Author: dnicholson
Date: 2007-03-23 15:05:26 -0600 (Fri, 23 Mar 2007)
New Revision: 7972
Modified:
trunk/BOOK/chapter01/changelog.xml
trunk/BOOK/chapter06/gcc.xml
trunk/BOOK/chapter06/readjusting.xml
Log:
Readjust the gcc header search path to include /usr/include and test it
Modified: trunk/BOOK/chapter01/changelog.xml
===================================================================
--- trunk/BOOK/chapter01/changelog.xml 2007-03-23 20:26:13 UTC (rev 7971)
+++ trunk/BOOK/chapter01/changelog.xml 2007-03-23 21:05:26 UTC (rev 7972)
@@ -40,6 +40,12 @@
<para>2007-03-23</para>
<itemizedlist>
<listitem>
+ <para>[dnicholson] - When readjusting the GCC specs file, ensure
+ that GCC will search for the system headers in /usr/include. An
+ addition to the toolchain sanity checks has been made to test
+ this. This fix originates from DIY Linux.</para>
+ </listitem>
+ <listitem>
<para>[dnicholson] - Included the branch update patch for the
temporary Glibc in Chapter 5 to help minimize differences with the
final Glibc.</para>
Modified: trunk/BOOK/chapter06/gcc.xml
===================================================================
--- trunk/BOOK/chapter06/gcc.xml 2007-03-23 20:26:13 UTC (rev 7971)
+++ trunk/BOOK/chapter06/gcc.xml 2007-03-23 21:05:26 UTC (rev 7972)
@@ -161,19 +161,20 @@
href="readjusting.xml"
xpointer="xpointer(//[EMAIL PROTECTED]'g'])"/>
+<screen role="nodump"><userinput>grep -B2 '^ /usr/include'
dummy.log</userinput></screen>
+
<xi:include xmlns:xi="http://www.w3.org/2003/XInclude";
href="readjusting.xml"
xpointer="xpointer(//[EMAIL PROTECTED]'h'])"/>
+<screen><computeroutput>#include <...> search starts here:
+ /usr/lib/gcc/i686-pc-linux-gnu/&gcc-version;/include
+ /usr/include</computeroutput></screen>
+
<xi:include xmlns:xi="http://www.w3.org/2003/XInclude";
href="readjusting.xml"
xpointer="xpointer(//[EMAIL PROTECTED]'i'])"/>
-<screen><computeroutput>SEARCH_DIR("/usr/i686-pc-linux-gnu/lib")
-SEARCH_DIR("/usr/local/lib")
-SEARCH_DIR("/lib")
-SEARCH_DIR("/usr/lib");</computeroutput></screen>
-
<xi:include xmlns:xi="http://www.w3.org/2003/XInclude";
href="readjusting.xml"
xpointer="xpointer(//[EMAIL PROTECTED]'j'])"/>
@@ -182,6 +183,11 @@
href="readjusting.xml"
xpointer="xpointer(//[EMAIL PROTECTED]'k'])"/>
+<screen><computeroutput>SEARCH_DIR("/usr/i686-pc-linux-gnu/lib")
+SEARCH_DIR("/usr/local/lib")
+SEARCH_DIR("/lib")
+SEARCH_DIR("/usr/lib");</computeroutput></screen>
+
<xi:include xmlns:xi="http://www.w3.org/2003/XInclude";
href="readjusting.xml"
xpointer="xpointer(//[EMAIL PROTECTED]'l'])"/>
@@ -218,6 +224,14 @@
href="readjusting.xml"
xpointer="xpointer(//[EMAIL PROTECTED]'t'])"/>
+ <xi:include xmlns:xi="http://www.w3.org/2003/XInclude";
+ href="readjusting.xml"
+ xpointer="xpointer(//[EMAIL PROTECTED]'u'])"/>
+
+ <xi:include xmlns:xi="http://www.w3.org/2003/XInclude";
+ href="readjusting.xml"
+ xpointer="xpointer(//[EMAIL PROTECTED]'v'])"/>
+
</sect2>
<sect2 id="contents-gcc" role="content">
Modified: trunk/BOOK/chapter06/readjusting.xml
===================================================================
--- trunk/BOOK/chapter06/readjusting.xml 2007-03-23 20:26:13 UTC (rev
7971)
+++ trunk/BOOK/chapter06/readjusting.xml 2007-03-23 21:05:26 UTC (rev
7972)
@@ -44,9 +44,10 @@
linkend="ch-tools-toolchaintechnotes" role=","/> if necessary.</para>
</important>
-<screen><userinput>gcc -dumpspecs | \
-perl -p -e 's@/tools/lib/ld-linux.so.2@/lib/[EMAIL PROTECTED];' \
- -e '[EMAIL PROTECTED]:[EMAIL PROTECTED]/usr/lib/ @g;' > \
+<screen><userinput>gcc -dumpspecs | sed \
+ -e 's@/tools/lib/ld-linux.so.2@/lib/[EMAIL PROTECTED]' \
+ -e '/\*startfile_prefix_spec:/{n;[EMAIL PROTECTED]@/usr/lib/ @}' \
+ -e '/\*cpp:/{n;[EMAIL PROTECTED]@ -isystem /usr/[EMAIL PROTECTED]' > \
`dirname $(gcc --print-libgcc-file-name)`/specs</userinput></screen>
<para>It is a good idea to visually inspect the specs file to verify the
@@ -57,7 +58,7 @@
as expected. To do this, perform the following sanity checks:</para>
<screen role="nodump" os="a"><userinput>echo 'main(){}' > dummy.c
-cc dummy.c -Wl,--verbose &> dummy.log
+cc dummy.c -v -Wl,--verbose &> dummy.log
readelf -l a.out | grep ': /lib'</userinput></screen>
<para os="b">If everything is working correctly, there should be no errors,
@@ -80,44 +81,54 @@
/usr/lib/crti.o succeeded
/usr/lib/crtn.o succeeded</computeroutput></screen>
- <para os="g">Next, verify that the new linker is being used with the correct
search paths:</para>
+ <para os="g">Verify that the compiler is searching for the correct header
+ files:</para>
-<screen role="nodump" os="h"><userinput>grep 'SEARCH.*/usr/lib' dummy.log |sed
's|; |\n|g'</userinput></screen>
+<screen role="nodump"><userinput>grep -B1 '^ /usr/include'
dummy.log</userinput></screen>
- <para os="i">If everything is working correctly, there should be no errors,
+ <para os="h">This command should return successfully with the following
output:</para>
+
+<screen><computeroutput>#include <...> search starts here:
+ /usr/include</computeroutput></screen>
+
+ <para os="i">Next, verify that the new linker is being used with the correct
search paths:</para>
+
+<screen role="nodump" os="j"><userinput>grep 'SEARCH.*/usr/lib' dummy.log |sed
's|; |\n|g'</userinput></screen>
+
+ <para os="k">If everything is working correctly, there should be no errors,
and the output of the last command will be:</para>
<screen><computeroutput>SEARCH_DIR("/tools/i686-pc-linux-gnu/lib")
SEARCH_DIR("/usr/lib")
SEARCH_DIR("/lib");</computeroutput></screen>
- <para os="j">Next make sure that we're using the correct libc:</para>
+ <para os="l">Next make sure that we're using the correct libc:</para>
-<screen role="nodump" os="k"><userinput>grep "/lib/libc.so.6 "
dummy.log</userinput></screen>
+<screen role="nodump" os="m"><userinput>grep "/lib/libc.so.6 "
dummy.log</userinput></screen>
- <para os="l">If everything is working correctly, there should be no errors,
+ <para os="n">If everything is working correctly, there should be no errors,
and the output of the last command will be:</para>
-<screen os="m"><computeroutput>attempt to open /lib/libc.so.6
succeeded</computeroutput></screen>
+<screen os="o"><computeroutput>attempt to open /lib/libc.so.6
succeeded</computeroutput></screen>
- <para os="n">Lastly, make sure GCC is using the correct dynamic
linker:</para>
+ <para os="p">Lastly, make sure GCC is using the correct dynamic
linker:</para>
-<screen role="nodump" os="o"><userinput>grep found
dummy.log</userinput></screen>
+<screen role="nodump" os="q"><userinput>grep found
dummy.log</userinput></screen>
- <para os="p">If everything is working correctly, there should be no errors,
+ <para os="r">If everything is working correctly, there should be no errors,
and the output of the last command will be (allowing for
platform-specific differences in dynamic linker name):</para>
-<screen os="q"><computeroutput>found ld-linux.so.2 at
/lib/ld-linux.so.2</computeroutput></screen>
+<screen os="s"><computeroutput>found ld-linux.so.2 at
/lib/ld-linux.so.2</computeroutput></screen>
- <para os="r">If the output does not appear as shown above or is not received
+ <para os="t">If the output does not appear as shown above or is not received
at all, then something is seriously wrong. Investigate and retrace the
steps to find out where the problem is and correct it. The most likely
reason is that something went wrong with the specs file adjustment. Any
issues will need to be resolved before continuing on with the process.</para>
- <para os="s">Once everything is working correctly, clean up the test
files:</para>
+ <para os="u">Once everything is working correctly, clean up the test
files:</para>
-<screen role="nodump" os="t"><userinput>rm -v dummy.c a.out
dummy.log</userinput></screen>
+<screen role="nodump" os="v"><userinput>rm -v dummy.c a.out
dummy.log</userinput></screen>
</sect1>
--
http://linuxfromscratch.org/mailman/listinfo/lfs-book
FAQ: http://www.linuxfromscratch.org/lfs/faq.html
Unsubscribe: See the above information page
