-
<screen><userinput>echo 'main(){}' &gt; dummy.c
cc dummy.c
readelf -l a.out | grep ': /tools'</userinput></screen>
-<para>If everything is working correctly, there should be no errors, and the
-output of the last command will be of the form:</para>
-
-<blockquote><screen><computeroutput>[Requesting program interpreter: /tools/lib/ld-linux.so.2]</computeroutput></screen></blockquote>
-
-<para>Note especially that <filename class="directory">/tools/lib</filename>
-appears as the prefix of our dynamic linker.</para>
-
-<para>If the output is not
-as shown above, or there was no output at all, then something is seriously
-wrong. You will need to investigate and retrace your steps to find out where the
-problem is and correct it. There is no point in continuing until this is done.
-First, perform the sanity check again, using <command>gcc</command> instead of
-<command>cc</command>. If this works, then the
-<filename class="symlink">/tools/bin/cc</filename> symlink is missing. Revisit
-<xref linkend="ch-tools-gcc-pass1"/> and install the symlink. Second, ensure your PATH
-is correct. You can check this by running <userinput>echo $PATH</userinput> and
-verifying that <filename class="directory">/tools/bin</filename> is at the head
-of the list. If the PATH is wrong it could mean you're not logged in as user
-<emphasis>lfs</emphasis> or something went wrong back in
-<xref linkend="ch-tools-settingenviron"/>. Third, something may have gone wrong with
-the specs file amendment above. In this case redo the specs file amendment
-being careful to cut-and-paste the commands.</para>
+<para>The output of the last command will be of the form:</para>
-<para>Once you are satisfied that all is well, clean up the test files:</para>
+<screen><computeroutput>[Requesting program interpreter: /tools/lib/ld-linux.so.2]</computeroutput></screen>
<screen><userinput>rm dummy.c a.out</userinput></screen>
-</caution>
</sect1>